1 00:00:00,000 --> 00:00:02,000 Give us a break. 2 00:00:02,000 --> 00:00:05,000 Don't try what you're about to see at home. 3 00:01:01,000 --> 00:01:03,000 Who are the Mythbusters? 4 00:01:03,000 --> 00:01:05,000 Adam Savage 5 00:01:05,000 --> 00:01:06,000 Dangerous Mind 6 00:01:06,000 --> 00:01:07,000 Middle-Mine 7 00:01:07,000 --> 00:01:08,000 and Jamie Heidemann 8 00:01:08,000 --> 00:01:11,000 The behavior we're going to make you into a coat. 9 00:01:11,000 --> 00:01:15,000 Between them, over 30 years, special effects experience. 10 00:01:17,000 --> 00:01:18,000 Joining them, 11 00:01:18,000 --> 00:01:19,000 Tori Balechi 12 00:01:19,000 --> 00:01:21,000 Bang in the bang in the bang 13 00:01:21,000 --> 00:01:22,000 Carrie Byron 14 00:01:22,000 --> 00:01:23,000 Don't try what you're about to see at home. 15 00:01:23,000 --> 00:01:24,000 and Grant Imahara 16 00:01:24,000 --> 00:01:26,000 He's alive! 17 00:01:26,000 --> 00:01:29,000 They don't just tell the myths. 18 00:01:29,000 --> 00:01:31,000 They took them to the test. 19 00:01:46,000 --> 00:01:48,000 What's the myth? 20 00:01:48,000 --> 00:01:50,000 Quite simply, it's that you can extinguish a fire 21 00:01:50,000 --> 00:01:52,000 using only the power of a human voice. 22 00:01:52,000 --> 00:01:53,000 You're making that up. 23 00:01:53,000 --> 00:01:54,000 I am not. 24 00:01:54,000 --> 00:01:58,000 It actually comes from an early 20th century naturalist named Charles Kellogg 25 00:01:58,000 --> 00:02:01,000 who claimed foreign wine that he could put out fires 26 00:02:01,000 --> 00:02:03,000 using only his voice. 27 00:02:03,000 --> 00:02:05,000 And didn't he also invent cereal or something? 28 00:02:05,000 --> 00:02:06,000 No, wrong guy. 29 00:02:06,000 --> 00:02:10,000 Charles Kellogg, unlike the cereal guy, was a vocal genius. 30 00:02:10,000 --> 00:02:15,000 In the early 1900s, he traveled the states in a hollow redwood tree 31 00:02:15,000 --> 00:02:18,000 and wowed audiences with his bird impersonations 32 00:02:18,000 --> 00:02:21,000 which could supposedly put out fires. 33 00:02:23,000 --> 00:02:26,000 He claimed he could do this not with his exhale breath 34 00:02:26,000 --> 00:02:29,000 but with the sound waves themselves. 35 00:02:29,000 --> 00:02:33,000 As sound travels through air, it creates pressure waves. 36 00:02:33,000 --> 00:02:36,000 These pressure waves can cause air molecules to vibrate 37 00:02:36,000 --> 00:02:41,000 and if they vibrate enough, a flame can apparently be blown out. 38 00:02:41,000 --> 00:02:43,000 Do we have a plan? 39 00:02:43,000 --> 00:02:45,000 Well, I think we have a reasonable plan. 40 00:02:45,000 --> 00:02:47,000 Kellogg claimed he could put out a fire with his voice 41 00:02:47,000 --> 00:02:49,000 and he demonstrated it. 42 00:02:49,000 --> 00:02:52,000 We should find out how, replicate that demonstration 43 00:02:52,000 --> 00:02:53,000 and see what we get. 44 00:02:53,000 --> 00:02:54,000 Okay. 45 00:02:54,000 --> 00:02:59,000 What I have here are the rudiments of Kellogg's exact experimental setup 46 00:02:59,000 --> 00:03:02,000 for using his voice to extinguish fire. 47 00:03:02,000 --> 00:03:06,000 It consists of gas feeding into a chamber that has a membrane on it 48 00:03:06,000 --> 00:03:11,000 and the membrane moves in relation to the sound in the room 49 00:03:11,000 --> 00:03:13,000 and affects the pressure of the fire. 50 00:03:13,000 --> 00:03:15,000 You can see as I'm talking, the fire is moving 51 00:03:15,000 --> 00:03:17,000 and it doesn't have to do with my breath, 52 00:03:17,000 --> 00:03:19,000 it has to do with the sound of my voice. 53 00:03:19,000 --> 00:03:22,000 With the so-called sensitive flame fired up, 54 00:03:22,000 --> 00:03:29,000 Adams got a copy of a 1905 gramophone recording of Kellogg singing like a bird. 55 00:03:29,000 --> 00:03:31,000 Alright, here's a little history. 56 00:03:31,000 --> 00:03:37,000 His human voice was analyzed and found to be normal under 4,000 Hz. 57 00:03:37,000 --> 00:03:43,000 However, his bird voice soared into the inaudible above 14,000 Hz. 58 00:03:43,000 --> 00:03:46,000 His voice reputedly had a range of 12 and 1 half octaves 59 00:03:46,000 --> 00:03:51,000 while the normal range of a singing voice is just 2 and 1 half. 60 00:03:51,000 --> 00:03:53,000 We will see. 61 00:03:59,000 --> 00:04:01,000 Kellogg's bird voice is astonishing. 62 00:04:01,000 --> 00:04:05,000 I don't care whether he's whistling or grabbing his neck and doing this or whatever. 63 00:04:05,000 --> 00:04:08,000 The comes out of a person is amazing. 64 00:04:08,000 --> 00:04:12,000 The high-frequency bird voice makes the flame go ballistic, 65 00:04:12,000 --> 00:04:14,000 but extinguished it ain't. 66 00:04:14,000 --> 00:04:17,000 That's kind of spooky actually. 67 00:04:17,000 --> 00:04:19,000 Isn't it? 68 00:04:19,000 --> 00:04:24,000 There's a specific bird call of Kellogg's 69 00:04:24,000 --> 00:04:29,000 that makes the flame do the largest differential dance. 70 00:04:29,000 --> 00:04:31,000 Bango, bango, bango, bango, like that. 71 00:04:31,000 --> 00:04:35,000 Is he saying red rum? 72 00:04:35,000 --> 00:04:39,000 Despite their lack of success, all is not lost. 73 00:04:39,000 --> 00:04:44,000 It's possible that Adams' CD of a recording made over a hundred years ago 74 00:04:44,000 --> 00:04:47,000 is simply not good enough quality. 75 00:04:48,000 --> 00:04:52,000 I'm going to try to put this flame out using my dog voice. 76 00:04:52,000 --> 00:04:54,000 So to keep testing this myth, 77 00:04:54,000 --> 00:04:58,000 the voice must come up with a way of replicating Kellogg's full vocal range 78 00:04:58,000 --> 00:05:00,000 before Adam goes barking mad. 79 00:05:03,000 --> 00:05:05,000 Now my dog voice doesn't work. 80 00:05:05,000 --> 00:05:09,000 MUSIC 81 00:05:09,000 --> 00:05:14,000 MUSIC 82 00:05:14,000 --> 00:05:16,000 Look into my eyes. 83 00:05:16,000 --> 00:05:17,000 Deeper. 84 00:05:17,000 --> 00:05:19,000 You will fall into a deep, deep sleep. 85 00:05:19,000 --> 00:05:21,000 What are you doing? 86 00:05:21,000 --> 00:05:22,000 Trying to hypnotize Grant. 87 00:05:22,000 --> 00:05:23,000 Why? 88 00:05:23,000 --> 00:05:26,000 We're working on hypnosis myths. 89 00:05:26,000 --> 00:05:31,000 Hypnosis has long sparked a spiral of myths about its so-called powers. 90 00:05:31,000 --> 00:05:35,000 Myths that are about to get the myth busters treatment, 91 00:05:35,000 --> 00:05:38,000 starting with an all-time classic. 92 00:05:39,000 --> 00:05:43,000 An evil hypnotist can plant a post-hypnotic suggestion 93 00:05:43,000 --> 00:05:46,000 that forces you to do something against your will. 94 00:05:46,000 --> 00:05:49,000 You mean like in the movies when there's like a sleeper agent 95 00:05:49,000 --> 00:05:52,000 and they give him a code word and he wakes them up and he kills people? 96 00:05:52,000 --> 00:05:53,000 Exactly. 97 00:05:53,000 --> 00:05:55,000 So we probably won't kill people. 98 00:05:57,000 --> 00:05:59,000 Who is the most effective assassin? 99 00:05:59,000 --> 00:06:05,000 Well, I would think anyone who manages to conceal his identity as an assassin. 100 00:06:05,000 --> 00:06:08,000 One who doesn't know is an assassin. 101 00:06:08,000 --> 00:06:11,000 It's another mad movie plot line. 102 00:06:11,000 --> 00:06:14,000 An evil villain uses hypnosis to plant a trigger 103 00:06:14,000 --> 00:06:17,000 that turns an ordinary person into the perfect assassin 104 00:06:17,000 --> 00:06:19,000 without them even knowing. 105 00:06:22,000 --> 00:06:24,000 I must kill Papshbir. 106 00:06:24,000 --> 00:06:26,000 Papshbir. 107 00:06:31,000 --> 00:06:33,000 Will that be with cream and sugar, sir? 108 00:06:33,000 --> 00:06:37,000 So is this Hollywood hocus pocus or can it really happen? 109 00:06:37,000 --> 00:06:39,000 Alright, so which one of us is going to get hypnotized? 110 00:06:39,000 --> 00:06:41,000 Unfortunately, it's not that easy. 111 00:06:41,000 --> 00:06:43,000 Apparently not everyone can be hypnotized. 112 00:06:43,000 --> 00:06:46,000 So I think first of all, we need to go find a hypnotist. 113 00:06:46,000 --> 00:06:48,000 Find out which one of us is susceptible. 114 00:06:48,000 --> 00:06:52,000 And whoever that is, that's the person that gets the post-hypnotic suggestion. 115 00:06:52,000 --> 00:06:53,000 Great. 116 00:06:54,000 --> 00:06:56,000 Let's go find a hypnotist. 117 00:06:56,000 --> 00:07:00,000 To put this myth to the test, the starting point is to see if any of them 118 00:07:00,000 --> 00:07:03,000 can actually be hypnotized in the first place. 119 00:07:04,000 --> 00:07:06,000 Here we have a hypnotherapist and a neurotherapist. 120 00:07:06,000 --> 00:07:09,000 They're going to figure out which one of us can be hypnotized. 121 00:07:09,000 --> 00:07:13,000 For this test, we need post-hypnotic suggestion. 122 00:07:13,000 --> 00:07:16,000 And if none of us can be hypnotized, we're stuck. 123 00:07:16,000 --> 00:07:18,000 And first up is Torey. 124 00:07:18,000 --> 00:07:21,000 The plan is that Karrion Grant will monitor his progress 125 00:07:21,000 --> 00:07:25,000 with the help of neurotherapist Cynthia and her EEG machine. 126 00:07:27,000 --> 00:07:30,000 So it's like if I get a wrong answer, then you shock me. 127 00:07:30,000 --> 00:07:34,000 While clinical hypnotist Seth will try to put him under her spell. 128 00:07:34,000 --> 00:07:37,000 Just keep on focusing on my hand. 129 00:07:37,000 --> 00:07:40,000 Noticing that your eyes start to feel heavy. 130 00:07:40,000 --> 00:07:45,000 Allow that feeling of heaviness to get more and more, more and more heavy. 131 00:07:45,000 --> 00:07:49,000 Do you know what percentage of people are able to be hypnotized? 132 00:07:49,000 --> 00:07:51,000 Easily 85%. 133 00:07:51,000 --> 00:07:52,000 85%. 134 00:07:52,000 --> 00:07:53,000 To some degree. 135 00:07:53,000 --> 00:07:56,000 Despite the odds, they're not off to a good start. 136 00:07:56,000 --> 00:08:01,000 Because even after 10 minutes, Torey's brain activity has only dropped by 5%. 137 00:08:03,000 --> 00:08:07,000 I would want to see it get to about half of what it was. 138 00:08:07,000 --> 00:08:10,000 So if he was about 9.5, I'd like to see it at about maybe 4. 139 00:08:11,000 --> 00:08:14,000 Torey's inability to relax means he's out of the race. 140 00:08:14,000 --> 00:08:16,000 So next up is Karrion. 141 00:08:16,000 --> 00:08:18,000 And the boys have high hopes for her. 142 00:08:19,000 --> 00:08:23,000 I actually think that she's a reasonable candidate to be hypnotized. 143 00:08:23,000 --> 00:08:24,000 Why? 144 00:08:24,000 --> 00:08:27,000 I don't know, it's kind of a gut feeling. 145 00:08:27,000 --> 00:08:29,000 Could you tell her to do things and she doesn't? 146 00:08:29,000 --> 00:08:32,000 No, that's definitely not the reason why. 147 00:08:32,000 --> 00:08:36,000 But their hopes are ill-founded because Karrion won't go under either. 148 00:08:37,000 --> 00:08:42,000 I think I would start to get relaxed enough that I was almost in a sleep-like state. 149 00:08:42,000 --> 00:08:45,000 But then I'd be like, oh, I'm trying to be in a sleep-like state. 150 00:08:45,000 --> 00:08:46,000 I'm trying so hard. 151 00:08:46,000 --> 00:08:50,000 So it's almost like I couldn't let myself completely relax. 152 00:08:51,000 --> 00:08:55,000 So with the score standing at 0-2, it all boils down to Grant. 153 00:08:55,000 --> 00:08:58,000 But will Mr. Science submit to Seth? 154 00:08:59,000 --> 00:09:01,000 Deeply, deeply down. 155 00:09:01,000 --> 00:09:03,000 More and more relaxed. 156 00:09:03,000 --> 00:09:08,000 Despite Grant's initial discomfort, after 5 minutes, things are looking good. 157 00:09:09,000 --> 00:09:11,000 Like a rag doll, deeper down. 158 00:09:11,000 --> 00:09:18,000 The EEG machine shows Grant's brain activity has already dropped from a level 9 to a 4. 159 00:09:18,000 --> 00:09:20,000 I think he's in a deep state. 160 00:09:20,000 --> 00:09:22,000 I think he's more hypnotizable. 161 00:09:22,000 --> 00:09:24,000 There you go, look at that. 162 00:09:24,000 --> 00:09:29,000 And what that means is he's just the kind of highly suggestible subject they're looking for. 163 00:09:29,000 --> 00:09:32,000 Grant would make a good subject for a post-hypnotic suggestion. 164 00:09:32,000 --> 00:09:35,000 He's a very susceptible person. 165 00:09:35,000 --> 00:09:36,000 You're the winner. 166 00:09:36,000 --> 00:09:38,000 Okay, what does that mean? 167 00:09:38,000 --> 00:09:40,000 Well, you know what that means. 168 00:09:40,000 --> 00:09:45,000 Now we're going to see if we can hypnotize you and see if we can get you to do something that you wouldn't normally do. 169 00:09:45,000 --> 00:09:47,000 She's not going to embarrass me or anything. 170 00:09:47,000 --> 00:09:49,000 Don't worry, it won't be too humiliating. 171 00:09:49,000 --> 00:09:52,000 Still to come. More firefighting with sound. 172 00:09:52,000 --> 00:09:53,000 Fun! 173 00:09:53,000 --> 00:09:54,000 From song... 174 00:09:54,000 --> 00:09:55,000 Yeah, yeah, yeah! 175 00:09:55,000 --> 00:09:57,000 ...to sonic booms. 176 00:09:57,000 --> 00:09:58,000 But next... 177 00:09:58,000 --> 00:10:02,000 Can I be hypnotized to do something against my will? 178 00:10:10,000 --> 00:10:17,000 Popular in the early 1900s, Charles Kellogg was a naturalist cum showman with an extraordinary talent. 179 00:10:17,000 --> 00:10:25,000 Not only could he sing like a bird, but he could also supposedly extinguish a sensitive flame with his voice. 180 00:10:25,000 --> 00:10:31,000 But when the mythbusters tried to replicate this feat, they failed to douse anything. 181 00:10:31,000 --> 00:10:36,000 But in case the 100-year-old recording they used was of insufficient quality, 182 00:10:36,000 --> 00:10:39,000 they've now called in the big guns. 183 00:10:39,000 --> 00:10:40,000 Hey, Roger! 184 00:10:40,000 --> 00:10:41,000 Hey! 185 00:10:41,000 --> 00:10:42,000 How you doing? 186 00:10:42,000 --> 00:10:43,000 Good to see you. 187 00:10:43,000 --> 00:10:44,000 Come to help us do some detective work? 188 00:10:44,000 --> 00:10:45,000 Yeah! 189 00:10:45,000 --> 00:10:52,000 Sound engineer Roger has brought a tone generator to replicate the full vocal range of Kellogg's bird voice. 190 00:10:52,000 --> 00:10:57,000 In Kellogg's day, this was the way that you generated a precise frequency. 191 00:10:57,000 --> 00:11:01,000 This is what they used to tune pianos and other things, I believe. 192 00:11:01,000 --> 00:11:03,000 Not that I've ever done it. 193 00:11:03,000 --> 00:11:07,000 But these days we have things called tone generators. 194 00:11:07,000 --> 00:11:14,000 And so we'll be able to get any frequency that we want within any conceivable range. 195 00:11:14,000 --> 00:11:19,000 But before getting into a frequency frenzy, let's get a few things straight. 196 00:11:19,000 --> 00:11:23,000 Sound is vibrations traveling through the air in waves. 197 00:11:23,000 --> 00:11:28,000 Its frequency is a measure of how many times the sound wave vibrates in one second. 198 00:11:28,000 --> 00:11:31,000 The higher the frequency, the higher the pitch. 199 00:11:31,000 --> 00:11:38,000 Kellogg's bird voice could supposedly reach a barely audible frequency of 14,000 Hz. 200 00:11:38,000 --> 00:11:41,000 Something that the tone generator can match. 201 00:11:41,000 --> 00:11:45,000 I'd love to sweep all the way up through and into the inaudible range. 202 00:11:45,000 --> 00:11:48,000 Because again, we keep on seeing, and all the material Kellogg said, 203 00:11:48,000 --> 00:11:53,000 that he thought it was the high frequency that affected the flame more than low frequency. 204 00:11:53,000 --> 00:11:58,000 Roger cuts straight to the chase and tunes into 14,000 Hz. 205 00:11:58,000 --> 00:12:03,000 But the flame keeps burning bright. 206 00:12:03,000 --> 00:12:05,000 So, we're down? 207 00:12:05,000 --> 00:12:11,000 So the team decides to change tactic and lower the frequency and what do you know? 208 00:12:11,000 --> 00:12:18,000 What? Oh! Hey! What was that at? 209 00:12:18,000 --> 00:12:26,000 At 166 Hz, the opposite end of the spectrum to Kellogg and the sensitive flame does go silent. 210 00:12:26,000 --> 00:12:29,000 And Adam's not entirely satisfied. 211 00:12:29,000 --> 00:12:35,000 This is a rig that utilizes fire, it's true, but I can put this fire up by doing that. 212 00:12:35,000 --> 00:12:38,000 That's the rig failing to maintain a fire. 213 00:12:38,000 --> 00:12:41,000 That's not a fire being extinguished. 214 00:12:41,000 --> 00:12:43,000 And I think that's a really key difference. 215 00:12:43,000 --> 00:12:46,000 What I'd like to do now that I've got all this equipment set up, 216 00:12:46,000 --> 00:12:50,000 is just put a candle in front of the speaker and see what kind of responses I get out of it. 217 00:12:50,000 --> 00:12:54,000 It's an ordinary household candle about as simple as fire can get. 218 00:12:54,000 --> 00:12:59,000 And unlike the sensitive flame, it has no special trappings to make it reactive to sound. 219 00:12:59,000 --> 00:13:02,000 Ready? But... yeah. 220 00:13:04,000 --> 00:13:08,000 They start with high frequencies but get nowhere fast. 221 00:13:08,000 --> 00:13:11,000 No appreciable effect on the flame at all. 222 00:13:11,000 --> 00:13:16,000 It's not until they lower the tone that they get the result thereafter. 223 00:13:17,000 --> 00:13:20,000 Oh! 224 00:13:20,000 --> 00:13:26,000 So at low frequencies from a tone generator, a flame can be extinguished with sound. 225 00:13:26,000 --> 00:13:34,000 The low-pitched sound sends out a pressure wave which vibrates the air so much that the flame gets snuffed out. 226 00:13:34,000 --> 00:13:38,000 My question now would be could you and I replicate that with our voices? 227 00:13:38,000 --> 00:13:40,000 Can we pipe our voices to this thing? 228 00:13:40,000 --> 00:13:41,000 Yeah. 229 00:13:41,000 --> 00:13:48,000 So, can the human voice replicate this feat? Time to tackle this myth karaoke style. 230 00:13:52,000 --> 00:13:56,000 Just like in real life, Adam is loud but he's not very deep. 231 00:13:56,000 --> 00:13:58,000 Ba-ba-ba. 232 00:14:00,000 --> 00:14:03,000 And the candle keeps candle-ing on. 233 00:14:03,000 --> 00:14:05,000 That's as low as I can go. 234 00:14:05,000 --> 00:14:07,000 Will Jamie be able to do any better? 235 00:14:07,000 --> 00:14:12,000 Ladies and gentlemen, right now I'd like to bring up to the mic a very good old friend of mine, Mr. James Heidemann. 236 00:14:12,000 --> 00:14:14,000 James Heidemann, let's bring him on up. Come on. 237 00:14:14,000 --> 00:14:16,000 Oh yeah. 238 00:14:16,000 --> 00:14:22,000 Jamie's dulcet tones ring out but the candle keeps on keeping on. 239 00:14:22,000 --> 00:14:24,000 Is that all the volume we've got? 240 00:14:24,000 --> 00:14:25,000 Yeah. 241 00:14:25,000 --> 00:14:30,000 In desperation, Jamie adopts the birthday cake approach. 242 00:14:30,000 --> 00:14:33,000 That seems to be working. 243 00:14:34,000 --> 00:14:38,000 But it doesn't look like he'll be getting his wish anytime soon. 244 00:14:41,000 --> 00:14:47,000 Can you really be hypnotized to do something against your will and without your knowledge? 245 00:14:49,000 --> 00:14:51,000 Will that be with cream and sugar, sir? 246 00:14:51,000 --> 00:14:56,000 The team has already determined that Grant is a suitably susceptible subject. 247 00:14:56,000 --> 00:15:02,000 So, all that remains now is for Carrie and Tori to figure out what they want him to do. 248 00:15:02,000 --> 00:15:09,000 A little apprehensive as to what the other two might have come up with in their little minds. 249 00:15:09,000 --> 00:15:11,000 And apprehensive he should be. 250 00:15:11,000 --> 00:15:12,000 I like that. 251 00:15:12,000 --> 00:15:21,000 The plan is when Tori says the words, quantum physics, Grant will suddenly decide to draw love hearts on his beloved robot, Dead Blow, 252 00:15:21,000 --> 00:15:23,000 something he would never normally do. 253 00:15:23,000 --> 00:15:29,000 And when Carrie yawns, he'll jump up and down, something he might normally do. 254 00:15:29,000 --> 00:15:35,000 It's back into the chair for Labrad Grant, and it's only a few minutes before the souped up EEG machine 255 00:15:35,000 --> 00:15:39,000 shows that Grant's brain activity has dropped by 50%. 256 00:15:39,000 --> 00:15:42,000 It's kind of creepy. He looks like a zombie. 257 00:15:42,000 --> 00:15:47,000 With Grant well and truly under, Seth plants the seeds of post-hypnotic suggestion, 258 00:15:47,000 --> 00:15:50,000 starting with one he would never normally do. 259 00:15:51,000 --> 00:16:02,000 When you hear the words, quantum physics, on your right butt, you're going to draw a beautiful, feminine heart. 260 00:16:02,000 --> 00:16:09,000 Oh my God, she just gave him the command, and he agreed to it without cracking a smile. 261 00:16:09,000 --> 00:16:12,000 He can't, I know he's not that good an actor. 262 00:16:12,000 --> 00:16:17,000 So far, so good. Now for the much easier second suggestion. 263 00:16:17,000 --> 00:16:27,000 Whenever you see Carrie yawn, you are going to have this uncontrollable urge to jump up and down. 264 00:16:27,000 --> 00:16:30,000 He looks like he's putty in her hands. 265 00:16:30,000 --> 00:16:33,000 I'd like you now to get ready to come back. 266 00:16:33,000 --> 00:16:39,000 So the seeds have been sown. They'll have to wait until tomorrow to see if they've taken root. 267 00:16:39,000 --> 00:16:44,000 Later, the team witness an event that leaves Jamie mad as a hatter. 268 00:16:44,000 --> 00:16:48,000 But first, it's Mythbusters the musical. 269 00:16:48,000 --> 00:16:53,000 Coming up next on Mythbusters. 270 00:16:53,000 --> 00:16:56,000 Can a human voice put out a fire? 271 00:17:04,000 --> 00:17:09,000 Jamie and Adam are trying to overturn conventional firefighting techniques 272 00:17:09,000 --> 00:17:12,000 by putting out fires with the human voice. 273 00:17:12,000 --> 00:17:17,000 But the results so far aren't about to set the world ablaze. 274 00:17:17,000 --> 00:17:19,000 So where are we at with this myth? 275 00:17:19,000 --> 00:17:24,000 Well, we have successfully demonstrated that we can put out a fire using a sound, 276 00:17:24,000 --> 00:17:27,000 but we have not demonstrated that a human voice can do it. 277 00:17:27,000 --> 00:17:29,000 Doesn't that mean it's busted? 278 00:17:29,000 --> 00:17:33,000 Not exactly. I mean, just because we can't do it doesn't mean it can't be done. 279 00:17:33,000 --> 00:17:35,000 Remember shattering a wine glass? 280 00:17:35,000 --> 00:17:39,000 When Adam and Jamie tried to shatter a wine glass with their unamplified voices, 281 00:17:39,000 --> 00:17:42,000 they got nowhere fast. 282 00:17:42,000 --> 00:17:46,000 Not surprisingly, I don't think I can do it. 283 00:17:46,000 --> 00:17:51,000 It wasn't until they unleashed the power of rocker pro Jamie Van Derra 284 00:17:51,000 --> 00:17:54,000 that they got their lucky break. 285 00:17:54,000 --> 00:17:57,000 I think it's time to bring in some professionals. 286 00:17:57,000 --> 00:17:58,000 Like some singers. 287 00:17:58,000 --> 00:17:59,000 Exactly. 288 00:18:02,000 --> 00:18:07,000 Q local acapella group hook slide with their most bizarre gig to date. 289 00:18:10,000 --> 00:18:13,000 Whenever you're ready, take it away and try and put out that candle. 290 00:18:16,000 --> 00:18:21,000 Sure, they can hold a harmony, but are they firefighting material? 291 00:18:24,000 --> 00:18:26,000 One of you hit a really specific note. 292 00:18:30,000 --> 00:18:33,000 Once again, it's the low frequencies that have the most effect. 293 00:18:33,000 --> 00:18:37,000 So bassist Jonathan gets his chance for a solo. 294 00:18:40,000 --> 00:18:44,000 At first, even his lowest low doesn't work. 295 00:18:44,000 --> 00:18:46,000 Do the buzz, do the see, get the beat. 296 00:18:46,000 --> 00:18:51,000 But as the saying goes, if at first you don't succeed, well... 297 00:18:52,000 --> 00:18:56,000 It turns out that it is possible to put out a flame with an amplified human voice. 298 00:18:56,000 --> 00:18:58,000 Of course, we can't leave it there. 299 00:18:58,000 --> 00:19:01,000 On the tails of that success, I think we should set up a bigger flame 300 00:19:01,000 --> 00:19:04,000 and some bigger speakers and put you on to the test. 301 00:19:04,000 --> 00:19:11,000 With mission accomplished on the candle, it's time to turn up the heat to record breaking proportions. 302 00:19:11,000 --> 00:19:16,000 This is our next test bed to try and put a fire out with sound or a voice. 303 00:19:16,000 --> 00:19:19,000 This is simply propane that you took up to your barbecue. 304 00:19:19,000 --> 00:19:21,000 It's really simple. 305 00:19:21,000 --> 00:19:23,000 We're going to kind of supersize it here. 306 00:19:23,000 --> 00:19:26,000 We've got a much bigger flame, much bigger speakers. 307 00:19:26,000 --> 00:19:28,000 We'll see whether we can get the same effect. 308 00:19:28,000 --> 00:19:31,000 It's back to the booth for our beatbox bassist. 309 00:19:34,000 --> 00:19:37,000 Blowing raspberries in the name of science. 310 00:19:38,000 --> 00:19:47,000 Try as he might, even at a whopping 146 decibels, Jonathan's raspberries are no match for the bigger burn. 311 00:19:47,000 --> 00:19:49,000 I think it's time to move on to tones. Thank you so much. 312 00:19:49,000 --> 00:19:50,000 I appreciate it. 313 00:19:50,000 --> 00:19:52,000 Roger, it's all up to you now. You ready? 314 00:19:52,000 --> 00:19:53,000 Ready. 315 00:19:53,000 --> 00:20:00,000 Armed with $80,000 worth of audio equipment, is there anything Roger can do to put out this fire? 316 00:20:00,000 --> 00:20:10,000 He works his way through the frequencies and cranks it up to a bone jarring, painfully loud, 155 decibels. 317 00:20:10,000 --> 00:20:13,000 But even that can't put out the fire. 318 00:20:13,000 --> 00:20:15,000 There's stuff falling off of the ceiling. 319 00:20:15,000 --> 00:20:18,000 But Jamie's got one last idea. 320 00:20:18,000 --> 00:20:20,000 We're going to give it one last shot. 321 00:20:20,000 --> 00:20:24,000 We've reconfigured the speakers so they're more or less coming at the flame in one wall. 322 00:20:24,000 --> 00:20:27,000 Frankly, we're a little baffled. We don't know what else to do. 323 00:20:27,000 --> 00:20:30,000 Will the V formation be V for victory? 324 00:20:30,000 --> 00:20:36,000 Roger cranks up the base at Adams on his hands and knees, praying for a sweet spot. 325 00:20:36,000 --> 00:20:42,000 It's less about intricate planning and more about trial and error, but suddenly... 326 00:20:48,000 --> 00:20:49,000 Oh my God. 327 00:20:49,000 --> 00:20:59,000 It's a red letter day for science because at 55 hertz at a room shaking 149 decibels, they've achieved a world first. 328 00:20:59,000 --> 00:21:05,000 No one has ever put out a fire of this size with sound until now. 329 00:21:05,000 --> 00:21:15,000 This is yet another in a long line of cases in which I completely didn't expect the result we got at the very end of the day. 330 00:21:16,000 --> 00:21:21,000 Everything we've done up until we got that flame to go out was telling me not going to happen. 331 00:21:21,000 --> 00:21:26,000 The difference between a candle and a real fire is significant and we were not going to get any positive results. 332 00:21:26,000 --> 00:21:30,000 And we did. That's stunning. I love being wrong. 333 00:21:30,000 --> 00:21:37,000 But it's not over yet because before this myth is extinguished, there's an explosive twist to the tale. 334 00:21:37,000 --> 00:21:40,000 This one's about putting out fire with your voice. 335 00:21:40,000 --> 00:21:46,000 If you want to see other interesting ways that sound and fire interact, log on to discovery.com. 336 00:21:46,000 --> 00:21:48,000 It's hot stuff. 337 00:21:53,000 --> 00:21:56,000 It's like any other morning at Mythbusters. 338 00:21:56,000 --> 00:22:00,000 Except today, Grant is a ticking time bomb. 339 00:22:00,000 --> 00:22:04,000 Yesterday, he was implanted with two post-hypnotic suggestions. 340 00:22:04,000 --> 00:22:07,000 It's time to see if those seeds have taken root. 341 00:22:07,000 --> 00:22:15,000 The two triggers are one, we're saying quantum physics, and that's going to cause Grant to pull out his marker and go draw hearts on his robot. 342 00:22:15,000 --> 00:22:20,000 And then the second one is, Carrie's going to yawn and that's going to get him to jump around. 343 00:22:20,000 --> 00:22:23,000 So either way, it should be a very entertaining day. 344 00:22:23,000 --> 00:22:28,000 Neither Carrie nor Tori have spoken to Grant about yesterday's hypnosis session. 345 00:22:28,000 --> 00:22:32,000 As far as he's concerned, he's designing a diet coke and Mentos rig. 346 00:22:32,000 --> 00:22:35,000 So bring on the trigger words. 347 00:22:36,000 --> 00:22:40,000 You know what I can do is make something that will just push them all in really quick. 348 00:22:40,000 --> 00:22:43,000 That just seems like a lot of extra work. 349 00:22:43,000 --> 00:22:45,000 I think getting too complicated. 350 00:22:45,000 --> 00:22:47,000 I mean, it's not like this is quantum physics. 351 00:22:47,000 --> 00:22:49,000 That was the trigger. 352 00:22:49,000 --> 00:22:51,000 Okay. 353 00:22:51,000 --> 00:22:55,000 But the robot remains graffiti free. 354 00:22:55,000 --> 00:22:59,000 Maybe the more subtle suggestion will stand a better chance. 355 00:22:59,000 --> 00:23:01,000 I have some... 356 00:23:01,000 --> 00:23:03,000 Some... 357 00:23:03,000 --> 00:23:09,000 Carrie yawns once and twice, but nothing. 358 00:23:11,000 --> 00:23:16,000 The triggers are enough to give him the giggles, but not enough to put him under their power. 359 00:23:16,000 --> 00:23:18,000 So what went wrong? 360 00:23:18,000 --> 00:23:22,000 I had a clear idea of what they wanted me to do. 361 00:23:22,000 --> 00:23:32,000 And all through, I was trying to say, okay, well, maybe hopefully I'll forget and then it'll be subliminal, but just kept coming back. 362 00:23:33,000 --> 00:23:40,000 So it didn't work on Gray, but is it a little too soon to call this one game over for the myth? 363 00:23:40,000 --> 00:23:44,000 I think the real problem is you always knew you were going to get a suggestion while you were under. 364 00:23:44,000 --> 00:23:47,000 You didn't know what it was, but you always knew. 365 00:23:47,000 --> 00:23:48,000 All right. 366 00:23:48,000 --> 00:23:52,000 Well, maybe what we'd do is we find somebody from the crew who believes in hypnosis and wants to change. 367 00:23:52,000 --> 00:23:57,000 While they're under, we secretly put a post-hypnotic suggestion in there. 368 00:23:57,000 --> 00:23:59,000 I have the perfect candidate. 369 00:23:59,000 --> 00:24:04,000 Alice, who's one of our producers, wants to stop chewing the tops of her pens. 370 00:24:04,000 --> 00:24:10,000 And she is a big believer in alternative healing techniques like hypnosis. 371 00:24:10,000 --> 00:24:19,000 So I say we bring her in, give her hypnosis for chewing the tops of the pens, but while she's under, we give her our own suggestion. 372 00:24:19,000 --> 00:24:26,000 Producer Alice has been working with Jamie and Adam on another story and has no idea what this team is up to. 373 00:24:26,000 --> 00:24:32,000 She thinks she's here to be hypnotized to kick her disgusting, pen-chewing habit. 374 00:24:32,000 --> 00:24:38,000 Just allow your eyes to close and allow yourself to double the relaxation. 375 00:24:38,000 --> 00:24:43,000 But what she doesn't know is that while she's under, something devious is going on. 376 00:24:43,000 --> 00:24:47,000 So we're going to give her post-hypnotic suggestions the same way that we gave you. 377 00:24:47,000 --> 00:24:52,000 We're going to give her one that is something that she could easily do, like grabbing her ear. 378 00:24:52,000 --> 00:24:59,000 And then the second one we're going to do is completely against her moral fiber, something she would not do. 379 00:24:59,000 --> 00:25:00,000 That is. 380 00:25:00,000 --> 00:25:01,000 Slapping me in the face. 381 00:25:01,000 --> 00:25:06,000 With the session in full swing, it's time to plant the first suggestion. 382 00:25:06,000 --> 00:25:14,000 When you hear the word Adam, would it be okay with you if you were to scratch your ear? 383 00:25:14,000 --> 00:25:18,000 I don't like the idea of this. This is trickery. 384 00:25:18,000 --> 00:25:19,000 She's hot. 385 00:25:20,000 --> 00:25:25,000 Despite an encouraging start, it doesn't look like producer Alice is going to take the bait. 386 00:25:25,000 --> 00:25:29,000 I did not agree to this before. 387 00:25:29,000 --> 00:25:33,000 Looks like this myth is sinking faster than a lead balloon. 388 00:25:33,000 --> 00:25:38,000 She knows we're trying to sneak in some post-hypnotic suggestions and it's not working. 389 00:25:38,000 --> 00:25:45,000 We didn't even get to the fun part. I wanted to see what she would do if we told her to do something totally crazy, like slap me. 390 00:25:45,000 --> 00:25:50,000 Instead, it's a slap in the face for post-hypnotic suggestion. It works fine in the movies. 391 00:25:50,000 --> 00:25:54,000 I must kill the queen. 392 00:25:54,000 --> 00:25:59,000 But in the real world, well, even hypnotists say it can't be done. 393 00:25:59,000 --> 00:26:04,000 Hypnosis can't control you. You have to want to accept the suggestion. 394 00:26:04,000 --> 00:26:07,000 But if you don't want to do it, it's not going to happen. 395 00:26:07,000 --> 00:26:10,000 I'm so sad. I really wanted this one to work. 396 00:26:10,000 --> 00:26:12,000 You wanted to get slapped in the face? 397 00:26:12,000 --> 00:26:19,000 Well, we did get a good result. As soon as the hypnotist tried to make Alice do something against her will, she came right out of the hypnosis. 398 00:26:19,000 --> 00:26:23,000 So it is just like they say, you never really go totally unconscious. 399 00:26:23,000 --> 00:26:30,000 And most hypnotherapists and hypnotists agree that you can't make anyone do anything that's against their moral fiber. 400 00:26:30,000 --> 00:26:32,000 So this one's busted? 401 00:26:32,000 --> 00:26:33,000 Busted. 402 00:26:33,000 --> 00:26:36,000 It's too bad, because I kind of wanted to take over the world. 403 00:26:42,000 --> 00:26:47,000 Later, the mythbusters get all fired up and try to put it out with a bang. 404 00:26:47,000 --> 00:26:49,000 Fire in the hole! 405 00:26:50,000 --> 00:26:53,000 But next, Jamie and Adam act for science. 406 00:26:53,000 --> 00:26:54,000 When was that? 407 00:26:54,000 --> 00:26:57,000 And put the team's memory to the test. 408 00:26:57,000 --> 00:26:59,000 I can't remember anything else. 409 00:27:03,000 --> 00:27:08,000 Hey, don't try what you're about to see at home. We're what you call experts. 410 00:27:08,000 --> 00:27:11,000 That's right. We do this for a living. 411 00:27:12,000 --> 00:27:16,000 Grant and Tory have been having so much fun exploring hypnosis myths... 412 00:27:16,000 --> 00:27:18,000 I don't like it's fun to visit. 413 00:27:19,000 --> 00:27:22,000 ...that Adam and Jamie can't help but join them. 414 00:27:22,000 --> 00:27:23,000 What are you doing? 415 00:27:23,000 --> 00:27:26,000 I'm carrying Grant and Tory are doing hypnosis myths. 416 00:27:26,000 --> 00:27:31,000 And as long as they're exploring the subject, there is one I have always wanted to try. 417 00:27:31,000 --> 00:27:32,000 Now, what's that? 418 00:27:32,000 --> 00:27:38,000 Well, it's that you can remember more details under hypnosis than under normal circumstances. 419 00:27:38,000 --> 00:27:42,000 The police could put you under hypnosis and you'd remember all sorts of things about a crime you witnessed... 420 00:27:42,000 --> 00:27:45,000 ...that you had no conscious memory of witnessing. 421 00:27:46,000 --> 00:27:50,000 It's one of the most pervasive myths associated with hypnosis. 422 00:27:50,000 --> 00:27:55,000 But can going under really unleash a vast resource of hidden memories? 423 00:27:55,000 --> 00:28:00,000 So to put this myth to the test, they've enlisted the help of local actors Brian and Brian... 424 00:28:00,000 --> 00:28:05,000 ...to stage a scene that will take place in front of Carrie, Tory and Grant. 425 00:28:05,000 --> 00:28:09,000 The goal of this scene is to elevate their stress levels a little bit... 426 00:28:09,000 --> 00:28:15,000 ...make them view something that's slightly uncomfortable and then they're going to have to remember exactly what happened. 427 00:28:15,000 --> 00:28:19,000 We're going to fill a little scenario with a bunch of details that they're supposed to remember. 428 00:28:19,000 --> 00:28:24,000 And we're going to see if they can remember more of those details under hypnosis than under normal conditions. 429 00:28:25,000 --> 00:28:26,000 Excellent. 430 00:28:26,000 --> 00:28:31,000 The basic scene is that Brian and Brian are going to be delivery men with attitude. 431 00:28:31,000 --> 00:28:32,000 Wait, wait, wait, wait. 432 00:28:32,000 --> 00:28:34,000 You're a big man, huh? 433 00:28:34,000 --> 00:28:35,000 You're a big star. 434 00:28:35,000 --> 00:28:37,000 ...who push Jamie over the edge. 435 00:28:38,000 --> 00:28:39,000 Well that ought to work. 436 00:28:39,000 --> 00:28:40,000 That is perfect. 437 00:28:40,000 --> 00:28:42,000 This is going to be an ideal test. 438 00:28:42,000 --> 00:28:44,000 Yeah, there's a lot for them to remember there. 439 00:28:44,000 --> 00:28:50,000 What's important for this myth is that there are plenty of actions and words to remember. 440 00:28:50,000 --> 00:28:54,000 But Adam wants to leave a series of visual clues as well. 441 00:28:55,000 --> 00:28:56,000 Look at that. 442 00:28:56,000 --> 00:29:02,000 A tattoo here, a few name tags there and some company logos for good measure. 443 00:29:02,000 --> 00:29:08,000 These are the kinds of quality clues which, if remembered, could break a real life crime case. 444 00:29:09,000 --> 00:29:16,000 But over at M7, will an unsuspecting Kari, Tori and Grant be able to remember more of these clues when under hypnosis? 445 00:29:17,000 --> 00:29:22,000 Only the camera crew have been led in on the little secret so they can record it going down. 446 00:29:22,000 --> 00:29:25,000 So, let the scene be seen. 447 00:29:25,000 --> 00:29:27,000 I have a package for M7. 448 00:29:27,000 --> 00:29:28,000 I can take it. 449 00:29:28,000 --> 00:29:29,000 You're that guy, man. 450 00:29:29,000 --> 00:29:30,000 Hey, how's it going? 451 00:29:30,000 --> 00:29:32,000 This is the guy from the show, right? 452 00:29:32,000 --> 00:29:34,000 You're from the show where they blow stuff up and stuff? 453 00:29:34,000 --> 00:29:35,000 Oh my God. 454 00:29:35,000 --> 00:29:37,000 You mind if I get a signature though? 455 00:29:37,000 --> 00:29:44,000 A whole array of clues are being dropped as the scene gets underway, but are any being picked up by the team? 456 00:29:44,000 --> 00:29:48,000 Just put something like, live the myth, live the dream or something like that. 457 00:29:48,000 --> 00:29:49,000 You got to be kidding me. 458 00:29:49,000 --> 00:29:51,000 At first, they don't take much notice. 459 00:29:51,000 --> 00:29:54,000 Can I take a picture of you, you and me? 460 00:29:54,000 --> 00:29:56,000 I'm going to wear the beanie. 461 00:29:56,000 --> 00:29:58,000 Until things escalate. 462 00:29:58,000 --> 00:30:00,000 They leave the hat alone and say it's cool. 463 00:30:00,000 --> 00:30:02,000 We got to get back to work here. 464 00:30:02,000 --> 00:30:03,000 Big TV star, huh? 465 00:30:03,000 --> 00:30:04,000 Yeah, you don't have to. 466 00:30:04,000 --> 00:30:07,000 Now, the scene has got their undivided attention. 467 00:30:07,000 --> 00:30:08,000 You know what? 468 00:30:08,000 --> 00:30:09,000 You know what? 469 00:30:09,000 --> 00:30:10,000 Screw that. 470 00:30:10,000 --> 00:30:11,000 No photo, no package. 471 00:30:11,000 --> 00:30:12,000 God. 472 00:30:12,000 --> 00:30:13,000 Movie star. 473 00:30:13,000 --> 00:30:14,000 What? 474 00:30:14,000 --> 00:30:15,000 It's coming. 475 00:30:15,000 --> 00:30:16,000 It's time for this. 476 00:30:16,000 --> 00:30:17,000 What was that? 477 00:30:17,000 --> 00:30:22,000 The only way that any of that would make sense if some music started and he started taking his clothes off or something. 478 00:30:22,000 --> 00:30:23,000 It was like a... 479 00:30:23,000 --> 00:30:24,000 It was like a... 480 00:30:24,000 --> 00:30:27,000 With the show over, it's time. 481 00:30:27,000 --> 00:30:29,000 It's time to let them in on the scan. 482 00:30:29,000 --> 00:30:30,000 How'd you like that? 483 00:30:30,000 --> 00:30:31,000 It was pretty good. 484 00:30:31,000 --> 00:30:32,000 It was crazy. 485 00:30:32,000 --> 00:30:37,000 We constructed that whole scene to give you guys a bunch of facts to try and remember. 486 00:30:37,000 --> 00:30:45,000 The myth is that under hypnosis, you might remember more about a crime or an event that happened in front of you than you would under normal conditions. 487 00:30:45,000 --> 00:30:46,000 That's good. 488 00:30:46,000 --> 00:30:53,000 So we wrote down a whole bunch of details about the physical appearance of those guys and about the narrative of exactly what happened. 489 00:30:53,000 --> 00:30:55,000 And we have those questions in here. 490 00:30:55,000 --> 00:31:02,000 We're going to ask you guys this questionnaire, not under hypnosis, and then under hypnosis and see if there's a difference in the results. 491 00:31:02,000 --> 00:31:08,000 Time to find out, as Tori, Carrie and Grant submit to the Mythbusters memory exam. 492 00:31:08,000 --> 00:31:10,000 I feel like I'm back in high school. 493 00:31:10,000 --> 00:31:12,000 No, because if you're back in high school, you'd be cheating off of me. 494 00:31:12,000 --> 00:31:14,000 I wouldn't have been a cheat off of you. 495 00:31:14,000 --> 00:31:15,000 I'm a cheat off of Grant. 496 00:31:15,000 --> 00:31:16,000 Ready? 497 00:31:16,000 --> 00:31:19,000 One, two, three, and begin. 498 00:31:19,000 --> 00:31:24,000 They're going to be asked the same set of questions before and after hypnosis. 499 00:31:25,000 --> 00:31:26,000 Right? 500 00:31:26,000 --> 00:31:33,000 Questions about the culprit's names, their distinguishing features, and even their smell. 501 00:31:33,000 --> 00:31:35,000 That's a weird question. 502 00:31:35,000 --> 00:31:38,000 Will test their range of recall across all the senses. 503 00:31:38,000 --> 00:31:40,000 I think that's it. 504 00:31:40,000 --> 00:31:41,000 I'm done. 505 00:31:41,000 --> 00:31:43,000 I can't remember anything else. 506 00:31:43,000 --> 00:31:45,000 So how do they rate their recall? 507 00:31:45,000 --> 00:31:49,000 I mean, I know there's a lot of details that I probably got wrong. 508 00:31:49,000 --> 00:31:55,000 I remember things, but I don't remember specifics about those things. 509 00:31:55,000 --> 00:31:56,000 He's not kidding. 510 00:31:56,000 --> 00:31:59,000 Although they could all remember some general info about the scene, 511 00:31:59,000 --> 00:32:05,000 no one was able to recall anything critical that could lead to an arrest in a real life case. 512 00:32:05,000 --> 00:32:10,000 But will hypnosis help paint a clearer picture before this case goes cold? 513 00:32:10,000 --> 00:32:14,000 Those guys don't seem to be doing too well with the Mythbusters memory exam. 514 00:32:14,000 --> 00:32:15,000 No, they're not. 515 00:32:15,000 --> 00:32:17,000 Think you can do better? 516 00:32:17,000 --> 00:32:24,000 Log on to Discovery.com slash Mythbusters, where you'll find a video you can use to put your own memory to the test. 517 00:32:24,000 --> 00:32:27,000 Coming right up, the team goes into a trance. 518 00:32:27,000 --> 00:32:29,000 Sleep, sleep, sleep. 519 00:32:29,000 --> 00:32:33,000 But first, fighting fires with fire power. 520 00:32:33,000 --> 00:32:40,000 In Voice Fire Extinguisher, Adam and Jamie have something to shout about. 521 00:32:40,000 --> 00:32:47,000 They've just used amplified sound waves to put out a record-sized flame. 522 00:32:47,000 --> 00:32:53,000 So where does that leave the Myth? 523 00:32:53,000 --> 00:32:55,000 Are we ready to call this one? 524 00:32:55,000 --> 00:32:58,000 I think based on what we've gotten so far, yeah. 525 00:32:58,000 --> 00:33:05,000 I think Charles Kellogg's original claim, the source of our myth that you can put out a fire with an unamplified human voice, is totally busted. 526 00:33:05,000 --> 00:33:08,000 And yet, like any good myth, there is an element of truth here. 527 00:33:08,000 --> 00:33:16,000 Oh no, I could not believe the results we got when our singer was able, although amplified, to put out that candle with his voice. 528 00:33:16,000 --> 00:33:24,000 Yeah, and with a tone generator and a truckload of amplifiers and speakers, we were able to put out a pretty good-sized flame. 529 00:33:24,000 --> 00:33:26,000 Which is really impressive. 530 00:33:26,000 --> 00:33:30,000 And yet, I don't feel like we can let this one rest here. 531 00:33:30,000 --> 00:33:33,000 Well, what about explosives? 532 00:33:33,000 --> 00:33:37,000 I mean, sounds a pressure wave and explosives create a pressure wave. 533 00:33:37,000 --> 00:33:42,000 As far as I know, they actually put out oil rigged fires with explosives. 534 00:33:42,000 --> 00:33:45,000 Sold, let's do it. 535 00:33:45,000 --> 00:33:49,000 Once again, we find ourselves at the Alameda County bomb range. 536 00:33:49,000 --> 00:33:52,000 JD, Frank Doyle are helping us out. 537 00:33:52,000 --> 00:33:56,000 We're going to try and put out the fire with explosives. 538 00:33:56,000 --> 00:34:00,000 In other words, they're going to fight fire with fire power. 539 00:34:00,000 --> 00:34:06,000 A technique that was developed to put out arguably the most dangerous infernos of all, oil well fires. 540 00:34:06,000 --> 00:34:12,000 This technique was made famous by the late Red Adair, is probably the most famous firefighter ever. 541 00:34:12,000 --> 00:34:14,000 He put out over 2,000 fires in his career. 542 00:34:14,000 --> 00:34:16,000 The guy was amazing. 543 00:34:16,000 --> 00:34:18,000 But how exactly did he do it? 544 00:34:18,000 --> 00:34:20,000 Sound is nothing but pressure. 545 00:34:20,000 --> 00:34:27,000 In the case of a sound wave, we've got repeated cycling of this pressure wave over and over again to create something that you hear. 546 00:34:27,000 --> 00:34:36,000 The theory of using an explosive to put out a fire is that the single pressure wave the explosive creates removes all of the oxygen from the fire so it can't burn. 547 00:34:36,000 --> 00:34:40,000 To put this theory to the test, the first thing they're going to need is a fire. 548 00:34:40,000 --> 00:34:42,000 And that's Jamie's department. 549 00:34:42,000 --> 00:34:44,000 OK, sis. 550 00:34:44,000 --> 00:34:47,000 Let's check in 3, 2, 1. 551 00:34:47,000 --> 00:34:49,000 That worked perfectly. 552 00:34:49,000 --> 00:34:51,000 Is that beautiful or what? 553 00:34:51,000 --> 00:34:53,000 Look at that thing. 554 00:34:53,000 --> 00:34:55,000 Yeah, it doesn't get much neater than that. 555 00:34:55,000 --> 00:35:01,000 And first up for the fire in the hole test is black powder, a low velocity explosive. 556 00:35:01,000 --> 00:35:02,000 Are we ready? 557 00:35:02,000 --> 00:35:03,000 We are ready. 558 00:35:03,000 --> 00:35:05,000 This is the borrito. 559 00:35:05,000 --> 00:35:07,000 The black powder borrito. 560 00:35:07,000 --> 00:35:14,000 With the black powder burrito in place, it's time for the three amigos to hunker in the bunker. 561 00:35:14,000 --> 00:35:16,000 OK, are we set? 562 00:35:16,000 --> 00:35:18,000 This is for real. 563 00:35:18,000 --> 00:35:20,000 OK, black powder test. 564 00:35:20,000 --> 00:35:23,000 I'm going to go ahead and ignite now. 565 00:35:23,000 --> 00:35:25,000 Fire, we have fire. 566 00:35:25,000 --> 00:35:27,000 OK, it's all yours now. 567 00:35:27,000 --> 00:35:29,000 OK, pulling in. 568 00:35:29,000 --> 00:35:31,000 We're in place, go. 569 00:35:31,000 --> 00:35:33,000 Beautiful! 570 00:35:33,000 --> 00:35:35,000 That worked perfectly. 571 00:35:35,000 --> 00:35:37,000 That could not have gone better. 572 00:35:37,000 --> 00:35:43,000 The fire rig and explosives delivery system work like a charm. 573 00:35:43,000 --> 00:35:49,000 But through fighting fires, they'd have been better off using black magic than black powder. 574 00:35:49,000 --> 00:35:55,000 Because as the high speed shows, the post boom flame is burning as strong as ever. 575 00:35:55,000 --> 00:36:00,000 So they'll have to try again with something that has a little bit of a spark. 576 00:36:00,000 --> 00:36:05,000 They'll have to try again with something that has a little more bang for their buck. 577 00:36:05,000 --> 00:36:07,000 That's fun! 578 00:36:30,000 --> 00:36:39,000 With all three flunking the Mythbusters memory exam, now it's time to find out if hypnosis will help them remember any critical clues. 579 00:36:39,000 --> 00:36:42,000 Hypnotist Dave Hill thinks it will. 580 00:36:42,000 --> 00:36:46,000 I'm going to do everything in my hypnotic ability to help you gain more memory. 581 00:36:46,000 --> 00:36:48,000 Sound like fun? 582 00:36:48,000 --> 00:36:57,000 Dave spent the last 20 years putting people under, and he's convinced he can refresh memories using the technique of rapid hypnosis. 583 00:36:57,000 --> 00:36:59,000 Just give me your hand if you would. 584 00:36:59,000 --> 00:37:01,000 I'm going to place my hand here if that's okay. 585 00:37:01,000 --> 00:37:06,000 By the time I reach the count of one, you'll be in a very deep state of hypnotic sleep. 586 00:37:06,000 --> 00:37:08,000 That's fine, you're doing perfectly in sleep. 587 00:37:08,000 --> 00:37:12,000 The idea is to overload the mind with sudden, firm commands. 588 00:37:12,000 --> 00:37:14,000 Close your eyes down, my friend. 589 00:37:14,000 --> 00:37:16,000 Roll your eyeballs up to the top. 590 00:37:16,000 --> 00:37:18,000 Try and open your eyelids once, twice. 591 00:37:18,000 --> 00:37:20,000 Notice they don't work. 592 00:37:20,000 --> 00:37:22,000 Way down on sleep. 593 00:37:22,000 --> 00:37:24,000 Way down on sleep. 594 00:37:24,000 --> 00:37:26,000 Now, I want to help you with your memory. 595 00:37:26,000 --> 00:37:45,000 What we're going to now give you in your mind's eye is a wonderful TV set with a remote control that allows you to fast forward, to reverse scenes, to put the scenes in slow motion. 596 00:37:45,000 --> 00:37:51,000 With Dave at the helm, the team retakes the very same test in their hypnotic state. 597 00:37:51,000 --> 00:37:54,000 Did their uniforms have name tags or patches? 598 00:37:54,000 --> 00:37:56,000 Look at them carefully. 599 00:37:59,000 --> 00:38:02,000 What was written on their name tags? 600 00:38:05,000 --> 00:38:09,000 Did either delivery men have a tattoo? 601 00:38:12,000 --> 00:38:20,000 Several probing questions later, and it's time to reemerge and find out if hypnosis helped them remember any additional information 602 00:38:20,000 --> 00:38:22,000 that'll crack the case. 603 00:38:26,000 --> 00:38:30,000 The papers have been graded, and the new scores are in with exciting results. 604 00:38:30,000 --> 00:38:33,000 Carrie has remembered some important dialogue. 605 00:38:33,000 --> 00:38:37,000 You're that guy, dude. You know that guy from the show? They blow stuff up. 606 00:38:37,000 --> 00:38:41,000 This is the guy from the show, right? You're from the show where they blow stuff up. 607 00:38:41,000 --> 00:38:43,000 Wait, I want to call my brother. 608 00:38:43,000 --> 00:38:45,000 You know what? I'm going to call my brother real fast. 609 00:38:45,000 --> 00:38:48,000 All of that, I remembered after we relaxed with the hypnosis. 610 00:38:48,000 --> 00:38:56,000 But it's Grant and Tori that have come up trumps with the types of quality information that would really help a real-life investigation. 611 00:38:56,000 --> 00:39:01,000 I don't even remember name tags, but when we went under hypnosis, a name popped up. 612 00:39:01,000 --> 00:39:02,000 Was it the right name? 613 00:39:02,000 --> 00:39:03,000 Yeah. 614 00:39:03,000 --> 00:39:04,000 What's his name? 615 00:39:04,000 --> 00:39:05,000 Joe. 616 00:39:05,000 --> 00:39:08,000 And Grant was able to describe the tattoo in detail. 617 00:39:08,000 --> 00:39:13,000 For purposes of identifying someone at a crime scene, that's really important information. 618 00:39:13,000 --> 00:39:15,000 I'm totally impressed by the results. 619 00:39:15,000 --> 00:39:20,000 So, thanks to hypnosis, looks like the case might be solved after all. 620 00:39:20,000 --> 00:39:24,000 So, did you guys do any better remembering details under hypnosis? 621 00:39:24,000 --> 00:39:28,000 Well, I remember that one of the guys had a tattoo on his neck under hypnosis. 622 00:39:28,000 --> 00:39:29,000 That's really important. 623 00:39:29,000 --> 00:39:30,000 Oh, yeah. 624 00:39:30,000 --> 00:39:32,000 Tori remembered a name. 625 00:39:32,000 --> 00:39:37,000 I totally did not expect this to work. I mean, given that, are we calling this confirmed? 626 00:39:37,000 --> 00:39:39,000 We have what it takes to be confirmed. 627 00:39:39,000 --> 00:39:40,000 Confirmed? 628 00:39:40,000 --> 00:39:42,000 I'm a believer. 629 00:39:42,000 --> 00:39:43,000 That's amazing. 630 00:39:46,000 --> 00:39:52,000 Coming right up, will an even bigger boom silence the sizzle ring? 631 00:39:52,000 --> 00:39:54,000 Two, one, go. 632 00:40:07,000 --> 00:40:12,000 At the bomb range, the mythbusters are trying to put out fires with explosives. 633 00:40:13,000 --> 00:40:15,000 I'll let Adam explain why. 634 00:40:15,000 --> 00:40:17,000 We have already tried putting out fires with sound. 635 00:40:17,000 --> 00:40:19,000 We started out with our voice. 636 00:40:20,000 --> 00:40:23,000 Then we moved on to sound generating equipment. 637 00:40:24,000 --> 00:40:25,000 Now we're trying explosives. 638 00:40:25,000 --> 00:40:28,000 We have already tried black powder to put out fires. 639 00:40:29,000 --> 00:40:31,000 Now we're going with high explosives. 640 00:40:31,000 --> 00:40:36,000 The throughput here, the key point that travels through all these experiments is attempting to use waves, 641 00:40:36,000 --> 00:40:39,000 either sound waves or shock waves, to put out fire. 642 00:40:39,000 --> 00:40:43,000 And next up in this thread, it's the mythbusters favorite. 643 00:40:43,000 --> 00:40:51,000 We've used high explosives a number of times on the show, exploding safe, exploding pants. 644 00:40:52,000 --> 00:40:57,000 And then there, of course, is the granddaddy of them all, which was 22,000 foot fall. 645 00:40:58,000 --> 00:41:04,000 The thousand pounds of high explosives triggered not only the biggest blast in mythbusters history, 646 00:41:04,000 --> 00:41:10,000 but also, rather alarmingly for this test, set the surrounding hillside ablaze. 647 00:41:10,000 --> 00:41:18,000 Now, in a reversal of fate, Jamie and Adam want to know if the same ingredients can be used to put out fires. 648 00:41:19,000 --> 00:41:22,000 That's high explosive, huh? That is a high explosive. 649 00:41:23,000 --> 00:41:26,000 Wow, it looks more like a taco. 650 00:41:27,000 --> 00:41:31,000 So why would high explosives work when low explosives fail? 651 00:41:32,000 --> 00:41:38,000 Is there a real qualitative difference between a high explosive shock wave and a low explosive shock wave? 652 00:41:38,000 --> 00:41:47,000 Oh, very definitely. A high explosive shock wave is much more intense. It's more of a wall. It has more push and more speed. 653 00:41:49,000 --> 00:41:55,000 It's that push, that immense pressure wave that should apparently be able to extinguish the flame. 654 00:41:55,000 --> 00:42:01,000 This is, can we put out a fire with high explosives? Three, two, one, go. 655 00:42:03,000 --> 00:42:04,000 There it is. 656 00:42:04,000 --> 00:42:06,000 We got fire. Taking out spark. 657 00:42:06,000 --> 00:42:07,000 Spark off. 658 00:42:07,000 --> 00:42:12,000 We're putting explosives into position. It's in. And firing. 659 00:42:14,000 --> 00:42:15,000 Wow! 660 00:42:15,000 --> 00:42:17,000 That was awesome! 661 00:42:17,000 --> 00:42:18,000 Woo! 662 00:42:24,000 --> 00:42:30,000 For Jamie's fire, it was a boom of doom. It's been completely and utterly extinguished. 663 00:42:31,000 --> 00:42:36,000 The high explosives sure did the trick. By removing the oxygen, they suffocated the fire. 664 00:42:37,000 --> 00:42:41,000 But as a firefighting technique, Jamie spotted an obvious flaw. 665 00:42:41,000 --> 00:42:45,000 It's not something you want to put out a fire in your house with or you'll remove your house. 666 00:42:46,000 --> 00:42:52,000 You don't want to put out a fire on your car just because you happen to have some firecrackers in the trunk. 667 00:42:52,000 --> 00:42:58,000 This is a very specialized thing that works sometimes if it's set up exactly right. 668 00:43:00,000 --> 00:43:02,000 So what do you think? Does the fire big enough? 669 00:43:03,000 --> 00:43:04,000 I think so. 670 00:43:06,000 --> 00:43:09,000 Well, talk about fighting fire with fire. 671 00:43:09,000 --> 00:43:12,000 We were able to put out a fire with explosives. 672 00:43:12,000 --> 00:43:19,000 I gotta say, this one has carried us very far afield, but it's been some of the most fun experiments I think we've ever done. 673 00:43:19,000 --> 00:43:23,000 And it was pretty high up there on the don't try this at home list, wasn't it? 674 00:43:23,000 --> 00:43:24,000 Absolutely.