1 00:00:00,000 --> 00:00:03,600 On this illuminating episode of Mythbusters... 2 00:00:03,600 --> 00:00:04,800 Ah! 3 00:00:04,800 --> 00:00:06,400 There, one is first class. 4 00:00:06,400 --> 00:00:09,000 Adam and Jamie have a smashing time. 5 00:00:09,000 --> 00:00:11,600 I can see nothing! This is insane! 6 00:00:11,600 --> 00:00:14,800 As they reflect on something truly enlightening. 7 00:00:14,800 --> 00:00:17,200 That looks great! I didn't think it would be this good. 8 00:00:17,200 --> 00:00:19,800 Can you really use mirrors and the sun? 9 00:00:19,800 --> 00:00:22,600 Hold, I am the master of the sun. 10 00:00:22,600 --> 00:00:24,800 As a form of ancient lighting. 11 00:00:24,800 --> 00:00:26,000 There it is! 12 00:00:26,000 --> 00:00:26,800 Boink! 13 00:00:26,800 --> 00:00:27,800 Man, that's bright. 14 00:00:27,800 --> 00:00:29,800 Then Tori, Grant and Carrie... 15 00:00:29,800 --> 00:00:30,600 Ah! 16 00:00:30,600 --> 00:00:32,600 That was hairball! 17 00:00:32,600 --> 00:00:34,800 ...investigate a freeway fable. 18 00:00:34,800 --> 00:00:36,800 I think there's some law enforcement people here. 19 00:00:36,800 --> 00:00:38,600 Very interesting talking to them. 20 00:00:38,600 --> 00:00:41,600 ...that you can slow down an out of control vehicle. 21 00:00:41,600 --> 00:00:44,400 Your idea of a safe stop is to shank me. 22 00:00:44,400 --> 00:00:48,000 ...by playing bumper cars on the blacktop. 23 00:00:48,000 --> 00:00:49,800 We're on the road to madness! 24 00:00:52,600 --> 00:00:54,400 Who are the Mythbusters? 25 00:00:54,400 --> 00:00:56,400 Adam Savage. 26 00:00:57,000 --> 00:00:58,600 What more do you need to know? 27 00:00:58,600 --> 00:01:00,000 And Jamie Heidemann. 28 00:01:00,000 --> 00:01:02,000 One in doubt. C4. 29 00:01:02,000 --> 00:01:06,400 Between them more than 30 years of special effects experience. 30 00:01:06,400 --> 00:01:08,200 Joining them... 31 00:01:08,200 --> 00:01:10,000 Grant Imahara. 32 00:01:10,000 --> 00:01:11,400 It's lethal people! 33 00:01:11,400 --> 00:01:12,600 Carrie Byron. 34 00:01:12,600 --> 00:01:14,000 Jamie just doesn't look right. 35 00:01:14,000 --> 00:01:15,800 And Tori Belleggi. 36 00:01:15,800 --> 00:01:17,200 And touchdown! 37 00:01:17,200 --> 00:01:19,400 They don't just tell the myths. 38 00:01:19,400 --> 00:01:21,400 They put them to the test. 39 00:01:27,400 --> 00:01:32,400 I've got a story for you to reflect on. 40 00:01:32,400 --> 00:01:33,400 Hit me. 41 00:01:33,400 --> 00:01:36,400 I will hit you with the sun's rays. 42 00:01:36,400 --> 00:01:41,400 In the film The Mummy, there's a scene in which the hero has to go deep into a dark tomb. 43 00:01:41,400 --> 00:01:46,400 And in order to light his way, he kicks into gear a system of ancient Egyptian mirrors. 44 00:01:46,400 --> 00:01:51,400 Which bounce the sun's rays from outside deep into the bowels of the cavernous tomb. 45 00:01:51,400 --> 00:01:53,400 So that they can navigate safely. 46 00:01:53,400 --> 00:01:54,400 How enlightened. 47 00:01:54,400 --> 00:01:56,400 Well, that's the question, isn't it? 48 00:01:56,400 --> 00:01:58,400 That's the question. 49 00:01:58,400 --> 00:01:59,400 And here's the clip. 50 00:01:59,400 --> 00:02:02,400 Sunlight is bounced into the Mummy's tomb. 51 00:02:02,400 --> 00:02:05,400 And then there was light. 52 00:02:05,400 --> 00:02:09,400 But is this ancient illumination really possible? 53 00:02:11,400 --> 00:02:12,400 So what do you want to do first? 54 00:02:12,400 --> 00:02:17,400 Well, look, this myth is all about lighting up the darkness with the sun's rays reflected. 55 00:02:17,400 --> 00:02:18,400 We need to answer the question. 56 00:02:18,400 --> 00:02:20,400 What does it mean to light up the darkness? 57 00:02:20,400 --> 00:02:21,400 We need to define that. 58 00:02:21,400 --> 00:02:25,400 What's the minimum amount of light necessary to move around in an unfamiliar space? 59 00:02:25,400 --> 00:02:26,400 Exactly. 60 00:02:26,400 --> 00:02:29,400 And I think I've got just a procedure to test this out. 61 00:02:29,400 --> 00:02:30,400 Okay. 62 00:02:30,400 --> 00:02:31,400 Oh, don't worry. 63 00:02:31,400 --> 00:02:32,400 You're going to love it. 64 00:02:34,400 --> 00:02:37,400 Before we start bouncing light around the shop with mirrors, 65 00:02:37,400 --> 00:02:40,400 we need to determine a couple of benchmarks that we'll be aiming for in these tests. 66 00:02:40,400 --> 00:02:43,400 The first one we've determined is the Hollywood benchmark. 67 00:02:43,400 --> 00:02:47,400 This is the amount of lighting that they use to light up the darkness. 68 00:02:47,400 --> 00:02:50,400 The amount of lighting that they used while filming the film 69 00:02:50,400 --> 00:02:55,400 that properly tells the story of a light beam bouncing around with mirrors and lighting up a room. 70 00:02:55,400 --> 00:02:58,400 The second benchmark is what I consider to be the heart and soul of this story, 71 00:02:58,400 --> 00:03:04,400 and it is what is the minimum amount of ambient light required to see. 72 00:03:05,400 --> 00:03:10,400 So step one is finding the minimum benchmark light level needed to see by. 73 00:03:10,400 --> 00:03:14,400 And Adam's brainwave to test it is a makeshift maze. 74 00:03:14,400 --> 00:03:18,400 We are going to try and make it through this obstacle course under very low light conditions 75 00:03:18,400 --> 00:03:21,400 to determine the minimum light conditions you can make it through this optical course 76 00:03:21,400 --> 00:03:23,400 without breaking anything. 77 00:03:27,400 --> 00:03:28,400 That's the sound of failure. 78 00:03:28,400 --> 00:03:34,400 With the course set, the guys focus on benchmark one, the Hollywood level of illumination. 79 00:03:34,400 --> 00:03:35,400 I'm all set. 80 00:03:35,400 --> 00:03:39,400 That means playing with the light level until it matches that of the movie. 81 00:03:40,400 --> 00:03:41,400 Okay, that works for me. 82 00:03:41,400 --> 00:03:43,400 And then record the lux level. 83 00:03:43,400 --> 00:03:47,400 We're going to measure our ambient light level using a meter like this one, 84 00:03:47,400 --> 00:03:52,400 which receives light in through the sensor here and converts that to an electrical signal. 85 00:03:52,400 --> 00:03:56,400 Now our computer converts that signal into what is known as lux. 86 00:03:57,400 --> 00:04:03,400 In the days when candles were king, scientists determined that one lux is the amount of illumination 87 00:04:03,400 --> 00:04:07,400 that falls over one square meter if a candle is set one meter away. 88 00:04:07,400 --> 00:04:13,400 Using this scale, about 300 lux is the minimum level needed to read by. 89 00:04:13,400 --> 00:04:16,400 But how many lux is the movie scene? 90 00:04:16,400 --> 00:04:24,400 To find out, it's trial by tweaking as the mythbusters crank up the levels bit by bit. 91 00:04:24,400 --> 00:04:25,400 201 lux. 92 00:04:25,400 --> 00:04:33,400 And with the benefit of a jump cut or two, they soon find the level they think is a lux lookalike for the mummy. 93 00:04:34,400 --> 00:04:35,400 This looks great. 94 00:04:35,400 --> 00:04:37,400 It looks just like the movie. 95 00:04:37,400 --> 00:04:40,400 Okay, that gives us an average of 200 lux. 96 00:04:40,400 --> 00:04:43,400 So that's the Hollywood level sorted. 97 00:04:43,400 --> 00:04:45,400 How will benchmark 2 compare? 98 00:04:45,400 --> 00:04:47,400 Adam's got a plan. 99 00:04:48,400 --> 00:04:53,400 Since the archeologists in this myth went from the bright sun into the tomb, we're going to do the same thing. 100 00:04:53,400 --> 00:04:57,400 Here I am in Jamie's electronics room with two lights simulating the bright sun. 101 00:04:57,400 --> 00:05:02,400 I will then leave the electronics room and walk down the tunnel of Osiris, 102 00:05:02,400 --> 00:05:06,400 otherwise known as Jamie's battery and wire storage shelf. 103 00:05:06,400 --> 00:05:13,400 I will then enter the main shop area, which will be pitch black, and I'll use this rope to guide myself out into the middle of the shop. 104 00:05:13,400 --> 00:05:17,400 And when I hit the knot, I turn and start to walk the obstacle course. 105 00:05:17,400 --> 00:05:27,400 The question is, what is the minimum amount of light required for me to walk this obstacle course without breaking anything? 106 00:05:27,400 --> 00:05:28,400 It's not going to be easy. 107 00:05:28,400 --> 00:05:33,400 To find out, Adam set his overhead light source to its bare minimum setting. 108 00:05:33,400 --> 00:05:36,400 Okay, Adam, go ahead and do your thing. 109 00:05:36,400 --> 00:05:37,400 All right, here I go. 110 00:05:37,400 --> 00:05:40,400 Jamie monitors progress on an infrared camera. 111 00:05:41,400 --> 00:05:43,400 Holy crap, there he is. 112 00:05:43,400 --> 00:05:45,400 I can see nothing. 113 00:05:45,400 --> 00:05:53,400 And for those of you who find the sound of breaking glass disturbing, now might be a good time to switch your set to mute. 114 00:05:53,400 --> 00:05:54,400 Oh, shi- 115 00:05:54,400 --> 00:05:57,400 This is, I'm the worst archeologist ever. 116 00:05:57,400 --> 00:06:00,400 It's a bruising encounter. 117 00:06:00,400 --> 00:06:06,400 As Adam, this is insane, stumbles his way through the wine glass maze. 118 00:06:06,400 --> 00:06:08,400 Here I am, I made it to the end. 119 00:06:08,400 --> 00:06:13,400 And it's clear this light level is far too low for the human eye test. 120 00:06:13,400 --> 00:06:15,400 That was a horse, so... 121 00:06:15,400 --> 00:06:18,400 You pretty much broke every glass that was in your path. 122 00:06:18,400 --> 00:06:21,400 Yeah, I think we need to turn up the lights a little bit. 123 00:06:21,400 --> 00:06:24,400 Let's make it a little brighter and see if I can't make out some of these shapes. 124 00:06:24,400 --> 00:06:25,400 Okay. 125 00:06:25,400 --> 00:06:27,400 I'll replace the glasses. 126 00:06:29,400 --> 00:06:32,400 Adam tries a slightly increased light level. 127 00:06:32,400 --> 00:06:33,400 There we go. 128 00:06:33,400 --> 00:06:35,400 One notch up and sets off again. 129 00:06:35,400 --> 00:06:37,400 Okay, Adam, you're good to go. 130 00:06:37,400 --> 00:06:39,400 All right, here I go. 131 00:06:39,400 --> 00:06:42,400 Man, I can't make out... 132 00:06:42,400 --> 00:06:45,400 There, one in his first glass. 133 00:06:45,400 --> 00:06:47,400 I'm starting to be able to see things. 134 00:06:47,400 --> 00:06:48,400 Oh, my eyes are adjusting. 135 00:06:48,400 --> 00:06:50,400 Yeah, he's doing a lot better, actually. 136 00:06:50,400 --> 00:06:51,400 It's still a blue... 137 00:06:51,400 --> 00:06:52,400 Oh! 138 00:06:52,400 --> 00:06:53,400 There's number two. 139 00:06:53,400 --> 00:06:54,400 Oh! 140 00:06:54,400 --> 00:06:55,400 Number three. 141 00:06:55,400 --> 00:06:56,400 Ah! 142 00:06:56,400 --> 00:06:57,400 Four. 143 00:06:57,400 --> 00:06:58,400 Six. 144 00:06:58,400 --> 00:06:59,400 Five. 145 00:06:59,400 --> 00:07:01,400 And after a disappointing start... 146 00:07:01,400 --> 00:07:02,400 Seven. 147 00:07:02,400 --> 00:07:06,400 It soon becomes another catacomb catastrophe. 148 00:07:06,400 --> 00:07:09,400 So they increase the light level again. 149 00:07:09,400 --> 00:07:11,400 And again. 150 00:07:11,400 --> 00:07:13,400 And again. 151 00:07:13,400 --> 00:07:18,400 But it's not until light level six that Adam finally makes it. 152 00:07:18,400 --> 00:07:19,400 This is it. 153 00:07:19,400 --> 00:07:20,400 This is a light level. 154 00:07:20,400 --> 00:07:21,400 I'm going to make it the whole way. 155 00:07:21,400 --> 00:07:24,400 Oh, oh, oh, oh, oh, oh, oh. 156 00:07:24,400 --> 00:07:26,400 Hello! 157 00:07:26,400 --> 00:07:28,400 I made it. 158 00:07:28,400 --> 00:07:34,400 So they break out the lux meter to shed some science on this final setting. 159 00:07:34,400 --> 00:07:35,400 What's the verdict? 160 00:07:35,400 --> 00:07:36,400 How dim is it? 161 00:07:36,400 --> 00:07:39,400 I get .389 of a lux. 162 00:07:39,400 --> 00:07:40,400 Of ambient light? 163 00:07:40,400 --> 00:07:41,400 Yeah. 164 00:07:41,400 --> 00:07:43,400 That is amazingly dim. 165 00:07:43,400 --> 00:07:50,400 At 0.39 lux, the minimum human eye level is 500 times dimmer than Hollywood. 166 00:07:50,400 --> 00:07:59,400 And with both benchmarks in the bag, the question now is can bouncing light with mirrors beat either benchmark? 167 00:07:59,400 --> 00:08:01,400 All right, let's turn out the lights. 168 00:08:11,400 --> 00:08:17,400 All right, so this next myth is all about driving fast out of control and it's totally dangerous. 169 00:08:17,400 --> 00:08:18,400 I love it already. 170 00:08:18,400 --> 00:08:19,400 What is it? 171 00:08:19,400 --> 00:08:26,400 If a car was out of control, could you overtake them, get in front of them and then slow down until you brought that out of control car to a stop? 172 00:08:26,400 --> 00:08:29,400 So as if they had fallen asleep or had a heart attack. 173 00:08:29,400 --> 00:08:30,400 Exactly. 174 00:08:30,400 --> 00:08:31,400 Great, let's try it. 175 00:08:31,400 --> 00:08:37,400 When a driver passes out of the wheel, things get very bad, very fast. 176 00:08:37,400 --> 00:08:40,400 But does it have to end up like this? 177 00:08:40,400 --> 00:08:42,400 Well, apparently not. 178 00:08:42,400 --> 00:08:53,400 Because according to this myth, you can safely stop a runaway car by overtaking it, then carefully bringing it to a standstill, freeway fact or blacktop baloney. 179 00:08:53,400 --> 00:08:55,400 Okay, as I see it, we have two scenarios. 180 00:08:55,400 --> 00:09:00,400 First, the driver's lost total control of the car and has no influence over it all. 181 00:09:00,400 --> 00:09:03,400 There's no steering and the foot is off the accelerator. 182 00:09:03,400 --> 00:09:04,400 So, just coasting then. 183 00:09:04,400 --> 00:09:05,400 Exactly. 184 00:09:05,400 --> 00:09:08,400 The second scenario is a little more extreme. 185 00:09:08,400 --> 00:09:11,400 There's still no steering, but the foot's jammed onto the accelerator. 186 00:09:11,400 --> 00:09:12,400 Would that make a difference? 187 00:09:12,400 --> 00:09:14,400 Alright, so we have two tests. 188 00:09:14,400 --> 00:09:16,400 It sounds like we need to go to Stunt Driving School. 189 00:09:16,400 --> 00:09:22,400 I mean, if this myth is about a car out of control, we need to see what it feels like to be in a car that's out of control. 190 00:09:22,400 --> 00:09:24,400 That is a fantastic idea. 191 00:09:24,400 --> 00:09:27,400 QL, ramped up shot and they're ready to roll. 192 00:09:27,400 --> 00:09:33,400 We're out at the Alameda runway, but before we can start our experiment, we need to learn a little precision driving. 193 00:09:33,400 --> 00:09:36,400 We're going to learn how to approach, bump and overtake a car. 194 00:09:36,400 --> 00:09:43,400 Yep, and the man to take charge of all that scary stuff, long time driving instructor Marvin Ruff. 195 00:09:43,400 --> 00:09:48,400 What sorts of skills would we need to learn in order to pull this maneuver off? 196 00:09:48,400 --> 00:09:55,400 You need to learn how to approach a car, how to get alongside it, and how to slowly make contact with that car and get it to stop. 197 00:09:57,400 --> 00:10:04,400 Unlike the real testing to come later, for this training, Carrie will always be in control of her car. 198 00:10:04,400 --> 00:10:06,400 Marvin's part is to teach Grant to... 199 00:10:06,400 --> 00:10:08,400 Twenty miles an hour? 200 00:10:08,400 --> 00:10:09,400 ...Overtake... 201 00:10:09,400 --> 00:10:12,400 Move over in front. 202 00:10:12,400 --> 00:10:14,400 Okay, here we go. 203 00:10:14,400 --> 00:10:15,400 ...Slow his car down... 204 00:10:15,400 --> 00:10:17,400 Oh my God, this feels crazy! 205 00:10:17,400 --> 00:10:19,400 ...Back the bumper against hers... 206 00:10:19,400 --> 00:10:20,400 Landing an airplane. 207 00:10:20,400 --> 00:10:23,400 It's slowing down too fast, we're going to crash. 208 00:10:25,400 --> 00:10:27,400 You are good. 209 00:10:27,400 --> 00:10:29,400 Now, just start pushing on that brake. 210 00:10:29,400 --> 00:10:31,400 ...And bring it all to a stop. 211 00:10:32,400 --> 00:10:34,400 Okay, there it is. 212 00:10:34,400 --> 00:10:35,400 Nice! 213 00:10:35,400 --> 00:10:37,400 Thank you! 214 00:10:37,400 --> 00:10:38,400 That's awesome! 215 00:10:38,400 --> 00:10:40,400 Yeah, we didn't die! 216 00:10:40,400 --> 00:10:44,400 So that's Training Hurdle One passed with flying colors. 217 00:10:47,400 --> 00:10:49,400 Alright, what do you think? 218 00:10:49,400 --> 00:10:52,400 Well, we were only going 20, but I think you did a really nice job. 219 00:10:52,400 --> 00:10:55,400 I only did that at 20 miles an hour. 220 00:10:55,400 --> 00:10:59,400 I think as we attempt to try this at faster and faster speeds, 221 00:10:59,400 --> 00:11:01,400 it's going to get a lot harder. 222 00:11:01,400 --> 00:11:03,400 Next, it's Challenge Two, 223 00:11:03,400 --> 00:11:06,400 learning what it feels like when something goes wrong. 224 00:11:06,400 --> 00:11:09,400 Courtesy of the infamous pit maneuver. 225 00:11:09,400 --> 00:11:13,400 Here we go, in three, two, one, go! 226 00:11:13,400 --> 00:11:15,400 Trying to get away from the law. 227 00:11:15,400 --> 00:11:18,400 Scarier still, the rain set in. 228 00:11:18,400 --> 00:11:20,400 And ready to put them into a spin, 229 00:11:20,400 --> 00:11:22,400 Marvin stalks the red car. 230 00:11:22,400 --> 00:11:24,400 Here he comes! 231 00:11:24,400 --> 00:11:26,400 Pulls up alongside. 232 00:11:26,400 --> 00:11:29,400 Ready to go out of control! 233 00:11:29,400 --> 00:11:31,400 Touches the rear fender. 234 00:11:39,400 --> 00:11:41,400 He just got pit maneuvered! 235 00:11:44,400 --> 00:11:47,400 That felt so good! 236 00:11:47,400 --> 00:11:49,400 It's good to be out of control sometimes. 237 00:11:49,400 --> 00:11:50,400 Training's done. 238 00:11:50,400 --> 00:11:53,400 They're pumped, pumped. 239 00:11:53,400 --> 00:11:55,400 He just got pit maneuvered! 240 00:11:55,400 --> 00:11:57,400 And amped to ramp. 241 00:11:57,400 --> 00:12:00,400 I think I feel the need, the need for speed. 242 00:12:00,400 --> 00:12:02,400 I think we can go faster now. 243 00:12:02,400 --> 00:12:05,400 Coming up on Mythbusters. 244 00:12:05,400 --> 00:12:06,400 Ta-da! 245 00:12:06,400 --> 00:12:11,400 Then, techniques of bumper stopping a careering car. 246 00:12:12,400 --> 00:12:14,400 Here we go. 247 00:12:14,400 --> 00:12:17,400 Oh, alright, alright, nice work! 248 00:12:24,400 --> 00:12:29,400 Can mirrors illuminate a murky mausoleum using the sun? 249 00:12:29,400 --> 00:12:32,400 The film The Mummy claims it can. 250 00:12:32,400 --> 00:12:35,400 And then there was light. 251 00:12:35,400 --> 00:12:38,400 But is this history or who-y? 252 00:12:38,400 --> 00:12:40,400 To find out, Adam and Jamie have established 253 00:12:40,400 --> 00:12:43,400 two benchmarks of illumination. 254 00:12:43,400 --> 00:12:45,400 I can see nothing! 255 00:12:45,400 --> 00:12:47,400 A Hollywood lighting level. 256 00:12:47,400 --> 00:12:48,400 200 lux. 257 00:12:48,400 --> 00:12:49,400 And a human eye level. 258 00:12:49,400 --> 00:12:52,400 I get .389 of a lux. 259 00:12:52,400 --> 00:12:55,400 And now, by using two types of mirrors, 260 00:12:55,400 --> 00:12:58,400 will they be able to match either benchmark? 261 00:12:59,400 --> 00:13:02,400 Well, first up, Adam polishes up some 262 00:13:02,400 --> 00:13:04,400 Yoldi metal mirrors. 263 00:13:04,400 --> 00:13:06,400 And Jamie lines them up. 264 00:13:06,400 --> 00:13:08,400 We've set these mirrors up to bounce light 265 00:13:08,400 --> 00:13:10,400 from mirror to mirror down the length of the room. 266 00:13:10,400 --> 00:13:13,400 Our goal is to see if those beams 267 00:13:13,400 --> 00:13:15,400 will raise the ambient light level. 268 00:13:15,400 --> 00:13:18,400 To test this myth, they'll line up their mirrors 269 00:13:18,400 --> 00:13:20,400 and try a sun substitute. 270 00:13:20,400 --> 00:13:22,400 The artificial sun for this test needs to be 271 00:13:22,400 --> 00:13:25,400 like the sun that is heavily collimated. 272 00:13:25,400 --> 00:13:27,400 That means all the light beams are actually 273 00:13:27,400 --> 00:13:29,400 traveling parallel to each other. 274 00:13:29,400 --> 00:13:31,400 And the most collimated light we can rent is this. 275 00:13:31,400 --> 00:13:33,400 A spotlight. 276 00:13:35,400 --> 00:13:37,400 And with the metal mirrors lined up, 277 00:13:37,400 --> 00:13:39,400 it's time for a moment of discovery. 278 00:13:39,400 --> 00:13:41,400 When the shop lights are turned off, 279 00:13:41,400 --> 00:13:44,400 how bright will the mirrors light be? 280 00:13:44,400 --> 00:13:46,400 Alright, let's turn out the lights. 281 00:13:46,400 --> 00:13:48,400 It looks great! 282 00:13:48,400 --> 00:13:50,400 I didn't think it would be this good. 283 00:13:50,400 --> 00:13:52,400 Adam's right. 284 00:13:52,400 --> 00:13:55,400 First impressions are that these mirrors are working well. 285 00:13:55,400 --> 00:13:58,400 But crucially, how are they doing in the lux department? 286 00:13:58,400 --> 00:13:59,400 Got it. 287 00:13:59,400 --> 00:14:00,400 Alright. 288 00:14:00,400 --> 00:14:03,400 The average ambient light of the polished metal, 289 00:14:03,400 --> 00:14:05,400 1.13 lux. 290 00:14:05,400 --> 00:14:08,400 Do our light bouncing mirrors work like they do in the film? 291 00:14:08,400 --> 00:14:10,400 I'd say that they do. 292 00:14:10,400 --> 00:14:12,400 There is an impressive amount of ambient light in this room, 293 00:14:12,400 --> 00:14:14,400 solely because of the mirrors. 294 00:14:14,400 --> 00:14:16,400 Do they look like they do in the movie? 295 00:14:16,400 --> 00:14:18,400 No, they do not. 296 00:14:18,400 --> 00:14:20,400 By the sixth mirror, this beam is no longer collimated. 297 00:14:20,400 --> 00:14:23,400 It is a heavily, heavily scattered affair. 298 00:14:23,400 --> 00:14:27,400 The scattering, or loss of focus, is not a good look. 299 00:14:27,400 --> 00:14:30,400 But the level of light itself is promising. 300 00:14:30,400 --> 00:14:32,400 It's clearly not as bright as the movie, 301 00:14:32,400 --> 00:14:35,400 but it is better than their naked-eye benchmark. 302 00:14:35,400 --> 00:14:39,400 So can modern glass be a more polished performer? 303 00:14:39,400 --> 00:14:42,400 This is our polished metal mirror. 304 00:14:42,400 --> 00:14:44,400 And this is our glass mirror. 305 00:14:44,400 --> 00:14:47,400 Obviously, the glass mirror is more reflective. 306 00:14:47,400 --> 00:14:49,400 Is that what we really want? 307 00:14:49,400 --> 00:14:54,400 It may be the case that the metal mirror is actually diffusing light more, 308 00:14:54,400 --> 00:14:57,400 and therefore, lighting up the ambient light in the room more. 309 00:14:57,400 --> 00:15:00,400 We're just going to have to try to find out. 310 00:15:00,400 --> 00:15:04,400 So to do that, they position the mirrors with the overhead lights on. 311 00:15:04,400 --> 00:15:07,400 And then, the mirrors are in place, and they look great. 312 00:15:07,400 --> 00:15:10,400 Here we go. 313 00:15:10,400 --> 00:15:12,400 That looks fantastic. 314 00:15:12,400 --> 00:15:14,400 It looks just like the movie. 315 00:15:14,400 --> 00:15:16,400 Surprise, surprise. 316 00:15:16,400 --> 00:15:18,400 The modern glass looks better. 317 00:15:18,400 --> 00:15:19,400 Good. 318 00:15:19,400 --> 00:15:21,400 But does the data back that up? 319 00:15:21,400 --> 00:15:23,400 How did our glass mirrors do? 320 00:15:23,400 --> 00:15:24,400 You're going to love this. 321 00:15:24,400 --> 00:15:27,400 First, you remember the ambient light reading we got from the polished metal 322 00:15:27,400 --> 00:15:29,400 was 1.13 lux? 323 00:15:29,400 --> 00:15:34,400 Our glass mirrors came in at 0.487 lux. 324 00:15:34,400 --> 00:15:35,400 Who knew? 325 00:15:35,400 --> 00:15:36,400 I know. 326 00:15:36,400 --> 00:15:37,400 Less than half. 327 00:15:37,400 --> 00:15:38,400 Isn't that amazing? 328 00:15:38,400 --> 00:15:41,400 There seems to be more going on here than meets the eye. 329 00:15:41,400 --> 00:15:45,400 The goal of all this is to raise the ambient light level in a room. 330 00:15:45,400 --> 00:15:48,400 And mirrors alone aren't going to cut it. 331 00:15:48,400 --> 00:15:51,400 That light needs to hit something that scatters it. 332 00:15:51,400 --> 00:15:54,400 It could be my white shirt, or it can be fog, 333 00:15:54,400 --> 00:15:57,400 but it has to scatter to light the room. 334 00:15:57,400 --> 00:16:00,400 Because the modern mirrors give a cleaner beam, 335 00:16:00,400 --> 00:16:04,400 the ambient light they give off is actually less than the polished metal, 336 00:16:04,400 --> 00:16:06,400 meaning the metal wins. 337 00:16:06,400 --> 00:16:11,400 What's so clear is that the real loser in this proof of concept test is Hollywood. 338 00:16:11,400 --> 00:16:15,400 Look, on this show, we've always known that Hollywood has a penchant for exaggeration. 339 00:16:15,400 --> 00:16:20,400 Our Hollywood lighting setup in this shop was 100 times brighter 340 00:16:20,400 --> 00:16:23,400 than the ambient light levels we got in our small scale testing. 341 00:16:23,400 --> 00:16:25,400 But that doesn't mean this myth is busted. 342 00:16:25,400 --> 00:16:29,400 No, no, no, no, because those ambient light levels were still 2.5 times brighter 343 00:16:29,400 --> 00:16:34,400 than what we determined was necessary to safely maneuver through our tomb. 344 00:16:34,400 --> 00:16:39,400 It tells me we have every reason to go full scale and bring in the real sun. 345 00:16:43,400 --> 00:16:46,400 Now that we've trained, it's time to move on to testing the myth. 346 00:16:46,400 --> 00:16:50,400 The first scenario is as if somebody has been driving, has passed out at the wheel, 347 00:16:50,400 --> 00:16:52,400 and now they're coasting at high speed. 348 00:16:52,400 --> 00:16:56,400 The speed we're going to start off with is first test, 35 miles an hour. 349 00:16:56,400 --> 00:16:58,400 This is going to be interesting. 350 00:16:58,400 --> 00:17:01,400 This time, they're going to try one big change. 351 00:17:01,400 --> 00:17:05,400 Once Grant gets in front of us, I'm going to take my hands off the wheel 352 00:17:05,400 --> 00:17:09,400 and my foot off the accelerator as if I've just passed out. 353 00:17:11,400 --> 00:17:15,400 Let's just hope Grant was paying attention during his training session. 354 00:17:20,400 --> 00:17:21,400 I don't think he was. 355 00:17:21,400 --> 00:17:26,400 And for test one, gentlemen and lady, start your engines. 356 00:17:26,400 --> 00:17:29,400 All right, this is 35 mile an hour. 357 00:17:29,400 --> 00:17:30,400 Drivers passed out. 358 00:17:30,400 --> 00:17:34,400 Here we go in three, two, one, go. 359 00:17:41,400 --> 00:17:45,400 All right, we're at 35 miles an hour and commence passing out. 360 00:17:45,400 --> 00:17:52,400 Look, Mom, no hands and no feet, making this officially an out of control vehicle. 361 00:17:52,400 --> 00:17:53,400 There you go. 362 00:17:53,400 --> 00:18:00,400 Which is Grant's cue to first nose his way in front before slowing down. 363 00:18:02,400 --> 00:18:08,400 And it's easy peasy, brakes a squeezy as he manages to haul, carry in. 364 00:18:11,400 --> 00:18:12,400 You did it. 365 00:18:12,400 --> 00:18:15,400 That was a little rough, but it worked. 366 00:18:15,400 --> 00:18:18,400 It totally worked at 35 miles an hour too. 367 00:18:18,400 --> 00:18:20,400 All right, what's next? 368 00:18:20,400 --> 00:18:21,400 Faster. 369 00:18:21,400 --> 00:18:24,400 Let's take it up to 55 miles an hour freeway speed. 370 00:18:24,400 --> 00:18:26,400 Let me point this out. 371 00:18:26,400 --> 00:18:31,400 The bumper of the out of control car is actually underneath the bumper of the rescue car. 372 00:18:31,400 --> 00:18:36,400 And what that does is it starts to compromise the stability of the rescue car, 373 00:18:36,400 --> 00:18:39,400 making it even harder to rescue the person. 374 00:18:39,400 --> 00:18:43,400 The 35 mile an hour no hands test is down. 375 00:18:43,400 --> 00:18:47,400 Now they're about to up the danger to freeway speed. 376 00:18:47,400 --> 00:18:50,400 For this next test, there's going to be a little more jeopardy here 377 00:18:50,400 --> 00:18:52,400 and all is great as long as you're going straight. 378 00:18:52,400 --> 00:18:54,400 We're going to be passed out at the wheel. 379 00:18:54,400 --> 00:18:57,400 The alignment's not amazing on the salvage vehicle. 380 00:18:57,400 --> 00:18:59,400 We're going double the speed. 381 00:18:59,400 --> 00:19:02,400 Here we go in three, two, one, go. 382 00:19:02,400 --> 00:19:06,400 55 plus different height bumpers plus dodgy alignment. 383 00:19:06,400 --> 00:19:09,400 Oh, and no hands either. 384 00:19:09,400 --> 00:19:11,400 30 miles an hour. 385 00:19:12,400 --> 00:19:15,400 55 miles an hour. 386 00:19:15,400 --> 00:19:17,400 And this is too exciting to pass out. 387 00:19:17,400 --> 00:19:18,400 But here we go. 388 00:19:18,400 --> 00:19:20,400 This is actually kind of scary. 389 00:19:20,400 --> 00:19:21,400 I know. 390 00:19:21,400 --> 00:19:22,400 All right, we're passing out. 391 00:19:22,400 --> 00:19:24,400 The hand is off the wheel. 392 00:19:24,400 --> 00:19:28,400 With Carrie comatose behind the wheel, Grant breaks in front. 393 00:19:28,400 --> 00:19:33,400 If he's a whisker off dead center, one car or other could spin out. 394 00:19:33,400 --> 00:19:35,400 It's a totally tricky maneuver. 395 00:19:35,400 --> 00:19:36,400 Here we go. 396 00:19:40,400 --> 00:19:42,400 All right, nice work. 397 00:19:42,400 --> 00:19:44,400 Woo hoo hoo hoo. 398 00:19:46,400 --> 00:19:48,400 That was a little scary, gotta say. 399 00:19:48,400 --> 00:19:53,400 It's a lot more challenging and at 20 miles an hour, 400 00:19:53,400 --> 00:19:55,400 the corrections are sort of gentle. 401 00:19:55,400 --> 00:19:58,400 At 55, the corrections have to be a lot faster. 402 00:19:58,400 --> 00:20:03,400 And so it's hard to do it really smooth, but it works for life. 403 00:20:03,400 --> 00:20:05,400 It worked at 55 miles an hour. 404 00:20:05,400 --> 00:20:08,400 And look, our hood is almost underneath your bumper 405 00:20:08,400 --> 00:20:10,400 and we didn't lose control. 406 00:20:10,400 --> 00:20:14,400 But having survived at 55, can they let it rest at that? 407 00:20:14,400 --> 00:20:16,400 What if the accelerator were stuck? 408 00:20:16,400 --> 00:20:19,400 Yeah, like if the guy passes out and his foot's stuck on the gas. 409 00:20:19,400 --> 00:20:21,400 Or there was some sort of malfunction. 410 00:20:21,400 --> 00:20:22,400 I like it. 411 00:20:22,400 --> 00:20:24,400 I had more danger to this experiment. 412 00:20:24,400 --> 00:20:26,400 All right, let's do it. 413 00:20:31,400 --> 00:20:36,400 Adam and Jamie have been reflecting on some proof of concept tests at the shop. 414 00:20:36,400 --> 00:20:41,400 The average ambient light of the polished metal, 1.13 lux. 415 00:20:41,400 --> 00:20:45,400 Can you really use mirrors to turn dark in today? 416 00:20:45,400 --> 00:20:48,400 This is more than enough light for me to make it through that maze. 417 00:20:48,400 --> 00:20:50,400 It's certainly a case of so far so good. 418 00:20:50,400 --> 00:20:53,400 But will these results scale up? 419 00:20:53,400 --> 00:20:58,400 Will using the real sun and a much larger crypt be the making of this myth? 420 00:20:59,400 --> 00:21:00,400 Well, this is the place. 421 00:21:00,400 --> 00:21:01,400 Looks great. 422 00:21:01,400 --> 00:21:03,400 Okay, it's not ancient Egypt. 423 00:21:03,400 --> 00:21:05,400 Shall I open it up? 424 00:21:05,400 --> 00:21:06,400 Absolutely. 425 00:21:06,400 --> 00:21:09,400 But Treasure Island in San Francisco Bay, 426 00:21:09,400 --> 00:21:13,400 uncovers an unexpected underground treasure. 427 00:21:13,400 --> 00:21:15,400 Well, shall we set up? 428 00:21:15,400 --> 00:21:17,400 Let's turn on the house lights. 429 00:21:17,400 --> 00:21:19,400 All right, house lights up. 430 00:21:19,400 --> 00:21:21,400 Well, this is our space. 431 00:21:21,400 --> 00:21:25,400 Now it's not a tomb, but it is underground and it's very, very dark. 432 00:21:25,400 --> 00:21:27,400 So it'll be perfect for our testing. 433 00:21:29,400 --> 00:21:33,400 Jamie blocks out a few spots to make total darkness. 434 00:21:33,400 --> 00:21:35,400 There we go. 435 00:21:35,400 --> 00:21:39,400 Meanwhile, Adams manufacturing modern glass mirrors. 436 00:21:39,400 --> 00:21:42,400 Now, I'll wager you're probably yelling at the screen right now, 437 00:21:42,400 --> 00:21:46,400 wondering why I'm building these with glass mirrors when our polished metal mirrors 438 00:21:46,400 --> 00:21:48,400 actually gave us a higher ambient light reading. 439 00:21:48,400 --> 00:21:51,400 1.13 lux. 440 00:21:51,400 --> 00:21:54,400 This is probably easiest to explain if you take a look at these two shots, 441 00:21:54,400 --> 00:21:56,400 our cameraman filmed this morning. 442 00:21:56,400 --> 00:21:58,400 On the left are the polished metal mirrors. 443 00:21:58,400 --> 00:21:59,400 On the right, the glass. 444 00:21:59,400 --> 00:22:01,400 Now, see how the light from the polished metal mirrors 445 00:22:01,400 --> 00:22:03,400 peters outwardly fast? 446 00:22:03,400 --> 00:22:06,400 Compare that to the glass mirrors where the light is strong 447 00:22:06,400 --> 00:22:08,400 virtually all the way to the end, 448 00:22:08,400 --> 00:22:10,400 and that's what's really important. 449 00:22:10,400 --> 00:22:12,400 This myth isn't about the type of mirror used. 450 00:22:12,400 --> 00:22:15,400 It's about bouncing a beam of light, 451 00:22:15,400 --> 00:22:17,400 and the polished metal didn't give us that beam. 452 00:22:17,400 --> 00:22:20,400 It only lasted about 15 feet before it was diffused. 453 00:22:20,400 --> 00:22:23,400 That's why the glass is what we're using in our full-size tomb. 454 00:22:25,400 --> 00:22:28,400 And with that cleared up, there's just one more ingredient left. 455 00:22:29,400 --> 00:22:30,400 The sun. 456 00:22:30,400 --> 00:22:33,400 Now all we need to do is see if the sun's going to cooperate with us. 457 00:22:33,400 --> 00:22:35,400 And that's actually a pretty big if, 458 00:22:35,400 --> 00:22:39,400 because not only do we have to worry about whether we can reflect 459 00:22:39,400 --> 00:22:43,400 sun into the building, in other words, is it lined up at a decent angle for that, 460 00:22:43,400 --> 00:22:48,400 but also this is San Francisco, and it's regularly kind of foggy here. 461 00:22:48,400 --> 00:22:52,400 If we have a few too many clouds, we're going to be out of business. 462 00:22:52,400 --> 00:22:56,400 Yep, without the big guy in the sky, the tombs doomed. 463 00:22:57,400 --> 00:23:02,400 Well, I can see the sun, but it is awfully overcast. 464 00:23:02,400 --> 00:23:04,400 It is what it is. 465 00:23:04,400 --> 00:23:09,400 So with San Francisco's fickle weather doing its garrantest to delay things, 466 00:23:09,400 --> 00:23:11,400 Adam has a backup plan. 467 00:23:11,400 --> 00:23:13,400 Have you met my son? 468 00:23:13,400 --> 00:23:16,400 It is a 7000-watt xenon spotlight. 469 00:23:16,400 --> 00:23:18,400 We're going to turn it on now. 470 00:23:20,400 --> 00:23:21,400 Oh! 471 00:23:22,400 --> 00:23:24,400 Look at that, puppy. 472 00:23:24,400 --> 00:23:26,400 Boom! 473 00:23:26,400 --> 00:23:30,400 Behold, I am the master of the sun! 474 00:23:30,400 --> 00:23:37,400 Adam's humongous light source gives a whopping 160,000 lux at 50 feet. 475 00:23:37,400 --> 00:23:41,400 That is frickin' awesome. 476 00:23:41,400 --> 00:23:45,400 But will it be bright enough to eliminate their colossal crypt? 477 00:23:45,400 --> 00:23:46,400 I think that's right. 478 00:23:46,400 --> 00:23:49,400 To find out, the guys will shine in Adam's sun, 479 00:23:49,400 --> 00:23:52,400 position the mirrors, and then check the light reading. 480 00:23:52,400 --> 00:23:56,400 Starting now, house lights out. 481 00:23:58,400 --> 00:23:59,400 Shall we bring in the sun? 482 00:23:59,400 --> 00:24:00,400 Sure, why not? 483 00:24:00,400 --> 00:24:02,400 Let's bring in the first sunbeam. 484 00:24:05,400 --> 00:24:06,400 Alright, you ready for it? 485 00:24:06,400 --> 00:24:08,400 I'm ready for it, bring it on. 486 00:24:08,400 --> 00:24:09,400 Okay, here it comes. 487 00:24:10,400 --> 00:24:11,400 There it is. 488 00:24:11,400 --> 00:24:17,400 Just like the movie, they're using six mirrors, all of which are around 35 feet apart. 489 00:24:17,400 --> 00:24:18,400 Doink! 490 00:24:18,400 --> 00:24:19,400 Man, that's bright. 491 00:24:19,400 --> 00:24:22,400 Dude, that is like a two-foot laser beam. 492 00:24:22,400 --> 00:24:24,400 Going for mirror number four. 493 00:24:25,400 --> 00:24:26,400 Nice. 494 00:24:27,400 --> 00:24:28,400 Alright, there it is. 495 00:24:28,400 --> 00:24:29,400 That's as good as it gets. 496 00:24:31,400 --> 00:24:32,400 Going for the last mirror. 497 00:24:32,400 --> 00:24:34,400 Okay, coming down. 498 00:24:34,400 --> 00:24:35,400 Zoop! 499 00:24:36,400 --> 00:24:37,400 That's it, you're in. 500 00:24:39,400 --> 00:24:40,400 Ta-da! 501 00:24:41,400 --> 00:24:42,400 And there we go. 502 00:24:44,400 --> 00:24:45,400 That works pretty good. 503 00:24:45,400 --> 00:24:48,400 I swear, I'm gonna go out on a limb and say this room is nicely lit. 504 00:24:49,400 --> 00:24:52,400 I can move through the antiques without hurting anything. 505 00:24:52,400 --> 00:24:53,400 Easily. 506 00:24:53,400 --> 00:24:58,400 Look, nobody can say that we didn't accurately match the look and behavior of this technique in the film. 507 00:24:58,400 --> 00:25:00,400 Yep, looks just like the tune. 508 00:25:01,400 --> 00:25:05,400 It's a good start, but what does the all-important data say? 509 00:25:05,400 --> 00:25:06,400 Alright, let's take a reading. 510 00:25:08,400 --> 00:25:09,400 Okay, I got it. 511 00:25:10,400 --> 00:25:12,400 Well, it turns out that bigger is absolutely better. 512 00:25:12,400 --> 00:25:18,400 Going full-scale with our mirrors is yielding an ambient light reading in this room of 2.3 lux. 513 00:25:18,400 --> 00:25:23,400 And when you're in this room, you can totally carefully make your way among the artifacts without any difficulty at all. 514 00:25:23,400 --> 00:25:29,400 By both an objective and an empirical standard, the theory behind this technique is totally sound. 515 00:25:30,400 --> 00:25:35,400 In fact, it's over five times brighter than the minimum level they determined earlier. 516 00:25:35,400 --> 00:25:39,400 And that's very good news for the myth, except for one little thing. 517 00:25:41,400 --> 00:25:47,400 Going full-scale and using an artificial light source, we were able to very closely replicate what we saw in the movie. 518 00:25:47,400 --> 00:25:50,400 But this story is about using the sun. 519 00:25:53,400 --> 00:25:58,400 Jamie's right, but luckily, the long-lost suns finally put in a show. 520 00:25:58,400 --> 00:26:00,400 So, let there be light. 521 00:26:00,400 --> 00:26:09,400 The question is, will it be enough light for an archeologist such as me or Mr. Heineman to be able to move through a tomb without breaking anything? 522 00:26:09,400 --> 00:26:13,400 Coming right up, it's Runway Runaway Motor Mayhem. 523 00:26:17,400 --> 00:26:26,400 Can you really bring an out-of-control car to a stop with a dangerous game of bumper cars? 524 00:26:26,400 --> 00:26:27,400 So far so good. 525 00:26:27,400 --> 00:26:31,400 Yeah, it turns out you can slow down a coasting car using this technique. 526 00:26:31,400 --> 00:26:33,400 But now, I think it's time to ramp things up. 527 00:26:33,400 --> 00:26:37,400 By seeing what happens when the driver has their foot jammed on the accelerator. 528 00:26:37,400 --> 00:26:43,400 This is going to be a whole other experience, because now that the accelerator is stuck, this car is not going to want to stop. 529 00:26:43,400 --> 00:26:47,400 So, back at Alameda Runway, it's pedal to the metal, literally. 530 00:26:47,400 --> 00:26:53,400 And for that, Tori's going green, because this time, he's doing the rescuing. 531 00:26:53,400 --> 00:26:56,400 Alright, time to go save some lives. Hope they don't wreck my paint job. 532 00:26:56,400 --> 00:27:00,400 This time, he's going for a highway high speed. 533 00:27:00,400 --> 00:27:08,400 For this next test, what I'm being asked to do is to depress the accelerator as if it is stuck, and then take my hands off the wheel. 534 00:27:08,400 --> 00:27:11,400 At no time should I take my foot off the accelerator. 535 00:27:11,400 --> 00:27:14,400 Totally counterintuitive and kind of scary. 536 00:27:15,400 --> 00:27:21,400 We're about to stop a car going 75 miles an hour out of control with another car. 537 00:27:21,400 --> 00:27:24,400 Buckle up. It's about to get real. 538 00:27:24,400 --> 00:27:27,400 In three, two, one, go! 539 00:27:28,400 --> 00:27:37,400 With both cars accelerating to 75, carry again, let's go with the wheel, but keeps her foot on the gas. 540 00:27:37,400 --> 00:27:39,400 Looks like those guys are out of control. 541 00:27:40,400 --> 00:27:45,400 Tori gets in position and then starts pumping the brakes. 542 00:27:50,400 --> 00:27:58,400 At this speed, the cars rapidly head off course, with the fence getting ever closer. 543 00:27:59,400 --> 00:28:03,400 Tori's wheels lock up and he veers off. 544 00:28:04,400 --> 00:28:08,400 Fortunately, he recovers just in time. 545 00:28:09,400 --> 00:28:12,400 That was hair ball. 546 00:28:12,400 --> 00:28:16,400 I had both feet on the brakes and I still wasn't stopping. 547 00:28:16,400 --> 00:28:19,400 We were getting closer and closer to the gate. 548 00:28:19,400 --> 00:28:21,400 I was like, oh man. 549 00:28:21,400 --> 00:28:23,400 I was like, oh, I'm going to push him through the fence. 550 00:28:23,400 --> 00:28:30,400 Without doubt, it was the hardest rescue yet as Tori's smoking tires attest, but he did pull it off. 551 00:28:31,400 --> 00:28:37,400 What I think we learned from this though is that you can stop a car even going 70 miles an hour. 552 00:28:37,400 --> 00:28:42,400 Unless we're going to do this whole thing at 100 miles an hour, I think we have to call it. 553 00:28:42,400 --> 00:28:44,400 This one is confirmed. 554 00:28:44,400 --> 00:28:45,400 Totally confirmed. 555 00:28:45,400 --> 00:28:46,400 Confirmed. 556 00:28:46,400 --> 00:28:51,400 Confirmed it is, but not something you should try at home. 557 00:28:52,400 --> 00:28:59,400 Now, most people would call it quits, but Carrie's got an appetite for more. 558 00:28:59,400 --> 00:29:04,400 So this rescue myth has reminded me of a technique I've heard of that I've always wanted to try, 559 00:29:04,400 --> 00:29:08,400 where you actually can sandwich a car with two cars to slow it down. 560 00:29:08,400 --> 00:29:12,400 Oh, so they wedge the runway car and use friction to bring it to a stop. 561 00:29:12,400 --> 00:29:13,400 A car sandwich. 562 00:29:13,400 --> 00:29:14,400 That sounds dangerous. 563 00:29:14,400 --> 00:29:15,400 I love it. 564 00:29:16,400 --> 00:29:22,400 So, hunger and for more action, Grant and Tori are about to put the squeeze on Carrie's car. 565 00:29:23,400 --> 00:29:28,400 So we show that it's possible to stop an out of control car with another car. 566 00:29:28,400 --> 00:29:34,400 But now we're back to the Alameda runway, and this time we're going to try to stop an out of control car with two cars. 567 00:29:34,400 --> 00:29:36,400 We're making a car sandwich. 568 00:29:36,400 --> 00:29:41,400 Basically, this thing we're about to do right here, this is the most dangerous thing we're going to do all week. 569 00:29:41,400 --> 00:29:47,400 You heard right, if they overcook this sandwich maneuver, Carrie's toast. 570 00:29:47,400 --> 00:29:54,400 So far I've been able to handle this, but I noticed that I put my seatbelts on just a little bit tighter for this one. 571 00:29:54,400 --> 00:29:56,400 In three, two, one. 572 00:29:56,400 --> 00:30:00,400 Most sane people would see this as a seriously crazy thing to try. 573 00:30:00,400 --> 00:30:06,400 Carrie driving with stuck accelerator, no hands at silly speed, and they'd be right. 574 00:30:06,400 --> 00:30:11,400 There's a real danger here of one, two, or all three cars rolling. 575 00:30:11,400 --> 00:30:15,400 Grant and Tori pull alongside, move closer, and... 576 00:30:19,400 --> 00:30:21,400 Well, you can see the result. 577 00:30:24,400 --> 00:30:26,400 Oh my God, it worked! 578 00:30:28,400 --> 00:30:29,400 Oh my gosh! 579 00:30:30,400 --> 00:30:31,400 It worked! 580 00:30:31,400 --> 00:30:35,400 It was ugly, but I think it worked. 581 00:30:35,400 --> 00:30:38,400 We stopped an out of control car with two cars. 582 00:30:38,400 --> 00:30:40,400 Oh my God, it's working! 583 00:30:40,400 --> 00:30:41,400 I would have to say that's working. 584 00:30:41,400 --> 00:30:44,400 It definitely was successful in stopping the car. 585 00:30:44,400 --> 00:30:47,400 Man, I think we could do this better. 586 00:30:47,400 --> 00:30:50,400 I mean, this was super clumsy. 587 00:30:55,400 --> 00:31:02,400 And having survived that rescue, Carrie's throwing down the gauntlet for a custom built challenge. 588 00:31:03,400 --> 00:31:08,400 Why don't you guys figure out a better way to stop the out of control vehicle? 589 00:31:08,400 --> 00:31:12,400 What if both of you go off and come up with your own ways to stop the car, 590 00:31:12,400 --> 00:31:16,400 and I'll give you a challenge as a really out of control vehicle? 591 00:31:16,400 --> 00:31:18,400 You like being out of control, don't you? 592 00:31:18,400 --> 00:31:22,400 Next up, we'll Tuts Toom Ever See Daylight. 593 00:31:22,400 --> 00:31:24,400 That is intense. 594 00:31:25,400 --> 00:31:35,400 Back on Treasure Island, the San Francisco Sun is finally smiling on Jamie and Adam's test setup. 595 00:31:35,400 --> 00:31:36,400 I'm in the door. 596 00:31:36,400 --> 00:31:43,400 Meaning they can finally attempt a real world test using their large tomb and the real sun. 597 00:31:43,400 --> 00:31:44,400 Yeah, baby! 598 00:31:44,400 --> 00:31:49,400 The problem is, unlike all their other tests, they can't just point the sun straight inside. 599 00:31:49,400 --> 00:31:51,400 I think we're set. Should we bring in the sun? 600 00:31:51,400 --> 00:31:53,400 Let's bring it in. 601 00:31:53,400 --> 00:31:55,400 Okay, house lights out. 602 00:31:55,400 --> 00:32:01,400 Instead, they have to bounce it in, courtesy of a primary mirror outside. 603 00:32:01,400 --> 00:32:03,400 Wow, look at that. 604 00:32:03,400 --> 00:32:05,400 I'm gonna go for the first mirror. 605 00:32:05,400 --> 00:32:06,400 Okay. 606 00:32:06,400 --> 00:32:09,400 But once that's sorted, that is intense. 607 00:32:09,400 --> 00:32:11,400 You've got a beam in the room. 608 00:32:11,400 --> 00:32:12,400 Here I am. 609 00:32:12,400 --> 00:32:13,400 Here it comes. 610 00:32:13,400 --> 00:32:17,400 It's then back to the tricky task of aligning all the mirrors. 611 00:32:19,400 --> 00:32:22,400 Okay, that's pretty good. 612 00:32:22,400 --> 00:32:23,400 Look at that. 613 00:32:23,400 --> 00:32:24,400 It's actually working. 614 00:32:24,400 --> 00:32:25,400 One by one. 615 00:32:25,400 --> 00:32:27,400 Going for mirror two. 616 00:32:27,400 --> 00:32:28,400 Oh, right. 617 00:32:28,400 --> 00:32:29,400 Mirror two. 618 00:32:29,400 --> 00:32:31,400 Until the end target is lit. 619 00:32:31,400 --> 00:32:32,400 Mirror three. 620 00:32:34,400 --> 00:32:35,400 Ah. 621 00:32:35,400 --> 00:32:36,400 There we go. 622 00:32:36,400 --> 00:32:37,400 That's beautiful. 623 00:32:37,400 --> 00:32:40,400 All right, I'm gonna bring it in on our last target. 624 00:32:41,400 --> 00:32:43,400 And there it is. 625 00:32:44,400 --> 00:32:45,400 Ha ha, perfect. 626 00:32:45,400 --> 00:32:47,400 That is fantastic. 627 00:32:48,400 --> 00:32:49,400 This is the best yet. 628 00:32:49,400 --> 00:32:51,400 I can totally see things in here. 629 00:32:52,400 --> 00:32:54,400 But what are the lux levels? 630 00:32:54,400 --> 00:32:57,400 2.51 lux. 631 00:32:57,400 --> 00:32:58,400 That's amazing. 632 00:32:58,400 --> 00:32:59,400 That's really bright. 633 00:32:59,400 --> 00:33:03,400 They've cracked it six times brighter than the minimum eye level. 634 00:33:03,400 --> 00:33:06,400 Enough to put a smile on Adam's dial. 635 00:33:06,400 --> 00:33:07,400 Well, briefly. 636 00:33:07,400 --> 00:33:08,400 We're losing our beam. 637 00:33:08,400 --> 00:33:09,400 Yeah, we are. 638 00:33:09,400 --> 00:33:11,400 You know what the problem is. 639 00:33:11,400 --> 00:33:12,400 What? 640 00:33:12,400 --> 00:33:13,400 The sun's moving. 641 00:33:13,400 --> 00:33:16,400 The relationships have all changed a little bit, Jimmy. 642 00:33:16,400 --> 00:33:17,400 Have they? 643 00:33:17,400 --> 00:33:18,400 Yeah. 644 00:33:18,400 --> 00:33:20,400 The sun's moved off the primary, 645 00:33:20,400 --> 00:33:23,400 which means the aim on the secondary is a little bit off. 646 00:33:23,400 --> 00:33:26,400 As the sun moves off the primary mirror, 647 00:33:26,400 --> 00:33:28,400 it kicks all the others out of kilter. 648 00:33:28,400 --> 00:33:29,400 And the sun's moved again. 649 00:33:29,400 --> 00:33:30,400 I'm gonna kick the primary one more time. 650 00:33:30,400 --> 00:33:31,400 Okay. 651 00:33:31,400 --> 00:33:33,400 And for lighting up a tomb, 652 00:33:33,400 --> 00:33:35,400 that is a problem. 653 00:33:35,400 --> 00:33:39,400 The thing about using the sun is that the earth is rotating on its axis, 654 00:33:39,400 --> 00:33:41,400 and it's also rotating around the sun, 655 00:33:41,400 --> 00:33:44,400 which means that from our perspective, 656 00:33:44,400 --> 00:33:47,400 the sun is moving all over the place across the sky. 657 00:33:47,400 --> 00:33:50,400 So you can't really expect to be able to aim a beam of light 658 00:33:50,400 --> 00:33:53,400 using a mirror at a specific spot 659 00:33:53,400 --> 00:33:57,400 without constantly adjusting it to accommodate for the sun's movement. 660 00:33:57,400 --> 00:33:59,400 And its movement is surprisingly fast. 661 00:33:59,400 --> 00:34:02,400 With this much distance on these mirrors, 662 00:34:02,400 --> 00:34:05,400 the amount the sun's moving on the last one is like inches per minute. 663 00:34:05,400 --> 00:34:09,400 Well, it works, but only for about three minutes at a time before the sun moves. 664 00:34:09,400 --> 00:34:10,400 The mirrors are static. 665 00:34:10,400 --> 00:34:13,400 They don't move dynamically, but the sun does. 666 00:34:13,400 --> 00:34:15,400 And as the sun moves through the sky, 667 00:34:15,400 --> 00:34:17,400 it changes its geometry on the primary mirror, 668 00:34:17,400 --> 00:34:20,400 which changes the geometry on all the other mirrors in this room. 669 00:34:20,400 --> 00:34:24,400 They'd have to be moved dynamically throughout the whole thing to keep this room lit. 670 00:34:24,400 --> 00:34:30,400 So because of that, I don't feel like we've really seen the theory behind this technique work as well as it could. 671 00:34:30,400 --> 00:34:34,400 Yep, and that's something that didn't happen in the movie. 672 00:34:34,400 --> 00:34:36,400 But before the sun sets on this myth, 673 00:34:36,400 --> 00:34:39,400 Jamie's got one little trick up his sleeve. 674 00:34:40,400 --> 00:34:44,080 The 675 00:34:44,400 --> 00:34:47,400 Carrie Grant and Tori have confirmed the myth. 676 00:34:47,400 --> 00:34:53,400 You can stop an out-of-control car with another, with brake and bumper technique, 677 00:34:56,400 --> 00:34:59,400 plus that crazy sandwich combo. 678 00:35:01,400 --> 00:35:07,400 Now, Carrie set the boys a challenge to come up with that custom-built device to stop a car. 679 00:35:07,400 --> 00:35:09,400 I'm in speed. 680 00:35:09,400 --> 00:35:13,400 Challenge. Ah, such a nice ring to it. 681 00:35:14,400 --> 00:35:17,400 So with a mix of metal and midnight oil later, 682 00:35:17,400 --> 00:35:18,400 Perfect. 683 00:35:18,400 --> 00:35:22,400 They come up with a typical ingenious myth buster solution. 684 00:35:22,400 --> 00:35:23,400 Yeah. 685 00:35:23,400 --> 00:35:26,400 Now they're ready to reveal all. 686 00:35:26,400 --> 00:35:28,400 Come on, you guys, try and stop me. 687 00:35:28,400 --> 00:35:30,400 Grant first. 688 00:35:31,400 --> 00:35:36,400 To address Carrie's challenge to come up with a better way to stop a car, I have this. 689 00:35:37,400 --> 00:35:40,400 These paddles mount underneath the front bumper of each car. 690 00:35:40,400 --> 00:35:49,400 Employing the sandwich technique will come in and they will allow us to control the runaway car and bring it to a safe stop. 691 00:35:49,400 --> 00:35:51,400 All right. 692 00:35:51,400 --> 00:35:54,400 See, the other car's bumper comes in like this. 693 00:35:54,400 --> 00:36:00,400 We don't have to get so far in front so there's no chance of spinning out. 694 00:36:00,400 --> 00:36:04,400 Then we just lock you in with the L shape and slow you down. 695 00:36:04,400 --> 00:36:06,400 Sounds good on paper. 696 00:36:06,400 --> 00:36:10,400 Sounds bad when that's through the grill of the car. 697 00:36:10,400 --> 00:36:18,400 As for Tori's approach, all you need to do is get your car going really fast and then rear in the car that's out of control. 698 00:36:18,400 --> 00:36:22,400 The whole idea here is that you harpoon the car in front of you. 699 00:36:22,400 --> 00:36:26,400 Once you are inside the car, you release that hook. 700 00:36:26,400 --> 00:36:29,400 Really? This is your idea? 701 00:36:29,400 --> 00:36:32,400 It might give you whiplash, but it should stop your car. 702 00:36:32,400 --> 00:36:35,400 Your idea of a safe stop is to shank me? 703 00:36:35,400 --> 00:36:37,400 More like harpooning. 704 00:36:37,400 --> 00:36:40,400 Next, custom built car craziness. 705 00:36:40,400 --> 00:36:43,400 Nothing about it seems like a good idea. 706 00:36:59,400 --> 00:37:01,400 Ready to drive. 707 00:37:01,400 --> 00:37:03,400 3, 2, 1, go. 708 00:37:05,400 --> 00:37:08,400 France ingeniously bolted bars to the front of each car. 709 00:37:08,400 --> 00:37:09,400 Tori? 710 00:37:09,400 --> 00:37:11,400 Here they come. 711 00:37:11,400 --> 00:37:15,400 To act like a barrier to stop Carrie's car. 712 00:37:15,400 --> 00:37:18,400 Now it may look crazy. 713 00:37:23,400 --> 00:37:25,400 But it's blitz the job. 714 00:37:29,400 --> 00:37:31,400 Gotcha. 715 00:37:31,400 --> 00:37:33,400 Woo! 716 00:37:33,400 --> 00:37:35,400 That was beautiful. 717 00:37:35,400 --> 00:37:38,400 That worked so much better than the original sandwich. 718 00:37:38,400 --> 00:37:41,400 Oh my God. We totally got you. 719 00:37:41,400 --> 00:37:43,400 That was awesome. 720 00:37:43,400 --> 00:37:45,400 Grant, your method is safer. 721 00:37:45,400 --> 00:37:46,400 Nice work. 722 00:37:46,400 --> 00:37:47,400 Thanks. 723 00:37:47,400 --> 00:37:49,400 Now if we can only get the cars apart. 724 00:37:49,400 --> 00:37:51,400 Are we going to have to drive from home like this? 725 00:37:51,400 --> 00:37:58,400 I get to a constant speed, take my hands off the wheel and watch the cars on either side of me. 726 00:37:58,400 --> 00:38:01,400 Start to close in very, very quickly. 727 00:38:01,400 --> 00:38:04,400 They slam at the same time. 728 00:38:04,400 --> 00:38:10,400 My bumper hits the front pedals and they actually are slowing me down. 729 00:38:10,400 --> 00:38:14,400 I smell rubber burning, but I'm coming to a stop. 730 00:38:14,400 --> 00:38:16,400 It's amazing. 731 00:38:16,400 --> 00:38:21,400 And if that wasn't scary enough, then there's the harpoon. 732 00:38:21,400 --> 00:38:23,400 This is a new technique. 733 00:38:23,400 --> 00:38:31,400 This is more of a stabbing, hooking, and then using the weight of the vehicle to slow the out of control car down. 734 00:38:31,400 --> 00:38:35,400 This plan? Nothing about it seems like a good idea. 735 00:38:35,400 --> 00:38:39,400 Harpooning the back of my car, ramming it as hard as you can. 736 00:38:39,400 --> 00:38:43,400 Who comes up with this kind of idea? Only a crazy person. 737 00:38:43,400 --> 00:38:46,400 Think we're set? 738 00:38:46,400 --> 00:38:48,400 It's a simple plan. 739 00:38:48,400 --> 00:38:53,400 Get up behind Carrie's car, crash into the trunk, slam on your brakes. 740 00:38:53,400 --> 00:38:55,400 What could possibly go wrong? 741 00:38:55,400 --> 00:38:58,400 Three, two, one, go. 742 00:39:02,400 --> 00:39:06,400 The Runway Road Warrior sets out, ready to rescue. 743 00:39:06,400 --> 00:39:10,400 This is Tori and Grant in Harpoon Rescue, in pursuit. 744 00:39:10,400 --> 00:39:13,400 Okay, hands off the wheel. Go for it, man. 745 00:39:15,400 --> 00:39:17,400 Here we go. 746 00:39:19,400 --> 00:39:22,400 Carrie's car is skewed. 747 00:39:22,400 --> 00:39:26,400 Now on the sophistication scale, it's crafting. 748 00:39:26,400 --> 00:39:29,400 As for the all-important results rating, it's a hit. 749 00:39:29,400 --> 00:39:31,400 Working! 750 00:39:31,400 --> 00:39:33,400 Working! 751 00:39:33,400 --> 00:39:34,400 Nice! 752 00:39:34,400 --> 00:39:36,400 But it's working! 753 00:39:36,400 --> 00:39:38,400 Nice! 754 00:39:39,400 --> 00:39:41,400 Good job! 755 00:39:41,400 --> 00:39:43,400 I can't believe that worked! 756 00:39:43,400 --> 00:39:44,400 The rear spare! 757 00:39:44,400 --> 00:39:46,400 Dude, that's awesome! 758 00:39:46,400 --> 00:39:48,400 It stopped the car out of control! 759 00:39:48,400 --> 00:39:51,400 Okay, we're going to have to take both of these ideas and patent them, 760 00:39:51,400 --> 00:39:54,400 so that we can sell them back to the Highway Patrol, because that's amazing. 761 00:39:54,400 --> 00:39:58,400 I think there's some law enforcement people that would be very interested in talking to us. 762 00:39:59,400 --> 00:40:02,400 The Harpoon Technique worked. Carrie took off at 50 miles an hour. 763 00:40:02,400 --> 00:40:06,400 I caught up with her. It didn't take much to punch through the back of her car. 764 00:40:06,400 --> 00:40:08,400 And it both get... 765 00:40:10,400 --> 00:40:12,400 I came to a stop, she came to a stop. 766 00:40:12,400 --> 00:40:14,400 Yeah! 767 00:40:14,400 --> 00:40:18,400 I have to say that stopping a car with another car has been very successful. 768 00:40:18,400 --> 00:40:21,400 We've gotten in front of the Runaway car and applied our brakes, 769 00:40:21,400 --> 00:40:25,400 and safely stopped it at speeds and access of 70 miles per hour. 770 00:40:25,400 --> 00:40:30,400 We've come up to the side, sandwiched the car, using plates welded to our front bumpers, 771 00:40:30,400 --> 00:40:35,400 and finally we've deployed a crazy, Harpoon-like spear 772 00:40:35,400 --> 00:40:40,400 to punch into the trunk of the Runaway car and drag it to a stop. 773 00:40:40,400 --> 00:40:44,400 Just goes to show, if you have a Runaway car, call the Mythbusters. 774 00:40:45,400 --> 00:40:47,400 Actually, no, you should call the police. 775 00:40:54,400 --> 00:40:59,400 Back at Tut HQ on Treasure Island, Jamie's not quite done testing lux levels. 776 00:40:59,400 --> 00:41:02,400 There's one other thing I'd like to try. You're gonna like it. 777 00:41:02,400 --> 00:41:04,400 Alright, let's do it. 778 00:41:04,400 --> 00:41:09,400 In their earlier small-scale tests, Jamie made an ambient light level breakthrough. 779 00:41:09,400 --> 00:41:13,400 The goal of all this is to raise the ambient light level in a room, 780 00:41:13,400 --> 00:41:16,400 and mirrors alone aren't gonna cut it. 781 00:41:16,400 --> 00:41:18,400 That light needs to hit something that scatters it. 782 00:41:18,400 --> 00:41:22,400 So now, in their full-sized, sunlit tomb, 783 00:41:22,400 --> 00:41:25,400 he's itching to see if this scatter theory will scale. 784 00:41:25,400 --> 00:41:28,400 Turn off your headlamp and check this out. 785 00:41:32,400 --> 00:41:33,400 That's beautiful! 786 00:41:33,400 --> 00:41:35,400 And you thought I didn't know how to light up a room. 787 00:41:35,400 --> 00:41:38,400 I stand corrected. Let's take a reading. 788 00:41:40,400 --> 00:41:42,400 Okay, maximum. 789 00:41:45,400 --> 00:41:46,400 Alright, moving away. 790 00:41:47,400 --> 00:41:50,400 Average lux, 8.62 lux. 791 00:41:51,400 --> 00:41:53,400 Woo for Jamie's shirt. 792 00:41:53,400 --> 00:41:56,400 Amazingly, with this reflective scattering, 793 00:41:56,400 --> 00:42:01,400 Jamie's whiter-than-white shirt has given the maximum light reading for the entire experiment. 794 00:42:01,400 --> 00:42:03,400 Adam's gobsmacked. 795 00:42:03,400 --> 00:42:07,400 Well, it turns out that Jamie's starched white shirt provides almost three times 796 00:42:07,400 --> 00:42:14,400 as much ambient light in this space as the next best technique of everything that we've tried. 797 00:42:14,400 --> 00:42:16,400 And Jamie's reaction? 798 00:42:16,400 --> 00:42:18,400 Well, this is Jamie. 799 00:42:18,400 --> 00:42:22,400 A mirrored surface is gonna be your best bet to get light into a room because it's very directional. 800 00:42:22,400 --> 00:42:26,400 But if you want to actually light the room, once that light gets in there, 801 00:42:26,400 --> 00:42:29,400 you're best off if it hits a surface like my white shirt, 802 00:42:29,400 --> 00:42:35,400 because the white isn't so directional, it's gonna spread the light and raise your ambient light level. 803 00:42:35,400 --> 00:42:37,400 How do you want to wrap this up? 804 00:42:39,400 --> 00:42:45,400 In theory, it's plausible, because the sun's rays did in fact provide enough ambient light to move around the room. 805 00:42:45,400 --> 00:42:49,400 I agree. Plausible, but totally impractical. 806 00:42:49,400 --> 00:42:54,400 First of all, the sun moves, so you only get that light for about three and a half minutes before it's to shift everything. 807 00:42:54,400 --> 00:43:01,400 And the idea that all those mirrors would sit around for 3,000 years and be ready to light up that room, totally ridiculous. 808 00:43:01,400 --> 00:43:04,400 Yeah, plausible, but ridiculous.