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I know it looks like we have fun on this show, but we spend weeks and sometimes months planning how to do our myths safely.

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So please, don't try this at home.

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On this episode of Mythbusters, there's real genius.

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Today's more cast, 70% chance of sizes.

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Lots of laughs.

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And a whole heap of explosions.

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Like a wet t-shirt contest, really.

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First, Adam and Janey take on a classic urban myth.

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This looks awful.

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With the top down, can you stay dry by putting the pedal to the metal?

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Whoa, look at that!

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Then Carrie Grant and Tori have a two-part popcorn parable.

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Oh, the heaven!

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First, they're asking can you cook corn with explosions?

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And then, lasers.

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Am I missing an eyebrow?

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Who are the Mythbusters?

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Adam Savage.

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Am I missing an eyebrow?

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And Jamie Heinemann.

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I usually don't want people to do that.

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Between the more than 30 years of special effects experience, joining them, Carrie Byron.

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That was a rush!

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Grant Imahara.

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Not at all, by ahhh!

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They don't just tell the myths.

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They put them to the test.

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So what's up with the umbrellas?

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I'm planning to use them to paint a metaphorical picture.

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I want you to imagine that you are having a mid-life crisis

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and you run out and spend a bunch of your dough on a really nice convertible sports car.

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Okay.

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Now, further imagine that you're driving it down the street and it starts to rain.

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What do you do?

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I pull over and you put the top up.

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Ha ha!

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That's where the fansite myth states that you might be wrong.

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That instead of wasting your time putting the top up, that you should floor it go as fast as you can

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because there is a speed at which you can drive that no rain will enter the driver's compartment.

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Sounds kind of unsafe to me.

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Sounds really fun to test to me.

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Aerodynamics.

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Dangerous wet weather driving.

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And a classic urban myth.

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This is It's Buster Country.

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Because viewers want to know if you've got the top down when it starts raining,

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we'll putting your foot down keep you dry.

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So does this mean we get a drive a fancy car really fast in the rain?

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We do, but we are in sunny California and that presents a little bit of a problem.

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I think just as we did in running in the rain, we're going to have to have a bit of a problem.

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We're going to have to manufacture our own rain here.

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It's a bit of a chore, but I think we can handle that.

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We still get a drive a really fancy car fast in the rain though, right?

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Yes, but slow down there, Cowboy.

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I think perhaps we ought to take this model car and run some shop tests.

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Sprinkle some water at it, look at it on high speed, see if there's anything at all to this myth.

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And then we get a drive a really fancy car fast in the rain.

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Okay, look, we'll get some driving lessons.

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We'll wet down some tarmac, we'll go out next thing and drive a fancy car, alright?

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Alright.

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Keep rev head Heinemann happy, they shelve the shop tests in favor of...

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Well, the first thing on our agenda is to get some training in foul weather driving on wet roads.

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And in lovely sunny California, there's nothing better for that than a perfect sunny day.

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But being the boys' scouts that they are, they came prepared to make their own.

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This is fun.

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That's the bad weather, so all we need now is a convertible car.

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You've seen Mythbusters before.

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You know that generally when we have cars, they explode.

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But not that one, I don't think.

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Guiding the guys through their wet weather driving instruction is Brian Fraser.

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Brian's the guy that trains anybody that drives an emergency vehicle how to do it right.

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That means police, fire, ambulances, Brian's the guy.

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There's that old man's steering, there you go, you let a little bit of the steering out to help catch.

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If I had a car like that, I wouldn't be letting Adam drive it.

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Harsh, but given Adam's track record and current overcaffeinated mood, fair.

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I might have gotten the microphone wet there for a second.

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Despite Adam's best efforts, the microphone still works and they get down to business.

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Well, the surface is now wet.

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We're going to lose that cohesion between the tires and the concrete surface.

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We're on a concrete pad out here today.

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Hydroplaning can also be a factor if we've got standing water.

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Ways to deal with this is to get off the gas, slow our speed down.

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It's going to multiply any reaction we do so you want to not be jerky in your steering movements.

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So just smoothen out your steering and backing off speed and keep you in control of the car.

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The clearest difference between driving on the wet ground versus the dry ground is that it's a lot slimmerier.

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And that's the key.

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By simply getting grips with the car on a wet surface, they can be sure they won't lose their heads at high speeds on the real test.

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Which means they're licensed for wet weather science.

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I keep losing my hat.

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Now in part one of popcorn pandemonium, is it possible to pop popcorn with an explosion?

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Going to the movie theater is one of my favorite things to do, but what does it have to do with the men?

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Well the fans love popcorn as much as I do and they've sent in a ton of myths about popcorn.

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Yeah like what?

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Pop popcorn with explosives.

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How's that supposed to work?

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Explosions generate a lot of heat and the fans think that is just enough to pop popcorn.

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Cool!

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It's delicious.

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It's a tasty light.

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Popcorn and its distinctive explosive expansion is a ready made recipe for myth and disaster.

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And the fans want to know, can you put the pop in popcorn with a bang?

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Okay so popcorn with explosives, how are we going to test this?

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Well this myth comes in a whole variety of forms.

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Everything from a torpedo hitting a container ship full of popcorn to an industrial accident at a popcorn popping plant.

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Whoa, what are we going to do?

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I think we should take our favorite explosions from our favorite myths, apply them to popcorn.

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This is going to be fun.

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Oh this is the part where she dies.

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Despite the various outlandish sources for this fan request, the basic premise for each is the same.

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Heat and pressure from an explosion causes raw popcorn kernels to cook in an instant.

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To test this one central theory, the team is taking two classic blasts from the past.

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And reigniting them at the bomb range.

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And first up...

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Now we do have a myth from James Bond that is the exploding propane tank.

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This doesn't pop the popcorn, I don't know what we're...

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Strap some C4 onto a propane tank, put some popcorn kernels on top and see if we get this rain-cooked popcorn.

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Now we know that heat is what causes popcorn kernels to pop into popcorn, I mean you could do it on your stove.

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And I think it's fairly likely that the size of fireball that we'll get will generate the sufficient amount of heat to make something pop.

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So will the explosive C4 and propane cocktail cook the corn?

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Or will it simply be shaken, stirred and sprayed shrapnel-like all over the bomb range?

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Alright, here we go. In three, two, one...

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That was some heat, you think we pop popcorn?

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I don't know.

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That's the burning question.

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But up at the corn carnage epicenter, the signs aren't good.

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I see a lot of unpopped kernels on the ground.

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No popcorn.

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Nothing?

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Nope.

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There's more foil over here.

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It seems the force of the C4 explosion and the rapidly expanding propane fireball distributed the raw kernels far and wide, without actually cooking and popping any of them.

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My propane popcorn empire! Why?

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I don't think there's quite enough heat and it wasn't sustained for long enough for the popcorn to actually pop.

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I think we just kind of blew it out everywhere.

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Coming up...

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It's like a wet t-shirt contest, really.

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Jamie and Adam use an unconventional rain-measuring method.

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In three!

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And have Carrie Grant and Tori crack the kettle corn making market.

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Look at all the burning kernels!

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It's a popular fansite fable.

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Can you keep the rain out of your convertible by putting the pedal to the metal?

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After taking their luxury soft top for a wet weather test spin, Adam and Jamie are back at the Batcave for preliminary shop tests.

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So this is our scale testing rig for driving in the rain.

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And since it's about two things, wind and rain, we're creating both of those in a small scale.

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I've got a leaf blower here creating the wind over the car.

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I've got Jamie perched up there in the scissor lip.

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He's going to be the rain.

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He's got a pressurized bottle of some blue dye so that we can actually see the rain drop.

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Oh, that's nice.

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Hopefully, if there's any validity to this myth that the rain somehow by the aerodynamics of the car going fast won't get in the driver's compartment.

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Are you ready?

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I'm ready.

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I would expect to see these blue raindrops coming down and the wind coming up the car inhibiting them from continuing their journey onto the passengers in the convertible.

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To simulate driving through the rain, they've got a 50-mile-an-hour wind.

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Alright, go for it.

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Oh, yeah.

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Ha ha ha ha ha ha.

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Followed by a small-scale hurricane with many wind speeds of 30 miles-an-hour.

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I almost feel like I'm driving it.

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After which Adam is confident this myth holds water.

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I'm thinking that our scale tests are actually proving pretty fruitful.

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There may be something to this.

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We run three tests and they're showing me what I would expect to see if this myth were actually true.

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I.E., we've run it with no wind and some rain, a slow speed wind, 15 miles per hour and a high speed wind, 30 miles per hour.

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And I'm seeing what looks like a bubble forming over the driver's compartment with less rain seems to want to get into.

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Yeah, it does show the rain kind of zipping over the cockpit, but I'm not that sure that the wind and the rain scale that well.

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We're going to have to do it full size.

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Ha ha ha.

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I knew you were going to go there.

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Lied before said dangerous wet weather driving, Adam has a couple of issues.

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The first problem with this, as I see it, is that this was loaned to us by a friend and a fan of the show.

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And it's worth over $100,000 and we're myth busters.

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There's an inherent danger factor just in letting us near something of this value.

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The second problem is that we've got to figure out a way at some fairly extreme speeds to be able to know whether water has gotten into the driver's compartment.

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We need to have a rain detector for inside the car.

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But because the amounts that we're dealing with are really quite small, it's not like we can put a funnel in a collector or electronic instrument or something in there.

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I figured that if we put something that would, by virtue of getting wet, show a dot, that that would do the trick.

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And so I thought of tissue paper because when it's opaque, you can't really see anything through the other side of it.

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But when it gets wet, like so, all of a sudden you've got a very clear indication that there's a drop of water that hit.

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It's like a wet t-shirt contest, really.

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It shows you what's underneath, don't it?

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The expansion of gases typical of an explosion is simply distributing the kernels over the bomb range without cooking them.

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But our Intravitrio have yet to light the fuse on their final conflagration.

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Of all the fireballs that I've seen from explosions that we've done, Creamer Cannon has given us the most slow fireball.

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It goes into the air and then...

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Oh!

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And we're going to have the popcorn kind of mixed in with the Creamer.

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Yeah!

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That's a recipe for disaster.

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Hopefully Kettle Corn.

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So maybe the sticky Creamer will stick to the popcorn, creating that heat for long enough that we'll get Kettle Corn.

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I'm ever the optimist. I think that this actually has a chance of work.

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Alright, you guys want to run?

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I do!

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What happens is you launch the cannon, the Creamer, and the corn goes up in the air.

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The corn's surrounded by fire. Somehow it's going to make us Kettle Corn.

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We're at to go.

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In three, two, one!

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Wow!

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You know what I saw? A bunch of burning.

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Something!

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Look at all the burning kernels!

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I think they're burning up there!

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Let's see if we got the popcorn!

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The fine grained Creamer once again proves extremely flammable,

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leading to a satisfying fireball.

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And there appears to be flaming food falling to the ground.

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We've got popcorn!

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It's a little burnt!

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It's corn flambé!

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It's burnt, but look!

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No, that's just burnt Creamer.

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That's not popcorn?

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No, I don't know.

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No, but it's not raining down!

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Unfortunately, it was just little bits of Creamer,

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but there was such hope there for a minute.

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I thought we actually did it.

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My Kettle Corn Empire!

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I'm wrong again!

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So with the myth looking pretty much busted,

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it's back to the shop where Carrie meets a popcorn professor.

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Now, we've been trying to pop popcorn with explosives,

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and I'm wondering if we just don't have enough heat generated.

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Why do you think that it's not working for us?

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Popcorn pops best at 450 degrees Fahrenheit.

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When the popcorn is exposed to that heat,

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the moisture inside the kernels expand and expand,

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like your grandmother's old-fashioned pressure cooker,

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until finally there's enough pressure to break open the kernel,

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and what you're eating is the starch that has been condensed inside.

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That's the key.

234
00:15:44,000 --> 00:15:48,000
A popcorn kernel is basically a pressure vessel made up of three layers.

235
00:15:48,000 --> 00:15:50,000
The tough outer shell,

236
00:15:50,000 --> 00:15:52,000
the starch-filled middle layer,

237
00:15:52,000 --> 00:15:54,000
and the small central germ.

238
00:15:54,000 --> 00:15:56,000
Add sustained heat,

239
00:15:56,000 --> 00:15:59,000
and the moisture in the center turns to steam.

240
00:15:59,000 --> 00:16:02,000
This heat and pressure gelatinizes the starch,

241
00:16:02,000 --> 00:16:05,000
until finally the shell bursts.

242
00:16:05,000 --> 00:16:07,000
As the steam is released,

243
00:16:07,000 --> 00:16:10,000
the starch cools into the fluffy white ball we know and love.

244
00:16:10,000 --> 00:16:12,000
So let me get this straight.

245
00:16:12,000 --> 00:16:16,000
The explosives didn't work because we didn't have any of the right circumstances.

246
00:16:16,000 --> 00:16:18,000
You're saying we need 450 degrees,

247
00:16:18,000 --> 00:16:20,000
even heating, over a period of time,

248
00:16:20,000 --> 00:16:23,000
more like a minute before we can actually get the popcorn to expand.

249
00:16:23,000 --> 00:16:28,000
So there's really no way for us to flash heat and have explosives make us popcorn.

250
00:16:28,000 --> 00:16:30,000
That's my understanding.

251
00:16:34,000 --> 00:16:36,000
Well, as exciting as that was,

252
00:16:36,000 --> 00:16:38,000
we didn't really pop any popcorn with explosives.

253
00:16:38,000 --> 00:16:41,000
Well, there's one more myth I really want to test at the fan-sentan,

254
00:16:41,000 --> 00:16:43,000
and that's why I brought you here to the Movie Theater.

255
00:16:43,000 --> 00:16:44,000
Which one's that?

256
00:16:44,000 --> 00:16:46,000
Well, do you remember a little movie called Real Genius?

257
00:16:46,000 --> 00:16:48,000
Yeah, patterned my life off of it.

258
00:16:48,000 --> 00:16:50,000
Do you remember the last scene in the movie?

259
00:16:50,000 --> 00:16:52,000
A laser pops an enormous amount of popcorn in the house,

260
00:16:52,000 --> 00:16:55,000
blows out all the windows and the doors just from the power of popcorn.

261
00:16:55,000 --> 00:16:57,000
And that's what we're going to test?

262
00:16:57,000 --> 00:16:59,000
Yep, that's what we're going to test. Check it out.

263
00:17:01,000 --> 00:17:03,000
A template for Grant's life.

264
00:17:03,000 --> 00:17:05,000
A monument to geekhood.

265
00:17:05,000 --> 00:17:06,000
Oh, the heavens!

266
00:17:06,000 --> 00:17:08,000
And a source for this myth.

267
00:17:10,000 --> 00:17:14,000
Can a 5 megawatt laser really cook a gigantic ball of popcorn?

268
00:17:14,000 --> 00:17:19,000
And can the expansive power unleashed really bring down the house?

269
00:17:22,000 --> 00:17:25,000
All right, well, first we need to see if you can even pop popcorn with a laser.

270
00:17:25,000 --> 00:17:28,000
And we need to characterize the force of popping popcorn.

271
00:17:28,000 --> 00:17:30,000
Okay, well, let's start out with some due diligence.

272
00:17:30,000 --> 00:17:33,000
Before we unleash the power of popcorn on an actual house,

273
00:17:33,000 --> 00:17:35,000
how about you and I go check out a military spec laser

274
00:17:35,000 --> 00:17:38,000
to see if it pops popcorn while you run some tests on force and expansion?

275
00:17:38,000 --> 00:17:39,000
All right, let's go.

276
00:17:39,000 --> 00:17:41,000
We can't leave yet. The credits are running out.

277
00:17:41,000 --> 00:17:42,000
Can we work hard on this?

278
00:17:42,000 --> 00:17:43,000
We don't work on this, do we?

279
00:17:45,000 --> 00:17:46,000
Next.

280
00:17:46,000 --> 00:17:47,000
It's a little Iwo Jima moment here.

281
00:17:47,000 --> 00:17:48,000
Yeah.

282
00:17:48,000 --> 00:17:51,000
Jamie and Adam raise the rain and the stakes.

283
00:17:54,000 --> 00:17:56,000
Then popcorn pandemonium.

284
00:17:56,000 --> 00:17:58,000
We're popping popcorn with lasers.

285
00:17:58,000 --> 00:18:01,000
Reaches all new hot heights.

286
00:18:12,000 --> 00:18:16,000
Jamie and Adam are on the runway at Alameda raising a rainmaker.

287
00:18:16,000 --> 00:18:18,000
It's a little Iwo Jima moment here.

288
00:18:18,000 --> 00:18:19,000
Yeah.

289
00:18:19,000 --> 00:18:23,000
Because to test the myth that driving fast keeps you dry,

290
00:18:23,000 --> 00:18:24,000
Holy Cropola.

291
00:18:24,000 --> 00:18:27,000
they need wet weather at the flick of a switch.

292
00:18:27,000 --> 00:18:28,000
Homo.

293
00:18:29,000 --> 00:18:32,000
And for that, they're going back to their movie roots.

294
00:18:32,000 --> 00:18:35,000
Hollywood, like Mythbusters, doesn't wait for ideal weather conditions.

295
00:18:35,000 --> 00:18:38,000
They make their own weather and this device is one of the ways they do it.

296
00:18:38,000 --> 00:18:40,000
This is a rain bar.

297
00:18:40,000 --> 00:18:41,000
Got it.

298
00:18:41,000 --> 00:18:44,000
And it sprays water through a set of spouts.

299
00:18:44,000 --> 00:18:46,000
These spouts, there's six of them.

300
00:18:46,000 --> 00:18:51,000
And if what you want is torrential rain, it can deliver 1200 gallons a minute.

301
00:18:51,000 --> 00:18:57,000
For us, it's going to be delivering a linear swath of rain 200 feet long.

302
00:18:57,000 --> 00:18:59,000
Well, everything's hooked up and in place.

303
00:18:59,000 --> 00:19:02,000
And the next thing we're going to do is a dribble test.

304
00:19:02,000 --> 00:19:07,000
We're just going to pressurize all the lines to the point where water starts dribbling out the rain heads

305
00:19:07,000 --> 00:19:09,000
because of several things.

306
00:19:09,000 --> 00:19:13,000
This amount of rain is perfect for our test.

307
00:19:13,000 --> 00:19:15,000
It's just about two inches per hour.

308
00:19:15,000 --> 00:19:19,000
One, that's a lot of weight of water, about 600 pounds per bar.

309
00:19:19,000 --> 00:19:22,000
And the weight distribution could change and they could swing.

310
00:19:22,000 --> 00:19:24,000
So we need to make sure we can control them.

311
00:19:24,000 --> 00:19:27,000
Two, there's a little bit of a West to East breeze here.

312
00:19:27,000 --> 00:19:30,000
We want to make sure the rain falls where the car is going to drive.

313
00:19:30,000 --> 00:19:33,000
So we might adjust our final bar position based on what we see here.

314
00:19:33,000 --> 00:19:35,000
That's perfect.

315
00:19:35,000 --> 00:19:38,000
With the rain ready to fall and the cameras ready to roll,

316
00:19:38,000 --> 00:19:42,000
it's time to bring in the star of the car.

317
00:19:42,000 --> 00:19:46,000
We've modified this car in a couple of ways to turn it into a data collection device for this test.

318
00:19:46,000 --> 00:19:51,000
First, because it's a fancy car, we've protected the whole interior with absorbent fabric

319
00:19:51,000 --> 00:19:53,000
so that no water can damage the car.

320
00:19:53,000 --> 00:19:57,000
Second, to measure what water does get in the car, we've got these two boards,

321
00:19:57,000 --> 00:20:00,000
which is basically a piece of plywood faced with acrylic and tissue paper.

322
00:20:00,000 --> 00:20:06,000
Any water that hits this surface is going to create a nice dark spot that's easy to see,

323
00:20:06,000 --> 00:20:09,000
easy to count and should give us a really nice comparative analysis

324
00:20:09,000 --> 00:20:13,000
of how much water is getting into the driver's compartment under the different conditions for testing.

325
00:20:13,000 --> 00:20:15,000
Well, let's get to it.

326
00:20:15,000 --> 00:20:16,000
Okay.

327
00:20:16,000 --> 00:20:22,000
And by to it, they mean using their driving instructor as a human crash test guinea pig.

328
00:20:22,000 --> 00:20:26,000
The biggest danger posed by this experiment is hydroplaning.

329
00:20:26,000 --> 00:20:31,000
That's where the car floats up on a cushion of water and you lose all control of it.

330
00:20:32,000 --> 00:20:36,000
Okay, go Rain and Brian.

331
00:20:39,000 --> 00:20:45,000
So, Brian, our safety trainer and driver is actually going to take this run at 120 miles an hour

332
00:20:45,000 --> 00:20:49,000
across the rainy tarmac to make sure that it's safe for Jamie and I to do it.

333
00:20:49,000 --> 00:20:56,000
Brian's about to hit what's essentially a sluice down skid pad at 120 miles per hour.

334
00:20:57,000 --> 00:20:59,000
This could be interesting.

335
00:21:01,000 --> 00:21:02,000
Okay.

336
00:21:09,000 --> 00:21:17,000
Out of control through 450 degrees is exactly why the expert was behind the wheel and not Adam or Jamie.

337
00:21:17,000 --> 00:21:18,000
What happened there, buddy?

338
00:21:18,000 --> 00:21:20,000
That's what we call hydroplaning.

339
00:21:20,000 --> 00:21:21,000
Wow.

340
00:21:21,000 --> 00:21:22,000
That seemed quite intense.

341
00:21:22,000 --> 00:21:24,000
It was very intense and a lot of fun.

342
00:21:27,000 --> 00:21:30,000
I gotta say, Brian gets real props for that one.

343
00:21:31,000 --> 00:21:35,000
Looking at the footage, Brian's expression didn't change at all.

344
00:21:35,000 --> 00:21:43,000
He didn't flinch while he's spinning out of control around and around and around at 120 miles an hour.

345
00:21:43,000 --> 00:21:45,000
So, one thing's clear.

346
00:21:45,000 --> 00:21:53,000
These tests will be dangerous, hitting a wet surface at higher than highway speeds as the potential to put you into a spin cycle.

347
00:21:53,000 --> 00:21:55,000
How do you feel about it, Jamie?

348
00:21:55,000 --> 00:21:56,000
He did it.

349
00:21:56,000 --> 00:21:57,000
I'll do it.

350
00:22:02,000 --> 00:22:03,000
Oh!

351
00:22:07,000 --> 00:22:09,000
My kettle corn empire!

352
00:22:10,000 --> 00:22:11,000
Why?

353
00:22:12,000 --> 00:22:17,000
Our intrepid trio are looking into unconventional ways to pop popcorn.

354
00:22:19,000 --> 00:22:23,000
And to test this popcorn themed scene from the silver screen,

355
00:22:24,000 --> 00:22:26,000
Carrie and Tori go back to school.

356
00:22:26,000 --> 00:22:32,000
Because they want to know if there's any science at all in this science fiction sounding scenario.

357
00:22:32,000 --> 00:22:38,000
Now what we're trying to find out here is can you pop popcorn with the laser and if so, could you do it from a plane?

358
00:22:38,000 --> 00:22:42,000
I believe that they're both possible, just to monitor how much laser power you have.

359
00:22:42,000 --> 00:22:44,000
Now how realistic do you think the laser in the movie was?

360
00:22:44,000 --> 00:22:46,000
Five megawatts is a stretch.

361
00:22:46,000 --> 00:22:50,000
I'm not saying it's impossible, but it's a stretch even for chemical lasers,

362
00:22:50,000 --> 00:22:54,000
which typically operate, you know, the highest power is about 100 kilowatts.

363
00:22:54,000 --> 00:22:57,000
I don't think that a five megawatt laser is around the corner just yet.

364
00:22:57,000 --> 00:23:05,000
Now one serious question that Grant wanted me to ask you was how close are we to lightsaber technology?

365
00:23:08,000 --> 00:23:10,000
Oh, that's classified.

366
00:23:11,000 --> 00:23:16,000
So as unlikely as it sounds, there's a kernel of truth to this myth.

367
00:23:17,000 --> 00:23:19,000
And for proof of concept...

368
00:23:19,000 --> 00:23:21,000
Here is my popcorn kernel.

369
00:23:21,000 --> 00:23:22,000
There we go.

370
00:23:22,000 --> 00:23:26,000
They've got a 10 watt laser pointed right at it.

371
00:23:26,000 --> 00:23:28,000
We're pumping popcorn with lasers.

372
00:23:29,000 --> 00:23:35,000
Looking at the thermal camera, I'm seeing a tiny bit of heat at the top and the bottom of the kernel, and they're expanding very slowly.

373
00:23:35,000 --> 00:23:38,000
I'm pretty sure this is not how mom used to make it.

374
00:23:38,000 --> 00:23:40,000
Who does how grand-mom used to make it?

375
00:23:43,000 --> 00:23:44,000
Proof of concept!

376
00:23:45,000 --> 00:23:50,000
Well, now that you can laser pop popcorn, let's just concentrate on the power of popcorn.

377
00:23:50,000 --> 00:23:51,000
That is cool.

378
00:23:53,000 --> 00:23:54,000
Pretty good.

379
00:23:55,000 --> 00:23:56,000
After the break...

380
00:24:00,000 --> 00:24:03,000
It's all hands on deck for a full scale popcorn cookout.

381
00:24:08,000 --> 00:24:10,000
Please do not try what we do on the show at home.

382
00:24:10,000 --> 00:24:12,000
We're what you call experts.

383
00:24:12,000 --> 00:24:13,000
It's safer that way.

384
00:24:19,000 --> 00:24:22,000
In part two of popcorn pandemonium...

385
00:24:22,000 --> 00:24:24,000
We're pumping popcorn with lasers.

386
00:24:24,000 --> 00:24:31,000
Carrie Grant and Tori have discovered that just like the myth, you can actually cook popcorn with a laser.

387
00:24:31,000 --> 00:24:32,000
Proof of concept!

388
00:24:33,000 --> 00:24:39,000
So now all we need is a 5 megawatt laser, and then we can finally find out if popcorn could break down doors and windows.

389
00:24:40,000 --> 00:24:47,000
No. In fact, a hundred kilowatts is the most powerful you're going to find, and that's even in military applications.

390
00:24:47,000 --> 00:24:52,000
Yeah, so basically we're never going to find a laser big enough to pop a house full of popcorn.

391
00:24:52,000 --> 00:24:55,000
If we can't get a laser, we can substitute another heat source.

392
00:24:55,000 --> 00:24:57,000
Already on it. Induction heating.

393
00:24:57,000 --> 00:25:00,000
We just have to switch out the tin foil for some sort of steel container.

394
00:25:00,000 --> 00:25:01,000
Sounds reasonable to me.

395
00:25:01,000 --> 00:25:05,000
So did you ask him about that thing we were talking about, the laser sword?

396
00:25:05,000 --> 00:25:06,000
Actually, I did.

397
00:25:06,000 --> 00:25:07,000
And guess what?

398
00:25:07,000 --> 00:25:08,000
I got a prototype right here.

399
00:25:08,000 --> 00:25:09,000
There you go, buddy.

400
00:25:09,000 --> 00:25:10,000
Don't turn it on inside.

401
00:25:10,000 --> 00:25:12,000
I said don't turn it on inside.

402
00:25:12,000 --> 00:25:13,000
Ow!

403
00:25:13,000 --> 00:25:15,000
Cut somebody's head off!

404
00:25:15,000 --> 00:25:19,000
So out goes the science fiction-sized 5 megawatt laser.

405
00:25:19,000 --> 00:25:24,000
And in comes a giant steel frying pan, heated by electromagnetism.

406
00:25:24,000 --> 00:25:30,000
So we're trying to find out, does popcorn have the expansive power to blow open doors and windows of a house?

407
00:25:30,000 --> 00:25:37,000
Now, we know in theory that a laser can pop popcorn, but there's no way we're going to be able to get a laser powerful enough to pop a whole house full of popcorn.

408
00:25:38,000 --> 00:25:40,000
So I'm going to make a frying pan.

409
00:25:40,000 --> 00:25:46,000
And not just any normal frying pan, but a giant steel electromagnetically heated frying pan.

410
00:25:46,000 --> 00:25:48,000
This is going to be crazy.

411
00:25:49,000 --> 00:25:52,000
It's a big pan, but it's not house-sized.

412
00:25:52,000 --> 00:25:57,000
And that's because the second change to the movie scenario is one of scale.

413
00:25:57,000 --> 00:26:00,000
The team are starting small with just one window.

414
00:26:00,000 --> 00:26:02,000
Now in the movie, the weak point was the windows.

415
00:26:02,000 --> 00:26:06,000
So I'm constructing a window, putting it in a wall, making that the lid for a pan.

416
00:26:06,000 --> 00:26:11,000
Now if this myth is true, popcorn should pop like crazy, pop with mythical power,

417
00:26:11,000 --> 00:26:14,000
bust through the windows and spill out everywhere.

418
00:26:14,000 --> 00:26:16,000
That's the setup.

419
00:26:16,000 --> 00:26:18,000
And inside, Grant is using his...

420
00:26:18,000 --> 00:26:20,000
Play the Jedi Mind Force.

421
00:26:20,000 --> 00:26:22,000
...mind...

422
00:26:25,000 --> 00:26:30,000
...to crunch the crucial numbers for the expansion potential of popcorn.

423
00:26:30,000 --> 00:26:37,000
So the popped kernel has an increase in volume of approximately 30 times, which is pretty good.

424
00:26:37,000 --> 00:26:42,000
Next he uses the force, gauge, to measure the pressure of that expansion.

425
00:26:42,000 --> 00:26:45,000
Rise, popcorn, rise.

426
00:26:45,000 --> 00:26:48,000
Push on the plate and give us force.

427
00:26:49,000 --> 00:26:53,000
Which turns out to be 0.22 psi.

428
00:26:55,000 --> 00:26:57,000
So we're about to heat up the pan to cook the popcorn.

429
00:26:57,000 --> 00:27:01,000
Now the way we're going to do that is we're using an induction heating system.

430
00:27:01,000 --> 00:27:04,000
And how that works is there are copper coils underneath the steel plate

431
00:27:04,000 --> 00:27:07,000
and they send out a high-frequency AC current.

432
00:27:07,000 --> 00:27:12,000
Now that current creates a magnetic field which will move the molecules around in the steel

433
00:27:12,000 --> 00:27:16,000
as those molecules are moving and creates friction which creates heat.

434
00:27:16,000 --> 00:27:18,000
And that's how we're going to cook our popcorn.

435
00:27:18,000 --> 00:27:20,000
In essence we're making a giant skillet.

436
00:27:23,000 --> 00:27:26,000
Fuuuuuuuuck!

437
00:27:27,000 --> 00:27:31,000
So now we're going to coat the bottom of the pan with coconut oil to spread the heat evenly.

438
00:27:31,000 --> 00:27:33,000
It smells like popcorn.

439
00:27:33,000 --> 00:27:37,000
And then fill it with 3 quarters of an inch popcorn kernels.

440
00:27:38,000 --> 00:27:45,000
According to Grant's earlier calculations, 3 quarters of an inch of kernels should expand to over 20 inches.

441
00:27:46,000 --> 00:27:54,000
And with the window a mere 6 inches above the uncooked corn, we're all set to find out if popcorn has the power to break out.

442
00:27:55,000 --> 00:28:01,000
So what we're looking for in this experiment is whether the force of the popping popcorn will actually break the window.

443
00:28:01,000 --> 00:28:02,000
Okay, it's on!

444
00:28:02,000 --> 00:28:07,000
Now in my earlier experiment I found that the popcorn generated 0.22 psi.

445
00:28:08,000 --> 00:28:10,000
Now one, two, three!

446
00:28:12,000 --> 00:28:17,000
Which doesn't sound like a whole lot but consider this is a relatively large surface area

447
00:28:17,000 --> 00:28:24,000
The window's over a thousand square inches which means potentially 220 pounds of force.

448
00:28:24,000 --> 00:28:27,000
But despite a sterling, stirring effort.

449
00:28:27,000 --> 00:28:31,000
Break it, Grant! Now's your chance! Show us what you got, boy!

450
00:28:32,000 --> 00:28:36,000
The popcorn fails to make an impression on the window and it never will.

451
00:28:36,000 --> 00:28:41,000
Because confining the popcorn while it's cooking prevents it from popping.

452
00:28:41,000 --> 00:28:44,000
So it looks like most of our kernels popped and you might be thinking,

453
00:28:44,000 --> 00:28:47,000
well if they didn't bust through the window why don't they just add more popcorn?

454
00:28:47,000 --> 00:28:54,000
But there's actually a maximum amount of kernels you can use before not only is the compression start making them pop smaller but everything just burns.

455
00:28:54,000 --> 00:28:58,000
This is the most popcorn that's going to pop in these circumstances.

456
00:28:58,000 --> 00:29:06,000
So it's a catch-22. Putting pressure on the popcorn means it doesn't pop and can't exert that expensive pressure.

457
00:29:06,000 --> 00:29:08,000
But the guys aren't giving up yet.

458
00:29:09,000 --> 00:29:12,000
We do know from your experiment the pressures that the popcorn should exert.

459
00:29:12,000 --> 00:29:19,000
So what if we took the cooking out of the equation, used pre-popped popcorn and applied our own force?

460
00:29:19,000 --> 00:29:23,000
Yeah, then we can see if the popcorn is strong enough to break out of the house.

461
00:29:23,000 --> 00:29:26,000
Or whether the kernels would simply crush under those conditions.

462
00:29:26,000 --> 00:29:27,000
So back to the drawing board?

463
00:29:27,000 --> 00:29:28,000
Yeah.

464
00:29:28,000 --> 00:29:30,000
Next on Mythbusters.

465
00:29:30,000 --> 00:29:31,000
Today's forecast.

466
00:29:31,000 --> 00:29:34,000
70% chance of science.

467
00:29:34,000 --> 00:29:37,000
And 100% chance of grain.

468
00:29:38,000 --> 00:29:42,000
Then Carrie Grant and Tori pop the top off with popcorn.

469
00:29:49,000 --> 00:29:56,000
Adam and Jamie are lifting the lid on a myth that to stay dry, you don't put the top up, you put your foot down.

470
00:29:57,000 --> 00:29:58,000
First up is the control.

471
00:29:58,000 --> 00:30:04,000
See, the myth states that if it starts to rain, you're driving your convertible with the top down, you shouldn't waste your time putting it up.

472
00:30:04,000 --> 00:30:05,000
You should gun it.

473
00:30:05,000 --> 00:30:06,000
Floor it goes fast as you can.

474
00:30:06,000 --> 00:30:09,000
So of course we're going to gun it, floor it, and go as fast as we can.

475
00:30:09,000 --> 00:30:11,000
But what do we compare that to?

476
00:30:11,000 --> 00:30:20,000
We compare it to the control, which is driving into a rainstorm, stopping, putting the top up and seeing how much rain we gathered that way.

477
00:30:20,000 --> 00:30:23,000
With a direct line to the weather gods.

478
00:30:23,000 --> 00:30:25,000
Alright, stand by for pressure.

479
00:30:25,000 --> 00:30:29,000
Or at least John, the rain bar operator, Adam commences the rain.

480
00:30:29,000 --> 00:30:31,000
Today's forecast.

481
00:30:31,000 --> 00:30:34,000
70% chance of science.

482
00:30:34,000 --> 00:30:36,000
Go ahead and pressure it up.

483
00:30:36,000 --> 00:30:38,000
Jamie, come on in.

484
00:30:40,000 --> 00:30:44,000
Remember, this is a control for comparative purposes.

485
00:30:46,000 --> 00:30:48,000
Alright, now stop and put the top up.

486
00:30:50,000 --> 00:30:51,000
This looks awful.

487
00:30:51,000 --> 00:31:00,000
If you're foolish enough to be driving with the roof down while there's a rainstorm approaching, we want to know how wet you'll get in the time it takes to pop the top back on.

488
00:31:01,000 --> 00:31:03,000
Now go ahead and drive up.

489
00:31:03,000 --> 00:31:07,000
And it's pretty clear because that's one wet pineapple.

490
00:31:09,000 --> 00:31:11,000
How is that? Looks like you got soaked.

491
00:31:11,000 --> 00:31:12,000
I think so.

492
00:31:12,000 --> 00:31:14,000
Oh look at our test boards.

493
00:31:14,000 --> 00:31:17,000
There's no drops to count. They're just 100% soaked.

494
00:31:17,000 --> 00:31:30,000
I don't know whether this is going to turn out to be something to driving really fast to keep the rain out of your convertible, but it's pretty clear that stopping at all, even to put the top up, is going to get you saturated with rain pretty quickly.

495
00:31:30,000 --> 00:31:32,000
Alright, now stop and put the top up.

496
00:31:34,000 --> 00:31:36,000
Now that we've got a good control, it's time for some real testing.

497
00:31:36,000 --> 00:31:43,000
If there's any merit to this myth, we should see a lot less rain on our rain collection panels than last time.

498
00:31:43,000 --> 00:31:53,000
But the weather gods, the real ones, otherwise known as the physical forces of meteorology, decide to rain on Adam and Jamie's scientific parade.

499
00:31:53,000 --> 00:31:56,000
The tissue paper rig is not going to work in these conditions.

500
00:31:56,000 --> 00:32:02,000
Well, why don't we do some runs anyway and shoot in on high speed and look at it closely and see if we can detect any kind of pattern from it.

501
00:32:02,000 --> 00:32:05,000
Okay, that sounds good. First up, let's do 25 miles an hour.

502
00:32:05,000 --> 00:32:06,000
Okay.

503
00:32:07,000 --> 00:32:15,000
For this stately 25 mile an hour test, out go the rain detection boards and in comes the high speed camera.

504
00:32:16,000 --> 00:32:25,000
Then after a quick reset, Jamie ups the speed to a healthy 55 miles an hour before heading back to compare the two runs.

505
00:32:26,000 --> 00:32:30,000
At 25 miles an hour, I don't see any plume coming up the windshield at all.

506
00:32:30,000 --> 00:32:33,000
You will. It's coming up in just a minute. There, see?

507
00:32:33,000 --> 00:32:35,000
Yeah, it's pretty small.

508
00:32:35,000 --> 00:32:36,000
But still, you can see the effect.

509
00:32:36,000 --> 00:32:37,000
Okay.

510
00:32:37,000 --> 00:32:38,000
Then...

511
00:32:38,000 --> 00:32:39,000
It's like a lot of it's going into the cockpit though.

512
00:32:39,000 --> 00:32:43,000
Yes. Here's 55 though. The difference is actually pretty marked.

513
00:32:43,000 --> 00:32:46,000
So no plume, look at how the plume appeared.

514
00:32:46,000 --> 00:32:47,000
Oh yeah.

515
00:32:47,000 --> 00:32:48,000
Isn't that nifty?

516
00:32:48,000 --> 00:32:49,000
Yeah.

517
00:32:49,000 --> 00:32:50,000
This is totally clear.

518
00:32:50,000 --> 00:32:57,000
Totally clear? Well, there seems to be more of a plume at the faster speed, but is the cockpit actually staying drier?

519
00:32:57,000 --> 00:33:01,000
There's no way of knowing for sure until the real rain lets out.

520
00:33:03,000 --> 00:33:07,000
I'm not going to say it's too loud, but it looks like it might actually be clearing up.

521
00:33:07,000 --> 00:33:09,000
We might get a window for testing soon.

522
00:33:12,000 --> 00:33:17,000
Carrie Grant and Tori are asking, can popping popcorn blow out your house?

523
00:33:17,000 --> 00:33:20,000
It's kind of tinkling against the window. I thought they'd be more aggressive.

524
00:33:20,000 --> 00:33:21,000
Yeah.

525
00:33:21,000 --> 00:33:28,000
Large scale cooking didn't work. So they're taking heat out of the equation to focus on the expansion potential.

526
00:33:28,000 --> 00:33:35,000
Now what we do know is that if you can pop popcorn, it does exert a certain amount of force.

527
00:33:35,000 --> 00:33:41,000
This is a PSI 0.22. So we're going to try this experiment again, but in a different way.

528
00:33:41,000 --> 00:33:50,000
We're going to take a bunch of pre-pop popcorn, fill a house that we build, add our own pressure and see if the popcorn is enough to destroy the house.

529
00:33:52,000 --> 00:33:54,000
That's a little hot.

530
00:33:55,000 --> 00:33:57,000
Am I missing an eyebrow?

531
00:33:57,000 --> 00:34:01,000
We've done the calculations to fill a house that is six by six by six feet.

532
00:34:01,000 --> 00:34:05,000
We're going to need 30 55 gallon garbage bags full.

533
00:34:05,000 --> 00:34:11,000
So we've got six popcorn poppers all popping at the same time and we're working around the clock so we can fill the house.

534
00:34:12,000 --> 00:34:18,000
After the corn mountain peaks, Carrie's four-legged vacuum cleaners move in and the team can move on.

535
00:34:21,000 --> 00:34:30,000
And with a house built to code in fast forward, Grant steps up with a larger than necessary piston to apply the popcorn power.

536
00:34:30,000 --> 00:34:34,000
Ta-da! I'm not compensating for anything.

537
00:34:35,000 --> 00:34:39,000
So I'm standing underneath what would be the floor of our house.

538
00:34:39,000 --> 00:34:45,000
We're going to fill up the entire house with popcorn and then this cylinder is going to push up.

539
00:34:45,000 --> 00:34:48,000
Oh yeah, it fits.

540
00:34:48,000 --> 00:34:52,000
Now initially it's going to be just the popcorn force.

541
00:34:52,000 --> 00:34:58,000
Just to see if under ideal conditions, if we popped every kernel, what would happen to the house?

542
00:34:58,000 --> 00:35:02,000
Would it push up and blow out the windows or would it do nothing?

543
00:35:03,000 --> 00:35:04,000
There we go.

544
00:35:04,000 --> 00:35:05,000
Pump sun.

545
00:35:05,000 --> 00:35:06,000
All right, you guys ready?

546
00:35:06,000 --> 00:35:07,000
Yep.

547
00:35:07,000 --> 00:35:10,000
Okay, so this is regular popcorn popping force.

548
00:35:10,000 --> 00:35:13,000
Three, two, one.

549
00:35:13,000 --> 00:35:17,000
It's moving.

550
00:35:17,000 --> 00:35:19,000
Yeah, it's moving.

551
00:35:19,000 --> 00:35:21,000
Can you hear the creaking?

552
00:35:21,000 --> 00:35:23,000
Yeah, something's going to give.

553
00:35:23,000 --> 00:35:25,000
Is it the popcorn?

554
00:35:25,000 --> 00:35:26,000
Is it the house?

555
00:35:26,000 --> 00:35:28,000
As it turns out, neither.

556
00:35:28,000 --> 00:35:39,000
Popcorn power, which according to Grant's calculations is 0.22 psi and exactly the pressure exerted by the piston just isn't enough to do any damage at all.

557
00:35:39,000 --> 00:35:46,000
So basically the expansive pressure popcorn exerts doesn't come close to denting the door or windows.

558
00:35:46,000 --> 00:35:48,000
That means...

559
00:35:48,000 --> 00:35:50,000
I gotta say this part of the myth is looking busted.

560
00:35:50,000 --> 00:35:51,000
Yep, busted.

561
00:35:51,000 --> 00:35:52,000
Yep, busted.

562
00:35:52,000 --> 00:35:53,000
But you know what?

563
00:35:53,000 --> 00:35:55,000
We still have a house full of popcorn.

564
00:35:55,000 --> 00:35:57,000
I say we max it out, see what happens.

565
00:35:57,000 --> 00:35:58,000
I want to see what's going to go first.

566
00:35:58,000 --> 00:36:00,000
The house or the popcorn?

567
00:36:00,000 --> 00:36:01,000
Do it.

568
00:36:01,000 --> 00:36:03,000
All right, let's wreck this house.

569
00:36:03,000 --> 00:36:06,000
With Grant's piston cranked to the max.

570
00:36:06,000 --> 00:36:10,000
3, 2, 1.

571
00:36:10,000 --> 00:36:14,000
This test is a transparent excuse to destroy stuff.

572
00:36:14,000 --> 00:36:20,000
The only question is, will the popcorn crash into dust or will the house come tumbling down?

573
00:36:20,000 --> 00:36:25,000
And as it turns out, the popcorn wins out.

574
00:36:25,000 --> 00:36:28,000
It's the real popcorn!

575
00:36:28,000 --> 00:36:31,000
Or at least Grant's giant piston dent.

576
00:36:31,000 --> 00:36:33,000
It was a really popcorn power.

577
00:36:33,000 --> 00:36:35,000
That was how many tons of force?

578
00:36:35,000 --> 00:36:36,000
15.

579
00:36:36,000 --> 00:36:38,000
So it was really just popcorn as a spacer.

580
00:36:38,000 --> 00:36:39,000
Yeah.

581
00:36:39,000 --> 00:36:42,000
So popcorn power didn't really destroy the house.

582
00:36:42,000 --> 00:36:43,000
No.

583
00:36:43,000 --> 00:36:45,000
But that was cool!

584
00:36:45,000 --> 00:36:46,000
Next.

585
00:36:46,000 --> 00:36:47,000
90 miles an hour?

586
00:36:47,000 --> 00:36:48,000
90 miles an hour.

587
00:36:48,000 --> 00:36:49,000
90 miles an hour.

588
00:36:49,000 --> 00:36:50,000
Let's do it.

589
00:36:50,000 --> 00:36:51,000
Let it wreck.

590
00:36:51,000 --> 00:36:53,000
Adam and Jamie ramp it up in the rain.

591
00:36:53,000 --> 00:37:03,000
3 and popcorn pandemonium ends with a bang.

592
00:37:03,000 --> 00:37:08,000
Adam and Jamie have already seen hints of the aerodynamic basis for this myth.

593
00:37:08,000 --> 00:37:09,000
Oh yeah.

594
00:37:09,000 --> 00:37:10,000
Isn't that nifty?

595
00:37:10,000 --> 00:37:17,000
On the next 70 miles per hour run, they're looking for physical evidence on the tissue paper rain detectors.

596
00:37:17,000 --> 00:37:20,000
Jamie, you may start your run now.

597
00:37:20,000 --> 00:37:23,000
This is 70 miles per hour gunning it.

598
00:37:23,000 --> 00:37:28,000
Gun it, Jacob does.

599
00:37:28,000 --> 00:37:35,000
Hitting his mark and holding steady at the target speed for the length of the course.

600
00:37:35,000 --> 00:37:37,000
And cut the rain.

601
00:37:37,000 --> 00:37:43,000
And with no hydroplaning or dangerous spin out, it's time to take in the results.

602
00:37:43,000 --> 00:37:45,000
Oh, look at that!

603
00:37:45,000 --> 00:37:46,000
Well, that's far out.

604
00:37:46,000 --> 00:37:50,000
It looks like no rain at all hit the middle here.

605
00:37:50,000 --> 00:37:55,000
But we've got wetness up top here and on the left hand side here.

606
00:37:55,000 --> 00:38:00,000
It's important to note that whatever little water came in here on the 70 mile an hour run

607
00:38:00,000 --> 00:38:03,000
was a tiny, tiny fraction of what came in on the control.

608
00:38:03,000 --> 00:38:04,000
Totally.

609
00:38:04,000 --> 00:38:07,000
I predicted that there'd be less rain in the car on this run.

610
00:38:07,000 --> 00:38:08,000
Not nearly this little.

611
00:38:08,000 --> 00:38:11,000
It really seems to be something to this man.

612
00:38:11,000 --> 00:38:14,000
A conviction only confirmed by the high speed camera.

613
00:38:14,000 --> 00:38:15,000
That's really clear.

614
00:38:15,000 --> 00:38:17,000
It's like there's a line.

615
00:38:17,000 --> 00:38:19,000
It's a really visible bubble, isn't it?

616
00:38:19,000 --> 00:38:20,000
Yes.

617
00:38:20,000 --> 00:38:22,000
That's what the windshield's for.

618
00:38:22,000 --> 00:38:25,000
So it would seem.

619
00:38:25,000 --> 00:38:27,000
But the guys aren't done yet.

620
00:38:27,000 --> 00:38:32,000
Adam, who will observe from a safe, dry distance, feels the need for more speed.

621
00:38:32,000 --> 00:38:35,000
Well, as far as I'm concerned, we should go for 100 miles an hour

622
00:38:35,000 --> 00:38:38,000
and see if we can get those boards to stay bone dry.

623
00:38:38,000 --> 00:38:40,000
I'd go ahead and leave the traction we throw on.

624
00:38:40,000 --> 00:38:46,000
But Brian, our safety driver, is concerned about the additional soaking the surface took from the real rain.

625
00:38:46,000 --> 00:38:49,000
So he suggests sticking to 90 miles per hour.

626
00:38:49,000 --> 00:38:50,000
Later, Brian.

627
00:38:50,000 --> 00:38:51,000
Try to counterfeiter it.

628
00:38:51,000 --> 00:38:53,000
But if you can't, just let it go.

629
00:38:53,000 --> 00:38:54,000
Got it.

630
00:38:56,000 --> 00:38:57,000
Let's go to full pressure.

631
00:39:01,000 --> 00:39:03,000
I am set and ready to go.

632
00:39:03,000 --> 00:39:06,000
Awesome. Jamie, you may start your 90 mile an hour run now.

633
00:39:06,000 --> 00:39:07,000
Let it rip.

634
00:39:21,000 --> 00:39:23,000
And cut the rain.

635
00:39:23,000 --> 00:39:24,000
Nice work, Jamie.

636
00:39:24,000 --> 00:39:26,000
Get the hydroplane.

637
00:39:26,000 --> 00:39:27,000
Awesome.

638
00:39:27,000 --> 00:39:30,000
Let's open this top and see how we did.

639
00:39:30,000 --> 00:39:33,000
Oh, dude.

640
00:39:33,000 --> 00:39:35,000
Look at that.

641
00:39:35,000 --> 00:39:39,000
We wanted to find out whether driving fast when it's raining will actually keep you dry.

642
00:39:39,000 --> 00:39:41,000
And it turns out it does.

643
00:39:41,000 --> 00:39:44,000
Around 25 miles an hour or so, it's not so effective.

644
00:39:44,000 --> 00:39:48,000
But as you go faster, it actually does neglect most of the rain.

645
00:39:48,000 --> 00:39:52,000
Now, it's not that hard to understand really, because the rain's coming down like this.

646
00:39:52,000 --> 00:39:59,000
If you're going this way and you've got something in front of you, then it's going to catch all the rain and send it up over the top of you.

647
00:39:59,000 --> 00:40:01,000
And you stay dry.

648
00:40:01,000 --> 00:40:04,000
So it does make sense to gun it. The faster, the better, in fact.

649
00:40:04,000 --> 00:40:09,000
Yeah, you might die in the process, but you'll be dry.

650
00:40:09,000 --> 00:40:16,000
Your Honor, ladies and gentlemen of the jury, for my closing argument, I'd like to call your attention to Exhibit 24,

651
00:40:16,000 --> 00:40:21,000
which is footage from the tailgate up or down fuel efficiency myth that Mythbusters filmed.

652
00:40:21,000 --> 00:40:28,000
If you'll notice here in the Water Oatmeal test, there's a bubble formed in the back of the pickup truck that allows air to flow over the back of the pickup truck.

653
00:40:28,000 --> 00:40:34,000
The self-same aerodynamics that the engineers put into this sports car that allow it to be aerodynamic,

654
00:40:34,000 --> 00:40:39,000
even with the top down, create the same kind of bubble over the passenger compartment.

655
00:40:39,000 --> 00:40:44,000
And I contend that that's what keeps the passenger dry at high speed.

656
00:40:47,000 --> 00:40:52,000
This is a conundrum because I don't feel like it's right to call this one confirmed.

657
00:40:52,000 --> 00:40:55,000
Yeah, driving really fast in the rain can be very dangerous.

658
00:40:55,000 --> 00:40:58,000
How about plausible but not recommended?

659
00:40:58,000 --> 00:41:00,000
I'll buy that.

660
00:41:07,000 --> 00:41:11,000
It's been a long and winding road for this popcorn parable.

661
00:41:12,000 --> 00:41:17,000
Carrie Grant and Tori have discovered explosions won't pop your corn.

662
00:41:17,000 --> 00:41:19,000
That didn't work very well. It didn't work at all.

663
00:41:19,000 --> 00:41:21,000
But lasers will.

664
00:41:21,000 --> 00:41:30,000
However, a giant ball of corn popped by a 5 megawatt laser, leading to a house explosion, is pure fiction.

665
00:41:30,000 --> 00:41:31,000
Busted?

666
00:41:31,000 --> 00:41:32,000
Yep, busted.

667
00:41:33,000 --> 00:41:37,000
Now our house hasn't exploded yet, and this myth calls for an exploding house.

668
00:41:37,000 --> 00:41:39,000
So we're out here at the bomb range, and this is the plan.

669
00:41:39,000 --> 00:41:42,000
We're going to load it with C4 at the top and the bottom.

670
00:41:42,000 --> 00:41:45,000
And when this day is over, we should see splinters and popcorn.

671
00:41:45,000 --> 00:41:47,000
And that's all.

672
00:41:47,000 --> 00:41:50,000
I don't think they taught me this in bomb school.

673
00:41:50,000 --> 00:41:53,000
Well, we started with a bang, we're ending with a bang.

674
00:41:53,000 --> 00:41:56,000
So basically we've got a boom popcorn sandwich.

675
00:41:56,000 --> 00:41:58,000
Alright, you guys ready?

676
00:41:58,000 --> 00:42:01,000
And three, two, one.

677
00:42:02,000 --> 00:42:07,000
Oh, look at the rain of popcorn coming down!

678
00:42:10,000 --> 00:42:12,000
The rain of the house, too!

679
00:42:13,000 --> 00:42:16,000
Now that is exploding a house with popcorn.

680
00:42:20,000 --> 00:42:24,000
Well, not really popcorn, but C4 surrounded by popcorn.

681
00:42:25,000 --> 00:42:30,000
You know, to get this result, we had to go very far away from popcorn power.

682
00:42:32,000 --> 00:42:36,000
It didn't really push up on the house, it didn't blow the windows open.

683
00:42:36,000 --> 00:42:38,000
It didn't really do a whole lot.

684
00:42:40,000 --> 00:42:43,000
Popcorn power turned out to be science fiction.

685
00:42:43,000 --> 00:42:46,000
This explosion? Real genius.

686
00:42:54,000 --> 00:42:56,000
Hey, you! Yeah, you!

687
00:42:56,000 --> 00:42:57,000
You want more?

688
00:42:57,000 --> 00:43:00,000
Well, it's on Discovery.com slash MythBusters.