1
00:00:00,000 --> 00:00:05,000
Remember, do not try anything you are about to see at home.

2
00:00:30,000 --> 00:00:41,000
What you got there?

3
00:00:41,000 --> 00:00:42,000
This is a good one.

4
00:00:42,000 --> 00:00:46,000
Picture two bullets, each exactly the same distance from the ground,

5
00:00:46,000 --> 00:00:51,000
each released at the exact same second, except one bullet is dropped to the ground,

6
00:00:51,000 --> 00:00:53,000
the other is fired from a gun.

7
00:00:53,000 --> 00:00:58,000
The classic physics thought experiment states that both bullets will hit the ground at the same time.

8
00:00:58,000 --> 00:00:59,000
Based on what theory?

9
00:00:59,000 --> 00:01:03,000
Based on the theory that the bullet that's fired from the gun has no wings on it, no lift.

10
00:01:03,000 --> 00:01:06,000
Thus gravity has the same effect on it as it does on the droplet,

11
00:01:06,000 --> 00:01:09,000
and thus they hit the ground simultaneously.

12
00:01:09,000 --> 00:01:17,000
It's an age-old physics fable that says a bullet dropped and a bullet fired simultaneously from the same height

13
00:01:17,000 --> 00:01:19,000
will hit the ground at the same time.

14
00:01:19,000 --> 00:01:25,000
But it's so darn difficult to test that no one's tried until now.

15
00:01:25,000 --> 00:01:27,000
So what's the plan?

16
00:01:27,000 --> 00:01:30,000
Well, I've been thinking about this one for so long.

17
00:01:30,000 --> 00:01:33,000
While I have seen this experiment elucidated in textbooks the world over,

18
00:01:33,000 --> 00:01:39,000
I don't think that anyone anywhere has ever tried it full-size, full-scale,

19
00:01:39,000 --> 00:01:42,000
with real bullets coming out of real guns.

20
00:01:42,000 --> 00:01:43,000
That's what we should do.

21
00:01:43,000 --> 00:01:45,000
It sounds like it could be kind of tricky actually,

22
00:01:45,000 --> 00:01:49,000
and I think we should do some shop experiments before we start using any live rounds.

23
00:01:49,000 --> 00:01:51,000
Fair enough, let's start.

24
00:01:52,000 --> 00:01:56,000
So before going ballistic with the ballistics,

25
00:01:56,000 --> 00:02:01,000
Adam comes up with a more simple way to put that textbook theory to the test.

26
00:02:02,000 --> 00:02:05,000
Well, this test is going to be comprised of two separate parts,

27
00:02:05,000 --> 00:02:07,000
and I am using a bullet of sorts.

28
00:02:07,000 --> 00:02:11,000
You may recognize the steel ball bearing as some of our ammunition from Steam Mushinga.

29
00:02:14,000 --> 00:02:15,000
Part the first.

30
00:02:15,000 --> 00:02:18,000
I will be dropping this ball bearing from exactly table height,

31
00:02:18,000 --> 00:02:21,000
handily marked by this green line right here.

32
00:02:21,000 --> 00:02:23,000
I'll be filming its drop on a high-speed camera

33
00:02:23,000 --> 00:02:27,000
and counting how long it takes to get to the ground.

34
00:02:27,000 --> 00:02:29,000
Part the second.

35
00:02:29,000 --> 00:02:32,000
I'll be shooting this ball bearing from my little pinball shooter here,

36
00:02:32,000 --> 00:02:35,000
which I've marked out to be really accurate every time I shoot it,

37
00:02:35,000 --> 00:02:38,000
and I'm going to fire it across the same grid

38
00:02:38,000 --> 00:02:42,000
and measure how long it takes to reach the floor on the same high-speed camera.

39
00:02:42,000 --> 00:02:46,000
If this myth is true, those two times should be identical.

40
00:02:46,000 --> 00:02:48,000
Okay, here we go.

41
00:02:49,000 --> 00:02:52,000
This is the drop from table height.

42
00:02:52,000 --> 00:02:55,000
And three, two, one.

43
00:02:57,000 --> 00:02:58,000
Pretty simple.

44
00:02:59,000 --> 00:03:03,000
Couldn't be simpler, but there's a lot more to this test than meets the eye.

45
00:03:05,000 --> 00:03:08,000
Counting the frames of the high-speed shot that Marble took exactly 201 frames

46
00:03:08,000 --> 00:03:10,000
to get from my hand to the ground,

47
00:03:10,000 --> 00:03:12,000
and because we were filming at 500 frames per second,

48
00:03:12,000 --> 00:03:16,000
the same is two milliseconds, which means that the total travel was 402 milliseconds,

49
00:03:16,000 --> 00:03:18,000
or for those of you who love fractions,

50
00:03:18,000 --> 00:03:20,000
then come on, who doesn't?

51
00:03:20,000 --> 00:03:23,000
4.02 seconds.

52
00:03:23,000 --> 00:03:26,000
So, 4.02 is the benchmark.

53
00:03:26,000 --> 00:03:29,000
Now, how will the fired ball stack up?

54
00:03:29,000 --> 00:03:30,000
High-speed ready?

55
00:03:30,000 --> 00:03:33,000
Time for some pinball wizardry.

56
00:03:33,000 --> 00:03:35,000
Here we go. Pinball shooter.

57
00:03:35,000 --> 00:03:37,000
And three, two, one.

58
00:03:38,000 --> 00:03:41,000
And the results are flipping fabulous.

59
00:03:41,000 --> 00:03:43,000
What do you got?

60
00:03:43,000 --> 00:03:45,000
It's actually pretty cool.

61
00:03:45,000 --> 00:03:48,000
When I drop the ball from table height,

62
00:03:48,000 --> 00:03:51,000
it takes 402 milliseconds to reach the ground.

63
00:03:51,000 --> 00:03:53,000
When I shoot it from this pinball shooter,

64
00:03:53,000 --> 00:03:56,000
410 milliseconds to reach the ground.

65
00:03:56,000 --> 00:04:00,000
It's 8 tenths of 1% difference. That's pretty much identical.

66
00:04:00,000 --> 00:04:04,000
With less than 1% difference, that's a pretty powerful result.

67
00:04:04,000 --> 00:04:07,000
And a provisional thumbs up for the myth.

68
00:04:07,000 --> 00:04:10,000
But Jamie's not impressed.

69
00:04:10,000 --> 00:04:14,000
Okay, but I thought the story was about guns.

70
00:04:14,000 --> 00:04:17,000
You really want to get to shooting guns?

71
00:04:17,000 --> 00:04:20,000
Well, yeah.

72
00:04:25,000 --> 00:04:29,000
This Socket 2 M saga comes from the world of boxing.

73
00:04:29,000 --> 00:04:33,000
When a particularly powerful pugilist was said to be so strong,

74
00:04:33,000 --> 00:04:36,000
he could knock someone clean out of their socks.

75
00:04:36,000 --> 00:04:39,000
But is it really possible?

76
00:04:39,000 --> 00:04:41,000
Alright, knocking your socks off.

77
00:04:41,000 --> 00:04:44,000
I mean, this is a weird one, but I like it. What's the plan?

78
00:04:44,000 --> 00:04:46,000
Well, since this idiom has its roots in boxing,

79
00:04:46,000 --> 00:04:49,000
I think we definitely should start with some sort of heavy impact punch.

80
00:04:49,000 --> 00:04:51,000
And that pretty much rules any of us out.

81
00:04:51,000 --> 00:04:53,000
Okay, I got an idea.

82
00:04:53,000 --> 00:04:55,000
Let's get the nitrogen cannon from the superhero special.

83
00:04:55,000 --> 00:04:57,000
But instead of firing a grappling hook,

84
00:04:57,000 --> 00:04:59,000
we reconfigure it to fire a fist,

85
00:04:59,000 --> 00:05:02,000
giving Buster the biggest uppercut of his life.

86
00:05:02,000 --> 00:05:04,000
Well, you know what it sounds like to me?

87
00:05:04,000 --> 00:05:06,000
It's time for the main event.

88
00:05:06,000 --> 00:05:08,000
Pull your corners.

89
00:05:11,000 --> 00:05:14,000
In a long line of lethal inventions,

90
00:05:14,000 --> 00:05:18,000
Grant says this is one of the most dangerous he's ever built.

91
00:05:18,000 --> 00:05:20,000
But will it do the job on Buster?

92
00:05:20,000 --> 00:05:23,000
So, to deliver the kind of punch that might knock Buster's socks off,

93
00:05:23,000 --> 00:05:25,000
I've taken this out of retirement.

94
00:05:25,000 --> 00:05:28,000
It's our nitrogen cannon from the superhero special.

95
00:05:28,000 --> 00:05:31,000
We've fired a grappling hook to try and turn the Batmobile

96
00:05:31,000 --> 00:05:33,000
around the 90-degree corner.

97
00:05:33,000 --> 00:05:34,000
We hit it!

98
00:05:34,000 --> 00:05:37,000
And today, Grant is modifying the cannon

99
00:05:37,000 --> 00:05:40,000
to blast a killer punch to Buster's jaw,

100
00:05:40,000 --> 00:05:44,000
while Tori's turning out the all-important fist.

101
00:05:45,000 --> 00:05:47,000
So, what I have here is a solid steel rod

102
00:05:47,000 --> 00:05:49,000
that's going to go into the cannon.

103
00:05:49,000 --> 00:05:51,000
On the end of it, I'm going to attach a rubber fist.

104
00:05:51,000 --> 00:05:53,000
So, I'm going to be using a high-density,

105
00:05:53,000 --> 00:05:55,000
high-impact resistant rubber.

106
00:05:56,000 --> 00:05:58,000
I'll be able to weld it to the punching rod,

107
00:05:58,000 --> 00:06:00,000
stick it into Grant's cannon,

108
00:06:00,000 --> 00:06:02,000
fire it up at Buster's jaw,

109
00:06:02,000 --> 00:06:04,000
and see if we can knock his socks off.

110
00:06:04,000 --> 00:06:07,000
The scene is set for round one of this myth.

111
00:06:07,000 --> 00:06:10,000
All right, pal. This is your big chance.

112
00:06:10,000 --> 00:06:12,000
Don't blow it.

113
00:06:12,000 --> 00:06:15,000
Previous research says that a heavyweight boxer

114
00:06:15,000 --> 00:06:18,000
can pack a punch of 4,000 Newtons.

115
00:06:19,000 --> 00:06:21,000
Pressurizing.

116
00:06:21,000 --> 00:06:23,000
So, to match that kind of power,

117
00:06:23,000 --> 00:06:25,000
Grant primes up his pride and joy

118
00:06:25,000 --> 00:06:27,000
for the knock your socks off rubble.

119
00:06:27,000 --> 00:06:29,000
Okay.

120
00:06:29,000 --> 00:06:31,000
Knock him out of his socks?

121
00:06:31,000 --> 00:06:35,000
I think that this is actually just powerful enough

122
00:06:35,000 --> 00:06:37,000
to make that old boxing adage true.

123
00:06:38,000 --> 00:06:40,000
But Grant ain't convinced.

124
00:06:40,000 --> 00:06:44,000
I think that no matter how high we go at this cannon,

125
00:06:44,000 --> 00:06:47,000
no matter if we go through his head

126
00:06:47,000 --> 00:06:49,000
and punch a hole in the ceiling,

127
00:06:49,000 --> 00:06:51,000
none of that is going to be capable of knocking his socks off.

128
00:06:51,000 --> 00:06:54,000
I just think that there's too much body.

129
00:06:54,000 --> 00:06:56,000
You know, we're talking about a punch to the chin.

130
00:06:56,000 --> 00:06:59,000
To get that to translate all the way down to his shoes

131
00:06:59,000 --> 00:07:01,000
and kick out and blow his socks off?

132
00:07:01,000 --> 00:07:03,000
No way.

133
00:07:03,000 --> 00:07:05,000
Let's not pull any more punches

134
00:07:05,000 --> 00:07:07,000
and get this show on the road.

135
00:07:07,000 --> 00:07:09,000
Here we go.

136
00:07:09,000 --> 00:07:12,000
Three, two, one.

137
00:07:12,000 --> 00:07:14,000
Woo!

138
00:07:14,000 --> 00:07:16,000
Woo!

139
00:07:16,000 --> 00:07:18,000
Woo!

140
00:07:18,000 --> 00:07:20,000
Woo!

141
00:07:20,000 --> 00:07:22,000
Oh-ho!

142
00:07:22,000 --> 00:07:26,000
500 psi was really intense.

143
00:07:26,000 --> 00:07:28,000
Yeah, we took out the lights.

144
00:07:28,000 --> 00:07:30,000
Woo!

145
00:07:30,000 --> 00:07:33,000
That was some punch.

146
00:07:33,000 --> 00:07:35,000
But it's clear that amidst the carnage,

147
00:07:35,000 --> 00:07:38,000
Buster's socks stayed put.

148
00:07:38,000 --> 00:07:40,000
But only just.

149
00:07:40,000 --> 00:07:42,000
Whoa!

150
00:07:42,000 --> 00:07:44,000
Take a look at this. Look, look,

151
00:07:44,000 --> 00:07:46,000
they'd suck slightly got dragged off.

152
00:07:46,000 --> 00:07:49,000
Now that's what I call taking it on the chin.

153
00:07:49,000 --> 00:07:52,000
The punch not only sent Buster barreling backwards,

154
00:07:52,000 --> 00:07:54,000
it ripped off one of his shoes,

155
00:07:54,000 --> 00:07:56,000
partially dragging a sock with it.

156
00:07:56,000 --> 00:08:00,000
But it's not enough to call the myth a winner.

157
00:08:00,000 --> 00:08:02,000
So according to the high-speed footage,

158
00:08:02,000 --> 00:08:04,000
the nitro punch accelerated the fist

159
00:08:04,000 --> 00:08:08,000
to a final speed of 22.2 meters per second,

160
00:08:08,000 --> 00:08:12,000
giving us an overall force of over 6,000 newtons,

161
00:08:12,000 --> 00:08:17,000
which is 50% more than your heavyweight prize fighters' best punch.

162
00:08:17,000 --> 00:08:20,000
And even at superhuman punching strength,

163
00:08:20,000 --> 00:08:24,000
it still wasn't enough to knock Buster's socks off.

164
00:08:24,000 --> 00:08:26,000
But you know what?

165
00:08:26,000 --> 00:08:30,000
The cannon's reputation is still intact.

166
00:08:30,000 --> 00:08:32,000
Now, I'm not saying that this is busted.

167
00:08:32,000 --> 00:08:35,000
All I'm saying is right now it's not looking good for the myth.

168
00:08:35,000 --> 00:08:38,000
But let's say it wasn't a boxer that knocked the person's socks off.

169
00:08:38,000 --> 00:08:41,000
Maybe it was something bigger with more power.

170
00:08:41,000 --> 00:08:43,000
Sorry, Buster, we're gonna have to wake you up.

171
00:08:43,000 --> 00:08:45,000
We've got more experimenting to do.

172
00:08:45,000 --> 00:08:46,000
Get up, buddy.

173
00:09:05,000 --> 00:09:14,000
Bullet baloney or physics fact.

174
00:09:14,000 --> 00:09:18,000
This test is so hard, no one's ever dared try it.

175
00:09:18,000 --> 00:09:22,000
Does a bullet fired and a bullet dropped simultaneously

176
00:09:22,000 --> 00:09:26,000
from the same height hit the ground at the same time?

177
00:09:26,000 --> 00:09:30,000
Before breaking out the real bullets,

178
00:09:30,000 --> 00:09:34,000
Adam's letting loose with something a little more manageable.

179
00:09:34,000 --> 00:09:38,000
A paintball gun.

180
00:09:38,000 --> 00:09:39,000
Perfect.

181
00:09:39,000 --> 00:09:42,000
We've mounted this paintball gun so that not only is it perfectly level,

182
00:09:42,000 --> 00:09:44,000
but it's tuned back so that the paintballs will actually hit the ground

183
00:09:44,000 --> 00:09:46,000
before they hit the end of the shop.

184
00:09:46,000 --> 00:09:49,000
This should allow us to do some perfect comparisons

185
00:09:49,000 --> 00:09:53,000
between a fired projectile and a dropped projectile.

186
00:09:53,000 --> 00:09:57,000
Which brings the mythbusters neatly to their next challenge.

187
00:09:57,000 --> 00:09:59,000
When you fire a paintball gun from this gun

188
00:09:59,000 --> 00:10:01,000
and catch a shot of it on the high speed camera at the other end of the shop,

189
00:10:01,000 --> 00:10:04,000
hitting the ground, how do I know exactly when it left the gun?

190
00:10:04,000 --> 00:10:05,000
I'll tell you how.

191
00:10:05,000 --> 00:10:08,000
I've got a switch hooked up right here to the trigger of this gun.

192
00:10:08,000 --> 00:10:13,000
When I pull it, this battery powers an LED down there hooked up to our high speed camera.

193
00:10:13,000 --> 00:10:15,000
Alright, here we go.

194
00:10:15,000 --> 00:10:19,000
So without further ado, Adam does the fire test.

195
00:10:19,000 --> 00:10:21,000
Ugh!

196
00:10:21,000 --> 00:10:24,000
The high speed records the moment the light comes on

197
00:10:24,000 --> 00:10:26,000
and the paintball hitting the ground.

198
00:10:26,000 --> 00:10:29,000
Look at how beautiful that is.

199
00:10:29,000 --> 00:10:34,000
Making it possible to precisely time how long the journey from gun to ground takes.

200
00:10:34,000 --> 00:10:39,000
Which, for this test, is exactly 555 milliseconds.

201
00:10:39,000 --> 00:10:42,000
Ha ha ha ha ha!

202
00:10:42,000 --> 00:10:43,000
That is science.

203
00:10:43,000 --> 00:10:47,000
Now, Adam gets ready for part two of the experiment.

204
00:10:47,000 --> 00:10:51,000
So I'm just about to hold this paintball up at exactly the level of the barrel.

205
00:10:51,000 --> 00:10:53,000
I'm going to use a laser level to help me know it.

206
00:10:53,000 --> 00:10:58,000
Film it on high speed and time exactly how long it takes to get from my fingers to the ground.

207
00:10:58,000 --> 00:11:01,000
I will then compare that time to the fired paintball.

208
00:11:01,000 --> 00:11:06,000
Paintball drop test in three, two, one.

209
00:11:23,000 --> 00:11:27,000
Well, this is a conundrum.

210
00:11:27,000 --> 00:11:30,000
Our first two experiments seem to contradict each other.

211
00:11:30,000 --> 00:11:34,000
However, I think the culprit lies in the paintballs themselves.

212
00:11:34,000 --> 00:11:36,000
Watch this.

213
00:11:36,000 --> 00:11:39,000
See those trajectories?

214
00:11:39,000 --> 00:11:40,000
Each one's different.

215
00:11:40,000 --> 00:11:41,000
They're curving.

216
00:11:41,000 --> 00:11:44,000
That tells me that the irregular surfaces of the paintballs,

217
00:11:44,000 --> 00:11:49,000
manufacturing vagaries, is causing these things to have aerodynamic artifacts

218
00:11:49,000 --> 00:11:51,000
that makes them inaccurate.

219
00:11:51,000 --> 00:11:55,000
And thus, I think renders the paintball test invalid.

220
00:11:55,000 --> 00:12:00,000
I don't see anywhere to go with this except to start using real bullets and soon.

221
00:12:00,000 --> 00:12:09,000
Carry, Tori and Grant are trying to literally knock someone's socks off.

222
00:12:09,000 --> 00:12:14,000
A KO to the kisser put Buster down for the count.

223
00:12:14,000 --> 00:12:18,000
And just about totaled the workshop.

224
00:12:18,000 --> 00:12:21,000
We knocked Buster out.

225
00:12:21,000 --> 00:12:26,000
So now the team is ramping up outdoors with more power.

226
00:12:27,000 --> 00:12:30,000
Look at the size of this thing.

227
00:12:30,000 --> 00:12:33,000
Buster is going to be hating it.

228
00:12:33,000 --> 00:12:40,000
More power means more force and possibly a greater chance of knocking off Buster's socks.

229
00:12:40,000 --> 00:12:43,000
This is a gravitational potential energy pendulum.

230
00:12:43,000 --> 00:12:46,000
Normally, it's used for testing highway safety barriers.

231
00:12:46,000 --> 00:12:50,000
But today, it's going to be our battering ram.

232
00:12:50,000 --> 00:12:53,000
We're going to use it to try and knock Buster's socks off.

233
00:12:53,000 --> 00:12:56,000
But before Buster gets put in the firing line...

234
00:12:56,000 --> 00:12:58,000
You can get off the brake now.

235
00:12:58,000 --> 00:13:00,000
No brakes.

236
00:13:00,000 --> 00:13:06,000
The team wants to see how powerful the pendulum of destruction is.

237
00:13:06,000 --> 00:13:07,000
Can't wait.

238
00:13:07,000 --> 00:13:09,000
Here we go.

239
00:13:09,000 --> 00:13:13,000
In three, two, one.

240
00:13:24,000 --> 00:13:27,000
That might knock Buster's socks off.

241
00:13:27,000 --> 00:13:29,000
Come on, let's see.

242
00:13:29,000 --> 00:13:34,000
Although the pendulum's impact is actually slower than the flying fist...

243
00:13:34,000 --> 00:13:41,000
Because its mass is so much greater, it's able to deliver over 20 times the force of the nitro cannon.

244
00:13:41,000 --> 00:13:43,000
That's one hell of a punch.

245
00:13:43,000 --> 00:13:45,000
Look at that.

246
00:13:45,000 --> 00:13:50,000
I mean, this was enough to lift this van and shift it back about four or five feet.

247
00:13:51,000 --> 00:13:56,000
Which in a crack nutshell is not good news for Buster.

248
00:13:56,000 --> 00:13:58,000
I think we're ready.

249
00:13:58,000 --> 00:14:00,000
Coming up...

250
00:14:00,000 --> 00:14:04,000
Adam and Jamie blaze a trail towards physics glory.

251
00:14:04,000 --> 00:14:06,000
That looks like we might have hit it.

252
00:14:06,000 --> 00:14:13,000
And Carrie, Tori and Grant make another bruising bid to knock Buster's socks off.

253
00:14:13,000 --> 00:14:14,000
Shoes are still there.

254
00:14:14,000 --> 00:14:16,000
Yeah, but let's see about the socks.

255
00:14:17,000 --> 00:14:24,000
So far, testing whether a slug fired and a slug dropped simultaneously hit the ground at the same time...

256
00:14:24,000 --> 00:14:26,000
Oh, a little too powerful.

257
00:14:26,000 --> 00:14:29,000
...has been a mixed bag for Adam and Jamie.

258
00:14:29,000 --> 00:14:31,000
Perfect.

259
00:14:31,000 --> 00:14:36,000
In two small-scale tests, the myth was falling towards confirmed in one...

260
00:14:37,000 --> 00:14:39,000
It's pretty much identical.

261
00:14:39,000 --> 00:14:41,000
But busted in the other.

262
00:14:41,000 --> 00:14:43,000
So, what now?

263
00:14:43,000 --> 00:14:48,000
We gotta go full-scale with bullets, but dude, how difficult is that gonna be?

264
00:14:48,000 --> 00:14:53,000
I mean, for starters, I don't know how far a bullet fired level from a gun even goes.

265
00:14:53,000 --> 00:14:55,000
Well, why don't we try a .45 caliber pistol?

266
00:14:55,000 --> 00:15:00,000
I mean, that has a large, big, large hole in it.

267
00:15:00,000 --> 00:15:02,000
And head out to the range and see where it hits the ground.

268
00:15:02,000 --> 00:15:03,000
Exactly.

269
00:15:03,000 --> 00:15:05,000
Perfect. Let's do it.

270
00:15:05,000 --> 00:15:11,000
And the shooting range is the perfect place to get the lowdown on launching bullets.

271
00:15:11,000 --> 00:15:13,000
We're looking for a couple different things here.

272
00:15:13,000 --> 00:15:18,000
The first is that we need to have all the bullets coming out of the gun consistently.

273
00:15:18,000 --> 00:15:21,000
So, we know we're collecting accurate data.

274
00:15:21,000 --> 00:15:22,000
That's perfect.

275
00:15:22,000 --> 00:15:28,000
And the second thing is that we need to have all the bullets coming out of the gun consistently.

276
00:15:28,000 --> 00:15:29,000
That's perfect.

277
00:15:29,000 --> 00:15:38,000
The second one is we're wanting to find out how they're dropping, how far away from that gun they travel before they hit the ground.

278
00:15:38,000 --> 00:15:46,000
And before the boys blaze away, they're rigging the gun rigid and level, exactly 36 inches off the ground.

279
00:15:46,000 --> 00:15:48,000
Nice. I think we're ready.

280
00:15:48,000 --> 00:15:54,000
The reason we've gone level is that I'm only interested in gravity's effect on the bullet once it leaves the gun.

281
00:15:54,000 --> 00:15:58,000
If I am the gun higher, that bullet will go farther, but it's going farther because of its trajectory.

282
00:15:58,000 --> 00:16:02,000
If I shoot it level, then it starts dropping.

283
00:16:02,000 --> 00:16:04,000
Gravity starts having effect the moment it leaves the barrel.

284
00:16:04,000 --> 00:16:05,000
And that's what I'm interested in.

285
00:16:05,000 --> 00:16:06,000
How fast does it drop?

286
00:16:06,000 --> 00:16:08,000
And how far does it go?

287
00:16:10,000 --> 00:16:11,000
Gun is off.

288
00:16:11,000 --> 00:16:15,000
Right now, the guys have no idea where the bullet will land.

289
00:16:15,000 --> 00:16:26,000
So Adam and Jamie test to see how far the bullet falls over 100, 200 and 300 feet.

290
00:16:30,000 --> 00:16:32,000
That one was half an inch above the other one. Let's go take a look.

291
00:16:32,000 --> 00:16:33,000
Okay.

292
00:16:34,000 --> 00:16:38,000
What we've got so far in terms of data is actually pretty freaking cool.

293
00:16:39,000 --> 00:16:41,000
This orange line represents the bullet at 100 feet.

294
00:16:42,000 --> 00:16:46,000
The laser sight was aimed just about an inch higher than that, which is just what we'd expect to see.

295
00:16:46,000 --> 00:16:51,000
A very little amount of drop off, 200 feet, a little more drop off, 300 feet.

296
00:16:51,000 --> 00:16:54,000
That blue line, a lot more drop off.

297
00:16:54,000 --> 00:17:04,000
Armed with that info, Adam and Jamie can now zero in on the drop zone, which they've calculated to be between 350 and 370 feet away.

298
00:17:05,000 --> 00:17:08,000
Well, this right here is a runway.

299
00:17:08,000 --> 00:17:12,000
It's a runway for our little bullets to land on.

300
00:17:12,000 --> 00:17:14,000
I expect their landing to be rocky.

301
00:17:14,000 --> 00:17:16,000
I expect them to bounce.

302
00:17:16,000 --> 00:17:22,000
But most of all, I expect to be able to see where they land by the marks they make on this white paper.

303
00:17:22,000 --> 00:17:27,000
And hopefully, where they land is a reasonably discreet space.

304
00:17:27,000 --> 00:17:32,000
Fire rate. Three, two, one.

305
00:17:35,000 --> 00:17:38,000
Oh, that looks like we might have hit it.

306
00:17:38,000 --> 00:17:48,000
And after letting loose one more time, Adam and Jamie discover the bullets are biting the dust roughly 360 feet from the gun.

307
00:17:50,000 --> 00:17:52,000
I think we got what we came for.

308
00:17:53,000 --> 00:17:58,000
We've been able to predict fairly consistently where the bullets are hitting the ground.

309
00:17:58,000 --> 00:18:03,000
But the problem is we're outside, we could get a breeze that might kind of skew the results.

310
00:18:03,000 --> 00:18:08,000
And also, and this is the most important thing, the ground here is really uneven.

311
00:18:08,000 --> 00:18:13,000
So to go forward from here, we need a perfectly flat surface to work off of.

312
00:18:13,000 --> 00:18:17,000
Well, all we need now is 400 feet of flat floor.

313
00:18:17,000 --> 00:18:20,000
I think I might be able to handle that.

314
00:18:23,000 --> 00:18:25,000
Three, two, one.

315
00:18:25,000 --> 00:18:31,000
Carri Tori and Grant are busting Buster's chops, trying to knock him out of his car.

316
00:18:31,000 --> 00:18:34,000
Yeah, we took out the lights. Woo!

317
00:18:34,000 --> 00:18:40,000
Now they're winding the carnage up a notch at a car-clobbering crash test station.

318
00:18:40,000 --> 00:18:50,000
And these guys know how to wreck stuff. They smashed our moose, they smashed our trailer, and they smashed our fruit stand.

319
00:18:52,000 --> 00:18:55,000
Now they're going to smash Buster.

320
00:18:55,000 --> 00:19:00,000
So while the team dresses Buster in a pair of everyday shoes and socks...

321
00:19:00,000 --> 00:19:05,000
By the way, thanks to Andrew Parris of Houston, Texas, for letting us use his socks.

322
00:19:05,000 --> 00:19:12,000
And knocked out of Andrew's socks or not, it's clear that Buster's in for a torrent time.

323
00:19:13,000 --> 00:19:16,000
This is knock your socks off experiment.

324
00:19:16,000 --> 00:19:19,000
Buster in shoes and socks versus battering ram.

325
00:19:19,000 --> 00:19:22,000
In three, two, one.

326
00:19:34,000 --> 00:19:35,000
The shoes didn't fall off at all.

327
00:19:35,000 --> 00:19:37,000
Let's see if they loosened it all.

328
00:19:37,000 --> 00:19:40,000
That's a pretty massive hit. Dang, that looked like it hurt.

329
00:19:41,000 --> 00:19:43,000
Yep, that's a definite ouch.

330
00:19:43,000 --> 00:19:48,000
Buster just got walloped with 17,000 pounds of body-breaking force.

331
00:19:48,000 --> 00:19:53,000
But did his footwear fly? Hmm, not this time.

332
00:19:53,000 --> 00:19:55,000
Look at that. They're not even loose.

333
00:19:55,000 --> 00:19:58,000
I bet his joints are looser than the shoes.

334
00:19:58,000 --> 00:20:00,000
It looks like he's still in good shape.

335
00:20:00,000 --> 00:20:01,000
Should we set him up and go for another test?

336
00:20:01,000 --> 00:20:02,000
Yep.

337
00:20:02,000 --> 00:20:08,000
We just dropped a pendulum that weighs almost a ton straight into Buster's chest and knocked him back 40 feet.

338
00:20:08,000 --> 00:20:11,000
But we were still unable to knock off his shoes or his socks.

339
00:20:11,000 --> 00:20:13,000
But we're not done yet.

340
00:20:13,000 --> 00:20:16,000
Seen on the last test, these shoes stayed on.

341
00:20:16,000 --> 00:20:18,000
But what if he just got his socks?

342
00:20:18,000 --> 00:20:20,000
Maybe the shoes are holding the socks on.

343
00:20:20,000 --> 00:20:23,000
Sounds like Buster's in for another bashing.

344
00:20:23,000 --> 00:20:24,000
Will socks back up?

345
00:20:24,000 --> 00:20:27,000
So with Buster's feet supporting his own weight,

346
00:20:27,000 --> 00:20:30,000
the pendulum is once again lifted to full height.

347
00:20:30,000 --> 00:20:33,000
For full knock your socks off power.

348
00:20:35,000 --> 00:20:36,000
Okay, here we go.

349
00:20:36,000 --> 00:20:41,000
This is Buster with Socks Only versus a Pendulum.

350
00:20:41,000 --> 00:20:44,000
In three, two, one.

351
00:20:52,000 --> 00:20:53,000
Yeah!

352
00:20:53,000 --> 00:20:54,000
Yeah!

353
00:20:54,000 --> 00:20:56,000
His head came off.

354
00:20:56,000 --> 00:20:59,000
But look, one of his socks is knocked almost completely off.

355
00:20:59,000 --> 00:21:01,000
Yeah, but still technically on.

356
00:21:01,000 --> 00:21:04,000
Yeah, he didn't get knocked out of him necessarily.

357
00:21:04,000 --> 00:21:07,000
Oh, you guys are so hard to satisfy.

358
00:21:07,000 --> 00:21:10,000
Hmm, Maggie Carey should take a look at the high speed

359
00:21:10,000 --> 00:21:12,000
before she gets carried away.

360
00:21:14,000 --> 00:21:16,000
Here comes the pendulum.

361
00:21:16,000 --> 00:21:18,000
That's all I've got.

362
00:21:18,000 --> 00:21:19,000
Woo!

363
00:21:19,000 --> 00:21:24,000
His feet go straight back, but his socks haven't come off yet.

364
00:21:24,000 --> 00:21:25,000
Wow.

365
00:21:25,000 --> 00:21:26,000
Still on.

366
00:21:26,000 --> 00:21:28,000
Oh, there it is.

367
00:21:28,000 --> 00:21:30,000
It's dragging along the ground.

368
00:21:30,000 --> 00:21:32,000
It's not knocking him out of his socks.

369
00:21:32,000 --> 00:21:34,000
Okay, so that doesn't count?

370
00:21:34,000 --> 00:21:35,000
No.

371
00:21:35,000 --> 00:21:40,000
Confirming this myth is turning out to be as tough as Buster's stay put socks.

372
00:21:40,000 --> 00:21:42,000
Yeah, but we can't bust this now.

373
00:21:42,000 --> 00:21:44,000
I mean, I don't think we've tried hard enough to knock him out of his socks.

374
00:21:44,000 --> 00:21:48,000
No, I think we need a new technique, something a little bit more.

375
00:21:48,000 --> 00:21:51,000
Or in other words, this ain't over till it's over.

376
00:21:51,000 --> 00:21:53,000
Good work, buddy.

377
00:21:53,000 --> 00:21:57,000
And the mythbusters are going in search of more power.

378
00:21:58,000 --> 00:22:00,000
Next, pool.

379
00:22:00,000 --> 00:22:03,000
The team go all out on the explosives.

380
00:22:03,000 --> 00:22:06,000
That oughta knock some socks off.

381
00:22:06,000 --> 00:22:11,000
And later, Adam and Jamie get on target for a world first.

382
00:22:11,000 --> 00:22:13,000
Dude, I'd say that is absolutely perfect.

383
00:22:13,000 --> 00:22:14,000
Works for me.

384
00:22:17,000 --> 00:22:20,000
Please do not try what we do on this show at home.

385
00:22:20,000 --> 00:22:22,000
We're what you call experts.

386
00:22:22,000 --> 00:22:24,000
It's safer that way.

387
00:22:25,000 --> 00:22:26,000
Socks.

388
00:22:26,000 --> 00:22:29,000
Sometimes they just seem to have a mind of their own.

389
00:22:29,000 --> 00:22:32,000
But can they ever be knocked off your feet?

390
00:22:32,000 --> 00:22:36,000
Okay, so far Buster's lost a shoe, but no socks.

391
00:22:36,000 --> 00:22:38,000
Yeah, the impact doesn't seem to be working out.

392
00:22:38,000 --> 00:22:42,000
It seems like you're going to need a massive amount of force to get those socks off.

393
00:22:42,000 --> 00:22:45,000
I think you're right, and I think I have just the thing.

394
00:22:45,000 --> 00:22:46,000
What?

395
00:22:46,000 --> 00:22:47,000
Explosives.

396
00:22:47,000 --> 00:22:48,000
Surprise.

397
00:22:48,000 --> 00:22:49,000
You need to see that one coming.

398
00:22:49,000 --> 00:22:50,000
Seriously?

399
00:22:50,000 --> 00:22:51,000
Yeah.

400
00:22:51,000 --> 00:22:56,000
There have been cases of people getting their clothes blown off from an explosion, yet they survived the blast.

401
00:22:56,000 --> 00:22:58,000
So socks are closed.

402
00:22:58,000 --> 00:22:59,000
I say we test this one.

403
00:22:59,000 --> 00:23:04,000
Okay, well, let's go to the quarry and take, say, like, I don't know, 500 pounds of explosives.

404
00:23:04,000 --> 00:23:05,000
I like 500.

405
00:23:05,000 --> 00:23:10,000
Get some mannequin legs, put some socks on them, and then we'll put them at different distances from the center of the blast.

406
00:23:10,000 --> 00:23:11,000
Round three.

407
00:23:11,000 --> 00:23:14,000
Knock your socks off with an explosive shockwave.

408
00:23:14,000 --> 00:23:17,000
And you couldn't have picked a nicer day for it.

409
00:23:17,000 --> 00:23:18,000
Wow.

410
00:23:18,000 --> 00:23:21,000
Oh my gosh, this is awesome.

411
00:23:21,000 --> 00:23:24,000
Are you guys ready to map out the grid for our experiment?

412
00:23:24,000 --> 00:23:25,000
Sounds great.

413
00:23:25,000 --> 00:23:26,000
X mark spot.

414
00:23:26,000 --> 00:23:28,000
This is just like making crop circles.

415
00:23:28,000 --> 00:23:29,000
I know, exactly.

416
00:23:29,000 --> 00:23:33,000
The mannequin legs are going to be screwed onto these stands.

417
00:23:33,000 --> 00:23:38,000
Then position on a circular grid at various distances from the explosion.

418
00:23:38,000 --> 00:23:39,000
This is the blast center.

419
00:23:39,000 --> 00:23:43,000
This is where we're going to be setting off a 500 pound explosion.

420
00:23:43,000 --> 00:23:46,000
Hopefully that blast will give us enough power to knock off the socks.

421
00:23:46,000 --> 00:23:56,000
Now we're going to put our first set of legs 15 feet away from the blast, then 25 feet, 35 feet, 45 feet, and finally, 55 feet away.

422
00:23:56,000 --> 00:23:58,000
This way we have a runaway.

423
00:23:58,000 --> 00:24:07,000
The first set of legs 15 feet away from the blast, then 25 feet, 35 feet, 45 feet, and finally, 55 feet away.

424
00:24:07,000 --> 00:24:10,000
This way we have a variety of distances from the blast.

425
00:24:10,000 --> 00:24:15,000
Because the closer you are to the blast, probably the more likely that your socks are going to get knocked off.

426
00:24:15,000 --> 00:24:20,000
But let's face it, if you're standing too close to the blast, I'm sure you're going to lose more than just your socks.

427
00:24:20,000 --> 00:24:27,000
Which is why the team are now adding and living to tell the tale to the knock your socks off myth.

428
00:24:27,000 --> 00:24:31,000
So in addition to knocking your socks off, a big part of this myth is survivability.

429
00:24:31,000 --> 00:24:35,000
And we measure the force of an explosion in pounds per square inch, or PSI.

430
00:24:35,000 --> 00:24:42,000
Just to give you an idea of what we're talking about, at 2.5 PSI, you're likely to rupture your eardrums.

431
00:24:42,000 --> 00:24:50,000
And we've calculated with 500 pounds of explosives at a range of 20 feet, you're going to experience over 100 PSI.

432
00:24:50,000 --> 00:24:53,000
Which means a very high likelihood of death.

433
00:24:53,000 --> 00:25:00,000
To measure exactly where that lethal pressure kicks in, Grant is assembling some super sensitive equipment.

434
00:25:00,000 --> 00:25:08,000
This is a burst disk made by our friends at Oseco. It's a very thin metal membrane that's calibrated to rupture at 100 PSI.

435
00:25:08,000 --> 00:25:15,000
That's very simple. The pressure wave comes in here. If it's less than 100 PSI, then it just remains intact.

436
00:25:15,000 --> 00:25:20,000
But if it exceeds 100 PSI, it actually blows through here, leaving a hole.

437
00:25:20,000 --> 00:25:28,000
Now if this is still intact at the end of the experiment, and we've blown the socks off, then there's a real chance of confirming this myth.

438
00:25:28,000 --> 00:25:32,000
Meanwhile, Carrie and Tori dull out the dummies.

439
00:25:32,000 --> 00:25:39,000
We've specifically designed these legs to give us every opportunity for a successful sock blast removal.

440
00:25:39,000 --> 00:25:44,000
Now we've got one foot on the ground, one foot in the air as if you were running or walking.

441
00:25:44,000 --> 00:25:49,000
That way if a sock is going to come off in either of these positions, myth is confirmed.

442
00:25:50,000 --> 00:25:57,000
And just to mark this explosive occasion, the official Mythbusters sneaker.

443
00:25:57,000 --> 00:25:59,000
They're blast zone shoes. I like them.

444
00:25:59,000 --> 00:26:05,000
And one of our fans hand-knit an entire box of socks for us.

445
00:26:05,000 --> 00:26:10,000
Fags big time patience void of Somerville, Massachusetts.

446
00:26:10,000 --> 00:26:15,000
At each foot station, some feet will have your socks and shoes.

447
00:26:15,000 --> 00:26:17,000
How's that fit, man?

448
00:26:17,000 --> 00:26:20,000
Others, just socks.

449
00:26:20,000 --> 00:26:26,000
S-15. That means sock only at 15 feet.

450
00:26:26,000 --> 00:26:30,000
That way when these get blown to smithereens, we might be able to track where they came from.

451
00:26:30,000 --> 00:26:34,000
We're all set for the final experiment for knock your socks off.

452
00:26:34,000 --> 00:26:40,000
And I am standing in the blast center where we are going to set off 500 pounds of Ampho.

453
00:26:40,000 --> 00:26:48,000
And when that goes off, these pressure calibrated burstists are going to tell us the likelihood of survivability at 15, 25 and 45 feet.

454
00:26:48,000 --> 00:26:56,000
Then once we've gathered our data from wherever it lands in the quarry, we'll be able to determine whether you can knock your socks off with an explosion.

455
00:26:56,000 --> 00:27:01,000
But before they push the plunger, the team needs two more vital ingredients.

456
00:27:01,000 --> 00:27:02,000
Cool.

457
00:27:02,000 --> 00:27:04,000
First, the fire department.

458
00:27:04,000 --> 00:27:07,000
You know what they say, safe exploding is good exploding.

459
00:27:10,000 --> 00:27:12,000
And the explosives.

460
00:27:12,000 --> 00:27:14,000
Here comes our Ampho.

461
00:27:14,000 --> 00:27:18,000
Courtesy of retired FBI agent Frank Doyle.

462
00:27:18,000 --> 00:27:20,000
So look so you guys have a package for us.

463
00:27:20,000 --> 00:27:22,000
Oh, I brought you a really nice package.

464
00:27:22,000 --> 00:27:23,000
Ampho, right?

465
00:27:23,000 --> 00:27:24,000
Yep.

466
00:27:24,000 --> 00:27:26,000
Oh, that ought to do it.

467
00:27:26,000 --> 00:27:29,000
That ought to knock some socks off.

468
00:27:29,000 --> 00:27:31,000
You better believe it.

469
00:27:31,000 --> 00:27:36,000
And if any socks are going to get knocked off soon, this is the stuff to do it.

470
00:27:36,000 --> 00:27:38,000
This is 500 pounds of Ampho.

471
00:27:38,000 --> 00:27:44,000
Just to give you an idea, it took 800 pounds of Ampho to completely vaporize the cement truck.

472
00:27:48,000 --> 00:27:50,000
The explosives are in place.

473
00:27:50,000 --> 00:27:51,000
The legs are in place.

474
00:27:51,000 --> 00:27:53,000
The burstists are connected.

475
00:27:53,000 --> 00:27:58,000
It's time for us to run away and let Frank and the bomb squad do their final preparations.

476
00:27:58,000 --> 00:28:00,000
And then it's boom time.

477
00:28:02,000 --> 00:28:05,000
Next, the Shockwave Showdown.

478
00:28:06,000 --> 00:28:09,000
Comes to a grizzly end.

479
00:28:09,000 --> 00:28:11,000
Oh my god, there's a foot inside.

480
00:28:22,000 --> 00:28:28,000
Once upon a time in the Wild West, a fired bullet could just about settle any bust up.

481
00:28:29,000 --> 00:28:31,000
All right.

482
00:28:31,000 --> 00:28:38,000
But is it true that a bullet dropped and a bullet fired simultaneously will hit the ground at the same time?

483
00:28:41,000 --> 00:28:43,000
That is science.

484
00:28:43,000 --> 00:28:44,000
Out at the range.

485
00:28:44,000 --> 00:28:46,000
All right. Good to go.

486
00:28:46,000 --> 00:28:53,000
Adam and Jamie found that a bullet from their 45 automatic flew 360 feet before it bit the dust.

487
00:28:53,000 --> 00:28:55,000
I love this myth.

488
00:28:55,000 --> 00:29:03,000
Now all they need is a location to suit one of the most sophisticated experiments the mythbusters have ever attempted.

489
00:29:06,000 --> 00:29:11,000
And down by the shores of old San Francisco Bay, they've got one.

490
00:29:11,000 --> 00:29:14,000
Ah, look at that. It's magnificent.

491
00:29:14,000 --> 00:29:17,000
I love these old military buildings.

492
00:29:17,000 --> 00:29:24,000
The historic 480 foot long Big Event Behimuth Fort Mason Center.

493
00:29:25,000 --> 00:29:28,000
Fort Mason Center is perfect for us for several reasons.

494
00:29:28,000 --> 00:29:33,000
At over 480 feet long, there's plenty of room for a fired bullet to come to rest.

495
00:29:33,000 --> 00:29:37,000
Because it's enclosed, there's no wind to worry about affecting our bullet.

496
00:29:37,000 --> 00:29:40,000
And then lastly, it's perfectly level.

497
00:29:41,000 --> 00:29:49,000
So with the gun rest in place at one end of the room, Adam's first job is to make sure it's exactly 36 inches off the floor.

498
00:29:51,000 --> 00:29:53,000
And firing level.

499
00:29:53,000 --> 00:29:55,000
I'm going to fire a bullet to that target 20 feet away.

500
00:29:55,000 --> 00:29:58,000
Now within that 20 feet, the bullet's not going to drop at all.

501
00:29:58,000 --> 00:30:06,000
So as long as the bullet hole in that target is the exact same height off the ground as the barrel, I know I've got a perfectly level bullet.

502
00:30:17,000 --> 00:30:21,000
Dude, I'd say that is absolutely perfect right on our laser line.

503
00:30:22,000 --> 00:30:23,000
That gun's firing level.

504
00:30:23,000 --> 00:30:25,000
Works for me.

505
00:30:26,000 --> 00:30:31,000
With the fired bullet rig sorted for now, Jamie rolls out the other half of the experiment.

506
00:30:32,000 --> 00:30:43,000
This is my bullet drop rate and the key component is this electromagnet right here because it'll hold on to my bullet and then on cue, it'll drop the bullet.

507
00:30:43,000 --> 00:30:53,000
Okay, we've got all the sensors we need and all the equipment we need to time the exact amount of time it takes a bullet both to be dropped from 36 inches and to be fired from 36 inches off the ground.

508
00:30:54,000 --> 00:31:00,000
And we could simply compare those two times like we did with the paintball, but that's not good enough for us.

509
00:31:01,000 --> 00:31:03,000
For we have a bigger vision.

510
00:31:03,000 --> 00:31:07,000
We want to see that drop bullet hit the ground in the spot.

511
00:31:07,000 --> 00:31:09,000
The fired bullet will be skipping off.

512
00:31:09,000 --> 00:31:11,000
That's what we're about to set up.

513
00:31:11,000 --> 00:31:17,000
That's right folks, this time both halves of the experiment are going to happen at the same time.

514
00:31:18,000 --> 00:31:27,000
So before rolling the drop rig 360 feet down the room, the boys just want to make sure their little synchronizing system is going to work.

515
00:31:28,000 --> 00:31:34,000
Simultaneous firing and bullet drop test in three, two, one.

516
00:31:35,000 --> 00:31:40,000
Let's see how it looked on high speed.

517
00:31:41,000 --> 00:31:44,000
Where the mythbusters quickly discover they have a problem.

518
00:31:45,000 --> 00:31:47,000
Let's look back at the timing about when the light goes up.

519
00:31:48,000 --> 00:31:54,000
While the gun and the timing LED go off together, the dropped bullet decides to delay its journey south.

520
00:31:55,000 --> 00:31:57,000
It sits on that electromagnet for a while.

521
00:31:58,000 --> 00:31:59,000
Yeah.

522
00:32:00,000 --> 00:32:03,000
Do you think there's any residual magnetism or something like that?

523
00:32:04,000 --> 00:32:11,000
If you look at this high speed shot of the bullet on the electromagnet, you'll notice it hangs out for 65 milliseconds.

524
00:32:11,000 --> 00:32:16,000
That tells me there's a lot of residual magnetism in the electromagnet itself, even though it's turned off.

525
00:32:17,000 --> 00:32:19,000
And it's no good as a mechanism for our drop.

526
00:32:20,000 --> 00:32:22,000
We've got to rebuild a mechanism and we've got to rebuild it fast.

527
00:32:22,000 --> 00:32:33,000
Out at the quarry, the knock your socks off squad have wisely taken themselves to higher ground and way out of the blast zone.

528
00:32:34,000 --> 00:32:43,000
Our blast zone is set up way, way, way over there, but we've decided to come really, really far back to make sure all mythbusters big and tiny are perfectly safe.

529
00:32:44,000 --> 00:32:48,000
So in order to confirm this myth, we obviously need to have a foot with no sock on it.

530
00:32:48,000 --> 00:32:52,000
But it also has to be in the radius of survivability.

531
00:32:53,000 --> 00:33:03,000
Now what I think is anything that's within 50 feet of this blast, bear in mind this is 500 pounds of anfo is just going to be completely obliterated.

532
00:33:04,000 --> 00:33:08,000
Okay you guys, the explosives are ready, the legs are in place, the bursters are set to go.

533
00:33:09,000 --> 00:33:10,000
Are you ready?

534
00:33:10,000 --> 00:33:11,000
Oh I'm ready, you ready?

535
00:33:11,000 --> 00:33:12,000
Absolutely.

536
00:33:12,000 --> 00:33:18,000
Alright this is knock your socks off using a 500 pound explosion.

537
00:33:19,000 --> 00:33:23,000
Everybody look alive, here we go in 3, 2, 1.

538
00:33:23,000 --> 00:33:30,000
Whoa!

539
00:33:31,000 --> 00:33:33,000
Whoa!

540
00:33:33,000 --> 00:33:34,000
Yeah!

541
00:33:38,000 --> 00:33:39,000
Yeah!

542
00:33:39,000 --> 00:33:40,000
Cool!

543
00:33:41,000 --> 00:33:42,000
That was awesome!

544
00:33:43,000 --> 00:33:44,000
Wow!

545
00:33:44,000 --> 00:33:47,000
Got the delay on the boom hitting you in the chest is incredible!

546
00:33:49,000 --> 00:33:50,000
I hit him!

547
00:33:51,000 --> 00:33:53,000
That was sick!

548
00:33:53,000 --> 00:33:55,000
Alright let's go check it out.

549
00:33:57,000 --> 00:34:04,000
Remember to confirm this myth, the team needs to find a sockless foot in a critical zone of human survivability.

550
00:34:07,000 --> 00:34:08,000
Whoa!

551
00:34:09,000 --> 00:34:11,000
Look at the size of that crater!

552
00:34:11,000 --> 00:34:12,000
Oh wait here's a sock!

553
00:34:12,000 --> 00:34:13,000
Wow!

554
00:34:14,000 --> 00:34:16,000
Oh my god there's a foot inside!

555
00:34:16,000 --> 00:34:19,000
It's still in there, that's disgusting.

556
00:34:19,000 --> 00:34:20,000
I don't think this counts.

557
00:34:20,000 --> 00:34:24,000
No that's definitely not blowing your socks off.

558
00:34:24,000 --> 00:34:25,000
True!

559
00:34:25,000 --> 00:34:29,000
But a closer look at the blast zone reveals some explosive results.

560
00:34:29,000 --> 00:34:31,000
Check it out, no socks!

561
00:34:31,000 --> 00:34:33,000
What distance is, what are they?

562
00:34:33,000 --> 00:34:36,000
25 foot and this is 15 feet.

563
00:34:36,000 --> 00:34:42,000
Well they finally managed to knock some socks off, but would a human be walking away?

564
00:34:42,000 --> 00:34:45,000
Yeah you're probably not going to survive this if your socks came off.

565
00:34:45,000 --> 00:34:48,000
Wait here's the pressure disc, let's see what it says.

566
00:34:48,000 --> 00:34:49,000
Okay 25 feet.

567
00:34:49,000 --> 00:34:50,000
That's blown.

568
00:34:50,000 --> 00:34:51,000
That's blown.

569
00:34:51,000 --> 00:34:59,000
And a double check of the discs confirms that under 35 feet away this bang would have sent a mere mortal to Kingdom come.

570
00:35:01,000 --> 00:35:03,000
So that's not survivable, that doesn't count.

571
00:35:03,000 --> 00:35:09,000
But at the minimum survivable radius of 45 feet, yep they're still on.

572
00:35:09,000 --> 00:35:13,000
We've got 45, we've got 55 and the socks are still on.

573
00:35:13,000 --> 00:35:20,000
So we have no survivability at the front but we lost a few socks and then as you get to the zone of survivability we still have our socks on.

574
00:35:20,000 --> 00:35:23,000
I think that gives us both of our criteria for calling this one busted.

575
00:35:23,000 --> 00:35:24,000
Yeah this is totally busted.

576
00:35:24,000 --> 00:35:27,000
I mean if your socks do get blown off you're pretty much dead.

577
00:35:27,000 --> 00:35:30,000
Yeah you wouldn't be walking away from that.

578
00:35:30,000 --> 00:35:32,000
This was cool though.

579
00:35:32,000 --> 00:35:34,000
You might say it was a blast.

580
00:35:34,000 --> 00:35:41,000
This has been a great experiment from the beginning to the end and we've come away with some solid evidence to bust this myth.

581
00:35:42,000 --> 00:35:47,000
There's no way you can knock somebody's socks off and have them survive.

582
00:35:48,000 --> 00:35:50,000
It's just not possible.

583
00:35:50,000 --> 00:35:51,000
This one is busted.

584
00:35:54,000 --> 00:36:00,000
Next, the roller coaster ride to physics fame has Adam and Jamie both dazzled.

585
00:36:00,000 --> 00:36:05,000
I think this might be the shop we've been looking for and baffled.

586
00:36:05,000 --> 00:36:08,000
We're not even seeing the pins start to move.

587
00:36:12,000 --> 00:36:16,000
Here we go.

588
00:36:16,000 --> 00:36:21,000
Mythbusters and World Firsts go together like ammonets.

589
00:36:23,000 --> 00:36:24,000
Wow!

590
00:36:24,000 --> 00:36:26,000
There's the Pycrete boat.

591
00:36:26,000 --> 00:36:28,000
Ah, King of the Worlds!

592
00:36:28,000 --> 00:36:29,000
Breaking glass.

593
00:36:29,000 --> 00:36:33,000
And the lead balloon.

594
00:36:33,000 --> 00:36:37,000
You know if someone says it's impossible we just take it as a challenge.

595
00:36:37,000 --> 00:36:41,000
Now, the Mythbusters are testing our real doozy.

596
00:36:41,000 --> 00:36:43,000
Everything's hot, ready to go.

597
00:36:43,000 --> 00:36:47,000
Bullet shot versus bullet dropped.

598
00:36:47,000 --> 00:36:50,000
But a malingering magnet is holding up the show.

599
00:36:51,000 --> 00:36:54,000
As soon as it's released it's just staying there.

600
00:36:54,000 --> 00:36:58,000
But do you think Adam's going to let something like that stand in his way?

601
00:36:59,000 --> 00:37:01,000
Awesome! That works.

602
00:37:01,000 --> 00:37:02,000
Oh no.

603
00:37:02,000 --> 00:37:04,000
So, the electromagnetic is gone.

604
00:37:04,000 --> 00:37:05,000
It's on the scrap heap.

605
00:37:05,000 --> 00:37:07,000
We've got a new little solenoid in there which will whoop,

606
00:37:07,000 --> 00:37:09,000
get out of the way and let the bullet drop.

607
00:37:09,000 --> 00:37:12,000
All we've got to do is try it once, get our timings right,

608
00:37:12,000 --> 00:37:15,000
confirm them and we should be ready to do this test.

609
00:37:15,000 --> 00:37:20,000
So the new simultaneous release system is ready for a test fire.

610
00:37:20,000 --> 00:37:26,000
Alright, simultaneous release in three, two, one.

611
00:37:31,000 --> 00:37:34,000
Alright, let's see how it did on high speed.

612
00:37:35,000 --> 00:37:38,000
But once again, there's a timing problem.

613
00:37:39,000 --> 00:37:40,000
Solenoid's way too slow.

614
00:37:40,000 --> 00:37:41,000
Yep.

615
00:37:41,000 --> 00:37:43,000
It's not letting go.

616
00:37:44,000 --> 00:37:47,000
The most difficult thing about this whole experiment is getting the fired bullet

617
00:37:47,000 --> 00:37:52,000
and the dropped bullet to become airborne at exactly the same time.

618
00:37:52,000 --> 00:37:55,000
And when you realize all the stuff that is going on here,

619
00:37:55,000 --> 00:37:57,000
it's trickier than you might think.

620
00:37:57,000 --> 00:38:02,000
I mean, the gun has to do its thing, the release mechanism has to do its thing,

621
00:38:02,000 --> 00:38:07,000
and we can't tolerate even a few milliseconds of variation in this mix

622
00:38:07,000 --> 00:38:10,000
to make the result that we want to see happen.

623
00:38:11,000 --> 00:38:12,000
It's hard.

624
00:38:12,000 --> 00:38:14,000
Now there's an understatement.

625
00:38:14,000 --> 00:38:16,000
So cue the brainstorm.

626
00:38:16,000 --> 00:38:19,000
We're not even seeing the pins start to move.

627
00:38:21,000 --> 00:38:25,000
It gave us the problem that we currently have, which is that it's late.

628
00:38:25,000 --> 00:38:26,000
Make it hot again.

629
00:38:27,000 --> 00:38:31,000
Having spent the past four hours trying to sort out the solenoid,

630
00:38:31,000 --> 00:38:33,000
look, let's do this twice.

631
00:38:35,000 --> 00:38:38,000
The boys are now staring failures square in the face.

632
00:38:38,000 --> 00:38:42,000
And all it is is about figuring out some way to mechanically push between these two.

633
00:38:42,000 --> 00:38:46,000
until Jamie snatches victory from the jaws of defeat.

634
00:38:47,000 --> 00:38:50,000
You have a hinge that you pull in the metal.

635
00:38:50,000 --> 00:38:51,000
Yeah, that's what I meant.

636
00:38:51,000 --> 00:38:56,000
It needs to be some sort of a little bitty catch that is on its edge.

637
00:38:56,000 --> 00:38:58,000
It could make a clip like that.

638
00:38:58,000 --> 00:39:06,000
He adds a small metal clip to the trigger to delay the gun the miniscule milliseconds needed to match the solenoid.

639
00:39:08,000 --> 00:39:10,000
Everything's hot. Let's do it.

640
00:39:15,000 --> 00:39:21,000
And after a few test fires, at a bit of fine tuning, it works.

641
00:39:24,000 --> 00:39:26,000
Oh, it's good. It's good.

642
00:39:26,000 --> 00:39:30,000
It's one third of a millisecond difference.

643
00:39:30,000 --> 00:39:31,000
Wow.

644
00:39:31,000 --> 00:39:33,000
That's freaking perfect.

645
00:39:34,000 --> 00:39:36,000
Let's go do this full scale.

646
00:39:38,000 --> 00:39:43,000
Which means rolling up the room 360 feet to stake out a drop zone.

647
00:39:44,000 --> 00:39:45,000
Right about there.

648
00:39:45,000 --> 00:39:47,000
That's where they were landing out in the shooting range.

649
00:39:47,000 --> 00:39:49,000
So this is where I expect them to land here.

650
00:39:49,000 --> 00:39:50,000
Okay.

651
00:39:50,000 --> 00:40:02,000
Adam lays down a runway of white paper so the high speed camera will clearly see and measure both bullets at the same time, in the same place, and in the same shot.

652
00:40:04,000 --> 00:40:12,000
All we need now in the drop zone is Jamie's drop rig so the boys can take a shot at physics history.

653
00:40:14,000 --> 00:40:16,000
All right, you ready to do this for real?

654
00:40:17,000 --> 00:40:19,000
I think we'll hit it on the first shot.

655
00:40:19,000 --> 00:40:20,000
Really?

656
00:40:20,000 --> 00:40:21,000
Oh, yeah.

657
00:40:21,000 --> 00:40:23,000
You never make predictions. That's awesome.

658
00:40:24,000 --> 00:40:26,000
Bullet drop versus fire.

659
00:40:27,000 --> 00:40:29,000
In three, two, one.

660
00:40:34,000 --> 00:40:39,000
Adam's hoping this time that the bullet is as well placed as Jamie's optimism.

661
00:40:40,000 --> 00:40:46,000
But from 360 feet away, the boys can't see exactly where the fired bullet landed.

662
00:40:46,000 --> 00:40:47,000
Let's go see where it hit.

663
00:40:48,000 --> 00:40:52,000
So Adam takes a one-wheeled wide down the room to check out the drop zone.

664
00:40:55,000 --> 00:40:56,000
Wow.

665
00:40:57,000 --> 00:40:59,000
And the results are simply ripping.

666
00:41:00,000 --> 00:41:01,000
Can't get much closer than that.

667
00:41:02,000 --> 00:41:03,000
I can't wait to see the high speed.

668
00:41:04,000 --> 00:41:06,000
So do you see the drop zone?

669
00:41:06,000 --> 00:41:07,000
I can't wait to see the high speed.

670
00:41:08,000 --> 00:41:12,000
So dude, this bullet carved a streak right under the drop zone.

671
00:41:15,000 --> 00:41:19,000
I think this might be the shot we've been looking for.

672
00:41:20,000 --> 00:41:23,000
In real time, it's impossible to tell what happened.

673
00:41:25,000 --> 00:41:29,000
Until Adam analyzes the high speed and crunches the numbers.

674
00:41:30,000 --> 00:41:36,000
3677 minus 30915 equals 238 divided by 6.

675
00:41:38,000 --> 00:41:43,000
Dude, the difference is 39.6 milliseconds.

676
00:41:44,000 --> 00:41:47,000
Which means it's less than the human eye can make out.

677
00:41:49,000 --> 00:41:56,000
So after days of brain teasing tests, the mythbusters can claim a world first for themselves.

678
00:41:57,000 --> 00:41:59,000
And a victory for physics.

679
00:42:01,000 --> 00:42:04,000
Let me put 39.6 milliseconds into some perspective for you.

680
00:42:05,000 --> 00:42:09,000
When you go to the movies and watch a projected celluloid film on the screen,

681
00:42:09,000 --> 00:42:12,000
you know that that film is made up of individual images, right?

682
00:42:12,000 --> 00:42:16,000
What you might not have known is that it takes 24 of those per second to make up the film that you're watching.

683
00:42:16,000 --> 00:42:19,000
So each one is on screen for exactly 1.24th of a second.

684
00:42:19,000 --> 00:42:22,000
But you don't notice that because it's faster than your eye can register.

685
00:42:22,000 --> 00:42:27,000
Well, that 1.24th of a second is actually longer than 39.6 milliseconds.

686
00:42:27,000 --> 00:42:30,000
That's how close those two bullets were.

687
00:42:31,000 --> 00:42:33,000
Two bullets, one drop, one fire.

688
00:42:34,000 --> 00:42:37,000
Amazingly, they ended up in the same place at the same time.

689
00:42:40,000 --> 00:42:44,000
Dude, this myth was every bit as much fun to test as I was hoping it would be.

690
00:42:44,000 --> 00:42:47,000
And I gotta say, even though the physics textbooks had it right,

691
00:42:47,000 --> 00:42:52,000
I love the fact that we did it full size with real unmodified bullets.

692
00:42:52,000 --> 00:42:54,000
I bet no one has ever tried that before.

693
00:42:54,000 --> 00:42:55,000
I think they're right.

694
00:42:55,000 --> 00:43:00,000
And whether it was ball bearings or bullets dropped or fired, they all hit the ground at the same time.

695
00:43:00,000 --> 00:43:05,000
Yep. Gravity, man. It's not just a good idea. It's the law.

696
00:43:05,000 --> 00:43:06,000
Confirmed.

697
00:43:06,000 --> 00:43:07,000
Confirmed.

698
00:43:12,000 --> 00:43:14,000
Oh my god, that one was hilarious.

699
00:43:15,000 --> 00:43:17,000
No, I know. That one was good too.

700
00:43:17,000 --> 00:43:20,000
If you want to see more of our favorite moments on MythBusters,

701
00:43:20,000 --> 00:43:24,000
go to Discovery.com slash MythBusters and check them out.