1 00:00:00,000 --> 00:00:11,360 On this episode of MythBusters, a television exclusive as Adam and Jamie sing for a world 2 00:00:11,360 --> 00:00:12,360 first. 3 00:00:12,360 --> 00:00:14,720 I had a nightmare like this once. 4 00:00:14,720 --> 00:00:18,920 Can the human voice really shatter glass? 5 00:00:18,920 --> 00:00:21,840 The build team go green. 6 00:00:21,840 --> 00:00:25,720 They're testing the proverb, a rolling stone gathers no moss. 7 00:00:25,720 --> 00:00:28,000 That is beautiful. 8 00:00:28,000 --> 00:00:35,800 It's the longest experiment in MythBusters history and sparks will fly in a DIY engineering 9 00:00:35,800 --> 00:00:39,480 special. 10 00:00:39,480 --> 00:00:45,360 Can the humble vacuum cleaner be transformed into a jet engine? 11 00:00:45,360 --> 00:00:49,800 Who are the MythBusters? 12 00:00:49,800 --> 00:00:51,120 Adam Savage. 13 00:00:51,120 --> 00:00:54,040 I reject your reality and substitute my own. 14 00:00:54,040 --> 00:00:55,040 And Jamie Heineman. 15 00:00:55,040 --> 00:00:56,280 I kind of like it in here. 16 00:00:56,280 --> 00:00:57,520 It's private. 17 00:00:57,520 --> 00:01:01,440 Between them more than 30 years special effects experience. 18 00:01:01,440 --> 00:01:03,560 That was intense. 19 00:01:03,560 --> 00:01:07,440 They don't just tell the myths. 20 00:01:07,440 --> 00:01:10,640 They put them to the test. 21 00:01:10,640 --> 00:01:23,760 Are you done yet? 22 00:01:23,760 --> 00:01:26,160 I'm ready to stop anytime you want to start talking. 23 00:01:26,160 --> 00:01:30,200 This is the classic story about the opera singer who is capable of breaking a wine 24 00:01:30,200 --> 00:01:34,480 glass using only her voice and achieving exactly the right tone. 25 00:01:34,480 --> 00:01:38,600 So we've got an audio myth on our hands and that means only one stop. 26 00:01:38,600 --> 00:01:42,000 Our friends at Meyer Sound need to be called in to investigate. 27 00:01:42,000 --> 00:01:44,080 I think they're almost honorary MythBusters now. 28 00:01:44,080 --> 00:01:45,840 They've helped us on so many. 29 00:01:45,840 --> 00:01:49,120 Roger Schwenke is Meyer's MythBuster in chief. 30 00:01:49,120 --> 00:01:52,280 He's already busted two urban legends. 31 00:01:52,400 --> 00:01:57,320 Duck Quack's do echo. 32 00:01:57,320 --> 00:02:02,600 And thankfully there's no such thing as the infamous brown note. 33 00:02:02,600 --> 00:02:07,000 Everyone's got to try this. 34 00:02:07,000 --> 00:02:11,920 Now Meyer's mission is to find out whether sound waves can be strong enough to shatter 35 00:02:11,920 --> 00:02:16,680 crystal glass. 36 00:02:16,680 --> 00:02:20,880 Everyone's heard of this musical myth but is it truly possible? 37 00:02:20,880 --> 00:02:26,240 Well if anyone knows, it's Meyer's sound. 38 00:02:26,240 --> 00:02:32,080 So Roger, have you heard the myth about the opera singer that's able to break a wine glass 39 00:02:32,080 --> 00:02:33,080 with her voice? 40 00:02:33,080 --> 00:02:35,920 I've heard that myth and uh... 41 00:02:35,920 --> 00:02:36,920 What do you think? 42 00:02:36,920 --> 00:02:38,200 I'd like to think that it's true. 43 00:02:38,200 --> 00:02:42,080 I think it'd be really impressive if we could break a wine glass with sound so I'm really 44 00:02:42,080 --> 00:02:44,200 eager to try it. 45 00:02:44,200 --> 00:02:46,040 Eager to try breaking stuff? 46 00:02:46,040 --> 00:02:48,760 No wonder this guy's an honorary MythBuster. 47 00:02:48,760 --> 00:02:55,640 And already he's got a glass-smashing plan that's all to do with resonance. 48 00:02:55,640 --> 00:03:00,120 So first I want to bring a glass over and we'll measure it and see what its resonant 49 00:03:00,120 --> 00:03:04,600 frequency is and then we'll play that frequency back through the speaker and see if we can 50 00:03:04,600 --> 00:03:05,600 break it. 51 00:03:05,600 --> 00:03:09,920 So the theory is that the tone you hear when you hit it is the same tone that will potentially 52 00:03:09,920 --> 00:03:10,920 break it. 53 00:03:10,920 --> 00:03:11,920 Correct. 54 00:03:11,920 --> 00:03:15,800 A crystal glass has a natural resonance. 55 00:03:15,800 --> 00:03:22,080 This is the frequency at which it most efficiently turns sound waves into physical movement. 56 00:03:22,080 --> 00:03:30,160 Play a glass its own resonant frequency but loud and it may move so much that it explodes. 57 00:03:30,160 --> 00:03:32,280 Is this a good distance here? 58 00:03:32,280 --> 00:03:38,120 Uh... yeah that's fine. 59 00:03:38,120 --> 00:03:45,560 They're using lead crystal as it's the most efficient at transforming sound into motion. 60 00:03:45,560 --> 00:03:53,760 This lowest peak here is the fundamental frequency and I'm reading off here 562 hertz so that's 61 00:03:53,760 --> 00:03:55,680 where we should start. 62 00:03:55,680 --> 00:04:03,800 With the computer primed to belt out a pure 562 hertz tone it's mythbusting time. 63 00:04:03,800 --> 00:04:09,080 So this is MythBuster's wine glass breaking test number one. 64 00:04:09,080 --> 00:04:12,880 Simply playing a tone through the speaker to the glass. 65 00:04:12,880 --> 00:04:16,680 I'm really sorry. 66 00:04:16,680 --> 00:04:23,720 I need to actually plug that speaker into something. 67 00:04:23,720 --> 00:04:26,120 Details, details. 68 00:04:26,120 --> 00:04:28,960 Even the Meyer MythBuster can make mistakes. 69 00:04:28,960 --> 00:04:38,440 Let's try that again. 70 00:04:38,440 --> 00:04:40,240 Nothing. 71 00:04:40,240 --> 00:04:46,520 But in opera it's not over till the fat lady sings and Rogers had a harmonious idea. 72 00:04:46,520 --> 00:04:52,320 When you listen to the glass it has many harmonics above the fundamental frequency and so maybe 73 00:04:52,320 --> 00:04:57,120 it's not the fundamental that breaks it maybe we need to produce one of those harmonics. 74 00:04:57,120 --> 00:05:03,520 Up to now Rogers just been playing the fundamental frequency but there are also many other equally 75 00:05:03,520 --> 00:05:08,280 spaced smaller peaks, the harmonics. 76 00:05:08,280 --> 00:05:14,440 So this time the computer set to blast out the full harmonic sound, an exact match of 77 00:05:14,440 --> 00:05:16,560 the glass. 78 00:05:16,560 --> 00:05:26,400 Adam also throws a straw into the mix to help see if the glass is moving at all. 79 00:05:26,400 --> 00:05:29,120 Adam's straw dances. 80 00:05:29,120 --> 00:05:32,400 This glass really is vibrating. 81 00:05:32,400 --> 00:05:36,640 Just check out the high speed. 82 00:05:36,640 --> 00:05:42,240 The glass is as wobbly as jello but not wobbly enough to implode. 83 00:05:42,240 --> 00:05:46,480 To the MythBusters it's just mystifying. 84 00:05:46,480 --> 00:05:49,720 So that can be busted right there. 85 00:05:49,720 --> 00:05:51,960 I don't know that we've exhausted all the possibilities. 86 00:05:51,960 --> 00:05:55,720 Yeah there's something we're missing here because it's really aggressively moving that 87 00:05:55,720 --> 00:05:56,720 glass. 88 00:05:56,720 --> 00:06:00,160 The question is why isn't it breaking the glass? 89 00:06:00,160 --> 00:06:05,440 That is indeed the question and while Adam and Jamie ponder the answer the build team 90 00:06:05,440 --> 00:06:12,440 are cracking on with another myth. 91 00:06:12,440 --> 00:06:17,720 The MythBusters build team are having a barrel of laughs. 92 00:06:17,720 --> 00:06:23,600 They're getting started on the longest experiment in MythBusters history. 93 00:06:23,600 --> 00:06:30,200 They'll need their green fingers as they once again take on conventional wisdom. 94 00:06:30,200 --> 00:06:35,400 Exciting. 95 00:06:35,400 --> 00:06:38,160 Finding a needle in a haystack was actually pretty fun. 96 00:06:38,160 --> 00:06:39,160 What do you think? 97 00:06:39,160 --> 00:06:43,280 Should we do more proverbs and sayings like that? 98 00:06:43,280 --> 00:06:45,800 Finding the needle in a haystack was fun? 99 00:06:45,800 --> 00:06:50,480 Jamie's forgotten that testing that proverb was one of the toughest myth busting days 100 00:06:50,480 --> 00:06:55,040 ever but it's clearly not put them off. 101 00:06:55,040 --> 00:06:58,760 What about the one a rolling stone gathers no moss? 102 00:06:58,760 --> 00:07:00,880 Or does it? 103 00:07:00,880 --> 00:07:04,600 You know I honestly can say I've never thought about it but that would be interesting to 104 00:07:04,600 --> 00:07:05,600 find out. 105 00:07:05,600 --> 00:07:06,600 Should be possible to do. 106 00:07:06,600 --> 00:07:10,240 Alright well I want to get going on this one because I want to bust this proverb wide 107 00:07:10,240 --> 00:07:12,240 open. 108 00:07:12,240 --> 00:07:23,640 First stop for this myth is the Moss Store, also known as the forest. 109 00:07:23,640 --> 00:07:28,680 It seems like the build team have found their man, Brent Mishler, a moss professor. 110 00:07:28,680 --> 00:07:32,920 Well I'm into moss for various reasons and I would be into them even if they weren't 111 00:07:32,920 --> 00:07:36,320 important in the ecosystem but as it happens they are. 112 00:07:36,320 --> 00:07:38,720 This guy really is Dr. Moss. 113 00:07:38,720 --> 00:07:44,160 So there's a lot of moss here, can we just grab this and put it on a rock? 114 00:07:44,160 --> 00:07:48,040 Well probably this would not be the best choice because these are not the same species that 115 00:07:48,040 --> 00:07:51,520 grow on the rock here. 116 00:07:51,520 --> 00:07:55,200 They're barking up the wrong tree with this moss. 117 00:07:55,200 --> 00:08:01,160 Our herb hunters need some rock moss and they're leaving no stone unturned. 118 00:08:01,160 --> 00:08:02,160 Seems pretty strong. 119 00:08:02,400 --> 00:08:04,400 It doesn't break up in your hands. 120 00:08:04,400 --> 00:08:08,240 Yeah that would be a fine one to try. 121 00:08:08,240 --> 00:08:10,000 So how do we get the moss going now? 122 00:08:10,000 --> 00:08:11,000 What do we do next? 123 00:08:11,000 --> 00:08:13,440 I think we'll probably try buttermilk. 124 00:08:13,440 --> 00:08:17,560 Maybe about equal parts of buttermilk and moss and grind it up in a coffee grinder. 125 00:08:17,560 --> 00:08:23,560 Then you can kind of coat the rocks in it and coat the run in it. 126 00:08:23,560 --> 00:08:25,640 Is Dr. Moss serious? 127 00:08:25,640 --> 00:08:30,880 Buttermilk and moss sounds more like a Californian protein shake. 128 00:08:31,080 --> 00:08:33,680 Moss collecting step one accomplished. 129 00:08:37,280 --> 00:08:40,880 Step two means it's time to shop till you rock. 130 00:08:40,880 --> 00:08:46,040 You've heard the people say a rolling stone gathers no moss. 131 00:08:46,040 --> 00:08:47,040 Sure. 132 00:08:47,040 --> 00:08:48,440 Well we're trying to prove that. 133 00:08:48,440 --> 00:08:49,880 Great, well how can I help you? 134 00:08:49,880 --> 00:08:52,240 We have a lot of rocks to select from. 135 00:08:52,240 --> 00:08:54,160 Ain't that the truth? 136 00:08:54,160 --> 00:08:59,600 This place has more rocks than a Flintstones fill. 137 00:08:59,600 --> 00:09:05,520 After much rocky reflection the rolling stones are selected and chopped up into identical 138 00:09:05,520 --> 00:09:07,520 easy to roll cylinders. 139 00:09:07,520 --> 00:09:13,520 Finally, Tori and Scotty can get some satisfaction. 140 00:09:19,560 --> 00:09:24,480 The build team are proverb busting as they test whether a rolling stone really gathers 141 00:09:24,480 --> 00:09:25,960 no moss. 142 00:09:26,720 --> 00:09:28,040 Their shopping list? 143 00:09:28,040 --> 00:09:29,040 Moss. 144 00:09:29,040 --> 00:09:30,040 Check. 145 00:09:30,040 --> 00:09:31,040 Stones. 146 00:09:31,040 --> 00:09:32,040 Check. 147 00:09:33,040 --> 00:09:36,680 Stage three means building the rolling device. 148 00:09:36,680 --> 00:09:40,720 The tricky part is going to be getting rocks to roll continuously for months. 149 00:09:40,720 --> 00:09:43,680 We're going to have to build some kind of rig that does that. 150 00:09:43,680 --> 00:09:47,560 Yeah, you'll have to make something that also withstands the environment because obviously 151 00:09:47,560 --> 00:09:50,160 there has to be moisture and irrigation in there. 152 00:09:50,160 --> 00:09:52,840 Well it'll be a nice simple experiment. 153 00:09:52,840 --> 00:09:55,880 Something will set up, let it run, see what happens. 154 00:09:56,000 --> 00:09:58,240 Simple sounds good. 155 00:09:58,240 --> 00:10:02,880 The plan is to build an irrigated barrel which will be split in two. 156 00:10:02,880 --> 00:10:08,120 The control half will be stationary while the test half will turn. 157 00:10:08,120 --> 00:10:12,640 Within both halves there'll be three rocks each sitting in their own individual track 158 00:10:12,640 --> 00:10:13,800 way. 159 00:10:13,800 --> 00:10:15,800 Will any gather moss? 160 00:10:25,880 --> 00:10:30,960 It's starting to take shape. 161 00:10:30,960 --> 00:10:32,920 This is one of the drums. 162 00:10:32,920 --> 00:10:38,640 This here is one of the tracks inside the drum and this is where the rock is going to roll. 163 00:10:38,640 --> 00:10:40,400 This whole drum will be rolling. 164 00:10:40,400 --> 00:10:46,240 This will just stay at the bottom and just continue to roll and collect moss hopefully. 165 00:10:46,240 --> 00:10:54,280 While Tori tests the rolling rigs, Carrie shapes up to shape the stones. 166 00:10:54,920 --> 00:10:59,080 I'm roughing up this rock so we have one smooth, one rough. 167 00:10:59,080 --> 00:11:03,080 The rock guy reckons you get more moss on a roughed up stone. 168 00:11:03,080 --> 00:11:04,160 Sounds about right. 169 00:11:04,160 --> 00:11:09,640 A rough rock will have all sorts of nooks and crannies where moss could get a grip. 170 00:11:09,640 --> 00:11:12,320 Hey, look what I got from Jamie. 171 00:11:12,320 --> 00:11:17,400 As for the revolving rig, there's no need to reinvent the wheel because Jamie's come 172 00:11:17,400 --> 00:11:18,400 up trumps. 173 00:11:18,400 --> 00:11:21,400 Hey, look at that. 174 00:11:21,400 --> 00:11:23,960 That's as fast as it goes. 175 00:11:23,960 --> 00:11:27,560 Which is more than ample for this man. 176 00:11:27,560 --> 00:11:29,680 I think this is going to be perfect. 177 00:11:29,680 --> 00:11:32,720 Look at how much torque this thing has. 178 00:11:32,720 --> 00:11:35,720 At least enough to rotate these slackers. 179 00:11:35,720 --> 00:11:40,880 All right, team, let's go to work. 180 00:11:40,880 --> 00:11:49,000 While Scotty creates a stand for the spinning barrel, Carrie keeps roughing up those rocks. 181 00:11:49,040 --> 00:11:58,000 Tori adds some matting to keep the rolling tracks moist for the moss. 182 00:11:58,000 --> 00:12:03,000 Everything's coming together, lock, stock and barrel. 183 00:12:03,000 --> 00:12:10,240 Time to put it to the test. 184 00:12:10,240 --> 00:12:11,240 This is beautiful. 185 00:12:11,240 --> 00:12:13,680 It's like watching paint dry. 186 00:12:13,680 --> 00:12:15,520 It's way more exciting now. 187 00:12:15,520 --> 00:12:18,240 Yeah, it's a little bit more exciting than watching paint dry. 188 00:12:18,440 --> 00:12:20,440 Uh-oh, we got a sticker. 189 00:12:20,440 --> 00:12:25,560 Oh, that was close. 190 00:12:25,560 --> 00:12:27,760 We almost had a situation there. 191 00:12:27,760 --> 00:12:30,040 Hey, what's up, buddy? 192 00:12:30,040 --> 00:12:31,040 That is beautiful. 193 00:12:31,040 --> 00:12:33,600 Look at that. 194 00:12:33,600 --> 00:12:39,320 What if it turns out that all your stones gather some fungi or moss? 195 00:12:39,320 --> 00:12:43,680 Are you going to look towards the material that definitely does not gather moss when 196 00:12:43,680 --> 00:12:44,680 it rolls? 197 00:12:44,680 --> 00:12:46,880 Something naturally occurring that would never gather moss. 198 00:12:46,880 --> 00:12:48,880 Can we cross that bridge when we get to it? 199 00:12:48,880 --> 00:12:51,840 Because I really don't think we're going to get any moss on these. 200 00:12:51,840 --> 00:12:56,240 If there's one thing I've learned so far, it's the nothing I think ever has any bearing 201 00:12:56,240 --> 00:12:57,240 on the results. 202 00:12:57,240 --> 00:12:59,360 Well, guys, it looks really good. 203 00:12:59,360 --> 00:13:03,120 Have some fun rolling all those stones. 204 00:13:03,120 --> 00:13:08,920 At last, the build team put the final touches to the rolling rig. 205 00:13:08,920 --> 00:13:14,440 All that remains is to coat the stones in the buttermilk and moss batter. 206 00:13:14,440 --> 00:13:19,120 But are they doing it right? 207 00:13:19,120 --> 00:13:21,600 That was terrible. 208 00:13:21,600 --> 00:13:22,600 Oh, yeah. 209 00:13:22,600 --> 00:13:25,160 Who wants to taste it? 210 00:13:25,160 --> 00:13:26,360 Sorry. 211 00:13:26,360 --> 00:13:29,400 And how ground up is it? 212 00:13:29,400 --> 00:13:30,400 Not at all. 213 00:13:30,400 --> 00:13:32,600 It's just a soggy mess of moss. 214 00:13:32,600 --> 00:13:36,760 Tori opts for a more unusual kitchen tool, the hammer drill. 215 00:13:36,760 --> 00:13:38,200 Bring it up and hit your feet. 216 00:13:38,200 --> 00:13:44,120 If it's worth doing, it's worth overdoing. 217 00:13:44,120 --> 00:13:47,620 Even with the super stirrer, the moss stays together. 218 00:13:47,620 --> 00:13:50,320 This is not what the moss man instructed. 219 00:13:50,320 --> 00:13:52,480 He wanted it chopped fine. 220 00:13:52,480 --> 00:13:53,480 It's good enough. 221 00:13:53,480 --> 00:13:58,480 Equal parts of buttermilk and moss and grind it up in a coffee grinder. 222 00:13:58,480 --> 00:14:04,000 A hammer drill is no coffee grinder, but the team seems satisfied and begin the stone 223 00:14:04,000 --> 00:14:11,360 mirroring, or inoculation, to a scientist. 224 00:14:11,360 --> 00:14:16,080 Our rocks are well-gooed and we're putting them into the rig now. 225 00:14:16,080 --> 00:14:21,560 The team put a roughed up rock, a smooth rock, and a mossy rock from the forest in both the 226 00:14:21,560 --> 00:14:26,320 stationary control side and the revolving test side of the rig. 227 00:14:26,320 --> 00:14:28,800 All right, so now we wait. 228 00:14:28,800 --> 00:14:30,800 Now we wait. 229 00:14:30,800 --> 00:14:31,800 Exciting. 230 00:14:31,920 --> 00:14:42,000 Adam and Jamie are attempting to bust a myth of operatic proportions. 231 00:14:42,000 --> 00:14:47,240 They're trying to learn if a singer can shatter a wine glass with just their voice. 232 00:14:47,240 --> 00:14:51,240 You know, the interesting thing about this myth is while tons of people have claimed 233 00:14:51,240 --> 00:14:55,960 to be able to break glass with their voice, our researchers have yet to come up with a 234 00:14:55,960 --> 00:14:58,640 single confirmed case of it. 235 00:14:59,000 --> 00:15:03,160 You know, well the first one I know of was the famous opera singer Caruso, who claimed 236 00:15:03,160 --> 00:15:07,560 to have done it, but then after he died his wife said he actually didn't. 237 00:15:07,560 --> 00:15:12,760 Yeah, the famous advertisement for Memorex where Elefitz Gerald's voice shatters the 238 00:15:12,760 --> 00:15:14,760 glass. 239 00:15:14,760 --> 00:15:16,360 Believe it. 240 00:15:16,360 --> 00:15:21,240 Elefitz Gerald on Memorex cassette tape with MRX2 Oxide. 241 00:15:21,240 --> 00:15:25,120 Can Memorex shatter the glass? 242 00:15:25,120 --> 00:15:29,480 Well that seemed to work, but they did use amplification. 243 00:15:29,480 --> 00:15:34,080 If we get a singer breaking glass unassisted, I believe it's the very first time it's been 244 00:15:34,080 --> 00:15:35,640 confirmed on camera. 245 00:15:35,640 --> 00:15:38,640 A myth buster exclusive. 246 00:15:38,640 --> 00:15:44,280 Seems Adam's forgetting that so far they've broken nothing, but Meyer's sound may just 247 00:15:44,280 --> 00:15:51,200 have unlocked the glass breaking secret and the key, a board with a two inch hole through 248 00:15:51,200 --> 00:15:53,400 it. 249 00:15:53,400 --> 00:15:54,400 But how's that going to help? 250 00:15:54,680 --> 00:15:59,160 It's going to change the directionality, it's going to change the distribution of pressure 251 00:15:59,160 --> 00:16:07,280 in the near field, so it's going to cause an awful lot of different acoustical phenomenon. 252 00:16:07,280 --> 00:16:11,760 Roger's confident that this holy board is going to do the trick. 253 00:16:11,760 --> 00:16:14,280 Okay, everyone ready? 254 00:16:14,280 --> 00:16:15,960 Ready when you are. 255 00:16:15,960 --> 00:16:18,240 Three, two, one. 256 00:16:18,240 --> 00:16:21,720 Oh there you go. 257 00:16:21,720 --> 00:16:23,440 Okay, that's kind of unexpected. 258 00:16:24,440 --> 00:16:25,440 They've cracked it. 259 00:16:25,440 --> 00:16:30,840 The two inch hole does the job and proves that sound can break glass. 260 00:16:30,840 --> 00:16:35,560 Next, they need to find a singer brave enough to try. 261 00:16:35,560 --> 00:16:37,280 It's so endlessly entertaining. 262 00:16:37,280 --> 00:16:44,480 I'd pay to see this. 263 00:16:44,480 --> 00:16:50,440 The myth busters are testing whether the human voice can break glass and for Adam and Jamie, 264 00:16:50,440 --> 00:16:59,920 it's time to stop its sound school. 265 00:16:59,920 --> 00:17:05,160 We're here in the Castro district of San Francisco and we're about to test whether we can break 266 00:17:05,160 --> 00:17:08,800 a wine glass using a human voice. 267 00:17:08,800 --> 00:17:14,280 This myth needs vocal power, but forget opera singers, Adam and Jamie have gone for full 268 00:17:14,280 --> 00:17:15,280 power. 269 00:17:15,280 --> 00:17:21,000 The power of rock singer Jamie Vendera. 270 00:17:21,000 --> 00:17:22,000 Hi Jamie. 271 00:17:22,000 --> 00:17:23,000 Hi Jamie. 272 00:17:23,000 --> 00:17:24,000 I'm Jamie. 273 00:17:24,000 --> 00:17:25,000 I'm Jamie. 274 00:17:25,000 --> 00:17:26,000 Good to meet you. 275 00:17:26,000 --> 00:17:27,000 Good to meet you. 276 00:17:27,000 --> 00:17:31,960 So Jamie, have you heard the story that it's possible to break a wine glass with a human 277 00:17:31,960 --> 00:17:32,960 voice? 278 00:17:32,960 --> 00:17:33,960 Actually, I have. 279 00:17:33,960 --> 00:17:38,880 One of my vocal teachers, a man named Jim Gillette from a band called Nitro, has done 280 00:17:38,880 --> 00:17:40,800 it for years back in the 80s. 281 00:17:40,800 --> 00:17:45,120 So I know it can be done. 282 00:17:45,120 --> 00:17:51,000 Nitro claimed to be the fastest, loudest and highest sound of the late 80s. 283 00:17:51,000 --> 00:17:53,760 And who would disagree? 284 00:17:53,760 --> 00:17:59,080 Jamie Vendera reckons that Nitro used to break glasses through amplification before every 285 00:17:59,080 --> 00:18:04,920 concert. 286 00:18:04,920 --> 00:18:10,960 Before anyone tries to sing unassisted, it's time to put Nitro and Ella Fitzgerald to the 287 00:18:10,960 --> 00:18:11,960 test. 288 00:18:11,960 --> 00:18:16,920 Can singing through speakers break glass? 289 00:18:16,920 --> 00:18:20,280 I've got to protect the mighty Whirlitzer. 290 00:18:20,280 --> 00:18:24,040 The Whirlitzer here is one of the most famous features of the Castro Theater and the guy 291 00:18:24,040 --> 00:18:25,040 that plays it. 292 00:18:25,040 --> 00:18:30,320 I think it would be bad if he got glass shards in the tips of his fingers. 293 00:18:30,320 --> 00:18:38,880 As the curtain call draws nearer, Jamie Vendera concentrates on finding the perfect glass. 294 00:18:38,880 --> 00:18:40,400 Some of these are a little more dead than the others. 295 00:18:40,400 --> 00:18:43,200 If you flick it, you'll hear how that rings. 296 00:18:43,200 --> 00:18:45,800 I mean, it sounds almost like the ring has a kind of curved. 297 00:18:45,800 --> 00:18:46,800 Exactly. 298 00:18:46,800 --> 00:18:48,840 That's what you're looking for. 299 00:18:48,840 --> 00:18:54,120 Just like at Meyer Sound, there'll be the speaker, the mysterious board with hole, and 300 00:18:54,120 --> 00:18:55,480 then the glass. 301 00:18:55,480 --> 00:19:01,720 It's time for our heavy metal maestro to step up to the mic. 302 00:19:01,720 --> 00:19:07,600 Can you hear that okay, Jamie? 303 00:19:07,600 --> 00:19:12,080 Bingo. 304 00:19:12,080 --> 00:19:16,040 Yeah! 305 00:19:16,040 --> 00:19:18,600 Is it supposed to be that easy? 306 00:19:18,600 --> 00:19:24,200 So the practice professional can use amplification to break glass. 307 00:19:24,200 --> 00:19:29,320 But how about an amateur voice like say, Adam and Jamie's? 308 00:19:29,320 --> 00:19:32,160 I can't wait to try it. 309 00:19:32,520 --> 00:19:37,880 Before they let rip, the build team are plotting a DIY disaster. 310 00:19:37,880 --> 00:19:44,320 The trustworthy vacuum cleaner. 311 00:19:44,320 --> 00:19:47,000 Every home should have one, right? 312 00:19:47,000 --> 00:19:49,520 You want to see if you can get a fire going here? 313 00:19:49,520 --> 00:19:51,480 Well, maybe not. 314 00:19:51,480 --> 00:19:56,280 After all, this myth is about the guy whose vac turned into a jet engine, and the build 315 00:19:56,280 --> 00:20:06,280 team are going to put this to the test. 316 00:20:06,280 --> 00:20:09,040 Guy was cleaning his pool, and he heard a huge explosion. 317 00:20:09,040 --> 00:20:12,240 So he went to his neighbor's house to find out what had happened, and it turned out that 318 00:20:12,240 --> 00:20:17,640 this guy was using a shop vac to try to get the sediment off the bottom of a gas tank 319 00:20:17,640 --> 00:20:18,840 from his boat. 320 00:20:18,840 --> 00:20:22,720 And when it started to fume, it went through the shop vac, and basically turned it into 321 00:20:22,720 --> 00:20:24,160 a turbine engine. 322 00:20:24,160 --> 00:20:25,440 So what's your plan? 323 00:20:25,440 --> 00:20:28,760 Scotty and I are going to go get a shop vac, and we're going to try to suck up some gasoline 324 00:20:28,760 --> 00:20:29,760 and see what happens. 325 00:20:29,760 --> 00:20:35,680 We're going to go clean the pool, and if we hear any big explosions, we're coming ready. 326 00:20:35,680 --> 00:20:39,640 Can a vacuum cleaner really transform into a jet engine? 327 00:20:39,640 --> 00:20:43,480 The girls of all they need to test this dangerous myth. 328 00:20:43,480 --> 00:20:49,400 One tank of gas, and one shop vac. 329 00:20:49,400 --> 00:20:55,960 For our first experiment, we have our shop vac hooked up to our gas can, and the gas 330 00:20:55,960 --> 00:20:59,840 can just has a tiny bit of gas in there, so we're just going to get fumes with this first 331 00:20:59,840 --> 00:21:00,840 one. 332 00:21:00,840 --> 00:21:04,560 But it's the fumes that are the most flammable part. 333 00:21:04,560 --> 00:21:08,200 So let's get this a really running go. 334 00:21:08,200 --> 00:21:10,400 Let's give it a good five minutes before we shut it off. 335 00:21:10,400 --> 00:21:11,400 All right. 336 00:21:11,400 --> 00:21:14,520 If it doesn't go in five minutes, it ain't going to go. 337 00:21:14,520 --> 00:21:18,240 Three, two, one. 338 00:21:18,760 --> 00:21:27,120 As Scotty said, if it doesn't go in five minutes, it ain't going to go. 339 00:21:27,120 --> 00:21:29,840 This myth may not last much longer. 340 00:21:29,840 --> 00:21:35,640 Oh, there must be something to this myth because the warning label to avoid personal injury 341 00:21:35,640 --> 00:21:40,480 or property damage, do not pick up flammable, combustible, or hot materials. 342 00:21:40,480 --> 00:21:41,760 There's got to be some truth to this. 343 00:21:41,760 --> 00:21:43,280 It's got to blow up somewhere. 344 00:21:43,280 --> 00:21:45,040 You'd think so. 345 00:21:45,040 --> 00:21:47,800 But right now, it just ain't sparking. 346 00:21:47,840 --> 00:21:52,200 If it's going to mutate into a jet engine, it'll need some encouragement. 347 00:21:52,200 --> 00:21:58,160 I haven't actually taken a vacuum cleaner apart before, but this one, the motor where 348 00:21:58,160 --> 00:22:03,480 the brushes would be, is isolated from the tank and from any kind of air fumes that would 349 00:22:03,480 --> 00:22:05,160 be inside the tank. 350 00:22:05,160 --> 00:22:09,560 So any sparking will happen in a place where the fumes can't get to. 351 00:22:09,560 --> 00:22:13,520 Scotty reckons that all new vaks have this safety feature. 352 00:22:13,520 --> 00:22:16,960 Maybe it's only older models that are likely to explode. 353 00:22:16,960 --> 00:22:22,960 I guess we can wrap this one up because it's pretty much busted as far as the new vacuums 354 00:22:22,960 --> 00:22:23,960 go. 355 00:22:23,960 --> 00:22:24,960 Highly unlikely, anyway. 356 00:22:31,960 --> 00:22:33,480 What the hell was that? 357 00:22:33,480 --> 00:22:34,480 That was sparks. 358 00:22:34,480 --> 00:22:36,480 What was it doing? 359 00:22:36,480 --> 00:22:37,480 Oh. 360 00:22:37,480 --> 00:22:38,480 Chopped through the wires. 361 00:22:38,480 --> 00:22:39,480 Well, maybe that's how we got them. 362 00:22:39,480 --> 00:22:40,480 That'll do it every time. 363 00:22:41,440 --> 00:22:46,440 This could be just one of those Mythbusters Eureka moments. 364 00:22:50,440 --> 00:22:52,240 Scotty, I think that was a happy mistake. 365 00:22:52,240 --> 00:22:56,040 I think we can actually throw a little likely into our unlikely scenario. 366 00:22:56,040 --> 00:22:58,440 What if the vacuum cleaner was shorting out? 367 00:22:58,440 --> 00:22:59,440 It's a possibility. 368 00:22:59,440 --> 00:23:02,000 It would definitely make sparks. 369 00:23:02,000 --> 00:23:07,240 But even with the horrible home wiring job, the fumes still won't be able to get to where 370 00:23:07,240 --> 00:23:08,240 the spark is. 371 00:23:09,000 --> 00:23:10,000 I want to bang. 372 00:23:10,000 --> 00:23:15,000 Let's make the optimal, most beautiful conditions for this thing to blow up. 373 00:23:15,000 --> 00:23:20,000 That means drilling a hole that will allow the fumes to get to the spark. 374 00:23:20,000 --> 00:23:25,000 If Scotty's right that the shop-backed design has changed, then this still is testing our 375 00:23:25,000 --> 00:23:26,000 myth. 376 00:23:26,000 --> 00:23:31,000 This time, the bill team have gone all out for an explosion. 377 00:23:31,000 --> 00:23:34,000 Gas directly in the vacuum. 378 00:23:34,760 --> 00:23:39,760 A homemade short circuit and some air vents leading to the sparks. 379 00:23:39,760 --> 00:23:46,760 This goes against all health and safety rules, but these guys are trained professionals. 380 00:23:46,760 --> 00:23:48,760 Don't try this one at home. 381 00:23:48,760 --> 00:23:53,760 Three, two, one. 382 00:23:53,760 --> 00:23:59,760 Despite their best efforts, a jet engine this isn't. 383 00:24:00,520 --> 00:24:07,520 For a confused and disconsolate Scotty, it's back to the drawing board. 384 00:24:11,120 --> 00:24:18,120 Scotty and I tried everything with the shop-backed to try to make a turbine engine. 385 00:24:18,640 --> 00:24:24,640 What we basically figured out is that the airflow is completely isolated from the motor. 386 00:24:24,640 --> 00:24:26,560 On purpose, I would imagine. 387 00:24:26,560 --> 00:24:27,560 Does that end? 388 00:24:27,560 --> 00:24:28,560 Is it busted? 389 00:24:28,560 --> 00:24:29,560 Well, we're not sure yet. 390 00:24:29,560 --> 00:24:31,160 The design and the motors have changed. 391 00:24:31,160 --> 00:24:34,720 So I'm probably going to go visit your nemesis down at the vacuum shop. 392 00:24:34,720 --> 00:24:38,720 My guideline when you're there is just keep your lips away from the spinning things. 393 00:24:38,720 --> 00:24:42,720 One spitting twice shy. 394 00:24:42,720 --> 00:24:49,720 Rarely is that proverb used in the context of vacuum cleaners. 395 00:24:49,720 --> 00:24:52,720 Are you Peter? 396 00:24:52,720 --> 00:24:53,720 Yes, I am. 397 00:24:53,720 --> 00:24:54,720 I'm Tori. 398 00:24:54,720 --> 00:24:55,720 Tori, glad to meet you. 399 00:24:55,720 --> 00:24:56,720 Good to meet you. 400 00:24:56,720 --> 00:24:59,720 I'm glad that you took care of him and maybe you can help me out. 401 00:24:59,720 --> 00:25:03,720 Well, if it's to do with vacuum cleaners, I probably could help you out here. 402 00:25:03,720 --> 00:25:06,840 Well, we're trying to do, I don't know if you've ever heard of the myth, the exploding 403 00:25:06,840 --> 00:25:11,760 vacuum cleaner where somebody was actually vacuuming up gasoline and a spark from the 404 00:25:11,760 --> 00:25:16,960 motor caused the whole vacuum cleaner to explode and he went rocketing around the shop. 405 00:25:16,960 --> 00:25:21,960 Oh yeah, if you've got papers and you've got spark, you've got a fire going. 406 00:25:21,960 --> 00:25:22,960 Excellent. 407 00:25:22,960 --> 00:25:25,960 You want to see if you can get a fire going here? 408 00:25:25,960 --> 00:25:26,960 What? 409 00:25:26,960 --> 00:25:27,960 Right here in the store? 410 00:25:27,960 --> 00:25:30,960 Wait, you got a fire extinguisher in case? 411 00:25:30,960 --> 00:25:34,960 Oh, I got fire extinguishers all over the store. 412 00:25:34,960 --> 00:25:35,960 Okay. 413 00:25:35,960 --> 00:25:36,960 Need some help? 414 00:25:36,960 --> 00:25:38,960 I have a little bit more spark. 415 00:25:38,960 --> 00:25:40,960 There we go. 416 00:25:40,960 --> 00:25:44,840 Shop vac plus fumes can equal fire. 417 00:25:44,840 --> 00:25:46,320 This myth ain't busted yet. 418 00:25:46,320 --> 00:25:50,480 That's what I was saying, you get those fumes going and a little spark, you get something 419 00:25:50,480 --> 00:25:51,980 burning. 420 00:25:51,980 --> 00:25:58,020 Armed with the knowledge that vacuum cleaners can burst into flame, Tori next needs to turn 421 00:25:58,020 --> 00:26:00,020 one into a jet engine. 422 00:26:00,020 --> 00:26:06,660 You guys have a good day. 423 00:26:06,660 --> 00:26:12,340 Flaming vacuum cleaners, Tori's testing the myth that the everyday vac can mutate into 424 00:26:12,340 --> 00:26:13,340 a jet engine. 425 00:26:13,340 --> 00:26:16,980 You got some good fire. 426 00:26:16,980 --> 00:26:19,180 So Tori, you got any results yet on this one? 427 00:26:19,180 --> 00:26:22,940 Well, what we were trying to do is to see if an older version of a vacuum motor would 428 00:26:22,940 --> 00:26:28,980 ignite gasoline and the guy at the shop pretty much demonstrated that in an extreme way. 429 00:26:28,980 --> 00:26:33,900 So we've proven that it can light the gasoline, but in no way was it a jet engine. 430 00:26:33,900 --> 00:26:35,740 Well, you know what that means. 431 00:26:35,740 --> 00:26:36,820 I think I do. 432 00:26:36,820 --> 00:26:40,660 This being myth busters, we have to see if there's any way that we can actually create 433 00:26:40,660 --> 00:26:42,940 a jet engine out of vacuum cleaner parts. 434 00:26:42,940 --> 00:26:44,300 You must have read my resume. 435 00:26:44,300 --> 00:26:46,340 I'm the man for your job. 436 00:26:46,340 --> 00:26:51,100 The build team recreated the circumstances of this myth and got nowhere. 437 00:26:51,100 --> 00:26:54,660 So now Tori needs to replicate its results. 438 00:26:54,660 --> 00:26:59,660 Hard core thrust. 439 00:26:59,660 --> 00:27:05,340 The engine sucks air in at the front with a fan, in this case the vac motor. 440 00:27:05,340 --> 00:27:09,060 This air is compressed, then mixed with fuel and lit. 441 00:27:09,060 --> 00:27:13,900 The burning gases blast out backwards and cause thrust. 442 00:27:13,900 --> 00:27:20,220 And for this project, vac parts alone aren't quite enough. 443 00:27:20,220 --> 00:27:26,500 While an engine carry limbers up, Tori's been shopping for jet engine parts in, of all places, 444 00:27:26,500 --> 00:27:27,900 the restaurant district. 445 00:27:27,900 --> 00:27:31,260 I found this, this could be, you know, this is going to be for the flame holder here. 446 00:27:31,260 --> 00:27:32,260 That is perfect. 447 00:27:32,260 --> 00:27:34,620 In the combustion area. 448 00:27:34,620 --> 00:27:39,580 I got this portable stove and what I'll do is I'll use the propane ring for the combustion 449 00:27:39,580 --> 00:27:40,580 area. 450 00:27:40,580 --> 00:27:41,580 There's also an electric igniter in here. 451 00:27:41,580 --> 00:27:42,580 Oh, perfect. 452 00:27:42,580 --> 00:27:44,260 I love this. 453 00:27:44,260 --> 00:27:48,900 This is exactly what they have at NASA. 454 00:27:48,900 --> 00:27:54,420 Of course NASA used theirs to build rockets, while Tori's got to build a jet engine. 455 00:27:54,420 --> 00:28:00,580 It's going to be one small step for him and probably an even smaller step for mankind. 456 00:28:00,580 --> 00:28:07,260 Oh, look what I found. 457 00:28:07,260 --> 00:28:08,660 This is my, this is my engine. 458 00:28:08,660 --> 00:28:10,340 This is my jet engine. 459 00:28:10,340 --> 00:28:12,340 The final ingredients ready. 460 00:28:12,340 --> 00:28:20,140 It's time to get this thing cooking. 461 00:28:20,140 --> 00:28:25,860 Flame catcher. 462 00:28:25,860 --> 00:28:30,100 The vacuum cleaner and household parts are clicking into place. 463 00:28:30,100 --> 00:28:32,820 That just leads the fuel injection system. 464 00:28:32,820 --> 00:28:35,020 That's a jet engine. 465 00:28:35,020 --> 00:28:40,180 Not really. 466 00:28:40,500 --> 00:28:44,940 Tori's worried that the vacuum fan will simply snuff out the flame. 467 00:28:44,940 --> 00:28:49,420 I'm going to hook up this motor, see how much wind gets blown through the tube and see if 468 00:28:49,420 --> 00:28:52,100 that's enough to blow it out. 469 00:28:52,100 --> 00:28:56,180 With the vacuum off and the gas running, let's light that fire. 470 00:28:56,180 --> 00:28:59,300 Mythbusters style. 471 00:28:59,300 --> 00:29:03,340 We have ignition. 472 00:29:03,340 --> 00:29:06,900 So on with the VAC. 473 00:29:06,900 --> 00:29:08,500 And it's out. 474 00:29:08,500 --> 00:29:10,380 Tori's fears are confirmed. 475 00:29:10,380 --> 00:29:13,020 The VAC blows out the flame. 476 00:29:13,020 --> 00:29:17,500 So that is not going to work. 477 00:29:17,500 --> 00:29:18,500 Plan B. 478 00:29:18,500 --> 00:29:19,660 Do you have a plan B? 479 00:29:19,660 --> 00:29:20,660 Absolutely not. 480 00:29:20,660 --> 00:29:22,380 Don't be modest. 481 00:29:22,380 --> 00:29:27,340 All good mythbusters have a plan B. 482 00:29:27,340 --> 00:29:31,180 And in this case, it's build your own propane stove. 483 00:29:31,180 --> 00:29:33,420 Build it bigger and better. 484 00:29:33,420 --> 00:29:34,420 Or at least try. 485 00:29:35,420 --> 00:29:39,180 I don't know, there's going to be a lot of engineers out there looking at me going, 486 00:29:39,180 --> 00:29:40,940 what the hell is he doing? 487 00:29:40,940 --> 00:29:51,020 And I'm asking myself that on a moment by moment basis, what the hell am I doing? 488 00:29:51,020 --> 00:29:52,940 Great balls of fire. 489 00:29:52,940 --> 00:30:03,340 Could this just be enough to turn a shop vac into a jet engine? 490 00:30:03,340 --> 00:30:05,580 In the myth can a singer break glass? 491 00:30:05,580 --> 00:30:11,060 The mythbusters are about to see if even their amateur voices can blast through speakers 492 00:30:11,060 --> 00:30:17,180 and smash crystal. 493 00:30:17,180 --> 00:30:21,260 Before they break out in song, first they need some training. 494 00:30:21,260 --> 00:30:24,940 I can't do all that, I'm smiling. 495 00:30:24,940 --> 00:30:28,980 And believe it or not, this is lesson number one. 496 00:30:28,980 --> 00:30:29,980 Lip bubbles. 497 00:30:29,980 --> 00:30:30,980 Just do that. 498 00:30:30,980 --> 00:30:31,980 Like that? 499 00:30:31,980 --> 00:30:32,980 Yes, several times. 500 00:30:32,980 --> 00:30:39,260 I don't know if I can do that all. 501 00:30:39,260 --> 00:30:43,060 You can't make lip bubbles with a stash? 502 00:30:43,060 --> 00:30:46,180 Fortunately for Jamie, there's another technique. 503 00:30:46,180 --> 00:30:52,220 Make a smiley face and you go. 504 00:30:52,220 --> 00:30:56,220 So it's like falsetto and you start real low and you get louder and louder on the same 505 00:30:56,220 --> 00:30:57,220 pitch. 506 00:30:57,220 --> 00:31:01,460 Real soft. 507 00:31:01,460 --> 00:31:02,460 Like a woman. 508 00:31:02,460 --> 00:31:07,100 You want to try a glass? 509 00:31:07,100 --> 00:31:08,100 I'm dying to try a glass. 510 00:31:08,100 --> 00:31:10,500 I want to see Jamie do it first. 511 00:31:10,500 --> 00:31:12,900 Everyone quiet for a second while I give Jamie the tone. 512 00:31:12,900 --> 00:31:14,900 This is Jamie Heineman. 513 00:31:14,900 --> 00:31:16,340 You know he has a perfect pitch. 514 00:31:16,340 --> 00:31:22,500 And he's going to need it to break this glass. 515 00:31:22,500 --> 00:31:30,500 I had a nightmare like this once. 516 00:31:30,500 --> 00:31:36,620 Well I'm moving the straw around pretty good. 517 00:31:36,620 --> 00:31:42,100 Sure enough the straw is dancing but no shards fly. 518 00:31:42,100 --> 00:31:44,140 Maybe the teacher's got some top tips. 519 00:31:44,140 --> 00:31:45,980 Jamie, what am I doing wrong? 520 00:31:45,980 --> 00:31:50,460 You've got to shave your mustache. 521 00:31:50,580 --> 00:31:53,740 When you see that straw shaking, stop it. 522 00:31:53,740 --> 00:31:56,860 It ain't like jumping from a seed to a sea sharp like normal people do. 523 00:31:56,860 --> 00:32:00,780 You've got to slide slowly up or slowly down. 524 00:32:00,780 --> 00:32:10,780 You're just a hear away from a guy. 525 00:32:10,780 --> 00:32:15,100 If at first you don't succeed, try try again. 526 00:32:15,100 --> 00:32:22,620 So please, not too many times. 527 00:32:22,620 --> 00:32:25,300 Releasing the awesome power of the Heineman. 528 00:32:25,300 --> 00:32:26,300 Well you try. 529 00:32:26,300 --> 00:32:27,300 Okay. 530 00:32:27,300 --> 00:32:31,260 It seems that Jamie's got the power but not the pitch. 531 00:32:31,260 --> 00:32:32,700 He's an octave too low. 532 00:32:32,700 --> 00:32:34,820 Will you go tap the glass for me? 533 00:32:34,820 --> 00:32:35,820 Okay. 534 00:32:35,820 --> 00:32:36,820 Maybe Adam will be on song. 535 00:32:36,820 --> 00:32:41,820 Will you tap the glass for me? 536 00:32:41,820 --> 00:32:52,220 Adam is also just too deep for this crystal. 537 00:32:52,220 --> 00:32:55,900 No I don't think I have the tone right. 538 00:32:55,900 --> 00:32:58,340 There you go. 539 00:32:58,340 --> 00:32:59,340 Alright. 540 00:32:59,340 --> 00:33:00,340 Push down with your stomach. 541 00:33:00,340 --> 00:33:01,340 Breathe in with your belly. 542 00:33:01,340 --> 00:33:08,620 Take the sphincter. 543 00:33:08,620 --> 00:33:10,340 It started to jump right there just now. 544 00:33:10,340 --> 00:33:11,340 Alright. 545 00:33:11,340 --> 00:33:12,340 There you go. 546 00:33:12,340 --> 00:33:13,340 I did it. 547 00:33:13,340 --> 00:33:14,340 Wow. 548 00:33:14,340 --> 00:33:15,340 There you go. 549 00:33:15,340 --> 00:33:16,340 That was great. 550 00:33:16,340 --> 00:33:17,340 I graduated. 551 00:33:17,340 --> 00:33:18,340 You're now a full vocalist. 552 00:33:18,340 --> 00:33:19,340 Oh that's incredible. 553 00:33:19,340 --> 00:33:34,540 Through amplification, Adam has proved that even an untrained voice can sing the correct 554 00:33:34,540 --> 00:33:38,220 tone to break glass. 555 00:33:38,220 --> 00:33:39,220 No more kids. 556 00:33:39,220 --> 00:33:43,420 No experiment is valid unless it's repeatable so I'm going to try this again. 557 00:33:43,420 --> 00:33:46,220 All in the name of science of course. 558 00:33:46,220 --> 00:34:00,900 I'm trying the master's techniques. 559 00:34:00,900 --> 00:34:01,900 Another success. 560 00:34:01,900 --> 00:34:18,100 Now to prepare for that global exclusive, unamplified glass breaking. 561 00:34:18,100 --> 00:34:24,740 The build team have rolled back to the stone age to see if a rolling stone gathers no moss. 562 00:34:24,740 --> 00:34:29,420 Their circular rig has been turning for four weeks to test this traditional proverb. 563 00:34:29,420 --> 00:34:31,820 But what does it actually mean? 564 00:34:31,820 --> 00:34:34,340 Let's check the word on the street. 565 00:34:34,340 --> 00:34:37,020 A rolling stone gathers no moss. 566 00:34:37,020 --> 00:34:43,340 I think that means that if you keep on going, you don't collect a lot of junk. 567 00:34:43,340 --> 00:34:44,340 I guess it would depend. 568 00:34:44,340 --> 00:34:47,380 It's kind of like a coffee table on wheels gathers no dust. 569 00:34:47,380 --> 00:34:51,940 As long as you keep moving around, you don't have to worry about getting tied down, committed, 570 00:34:51,940 --> 00:34:52,940 obligated. 571 00:34:52,940 --> 00:34:58,580 If you keep on the move, you don't get slimy and unattractive. 572 00:34:58,580 --> 00:35:02,940 If you're asking if I think that moss would grow on a stone that is continually moving, 573 00:35:02,940 --> 00:35:04,540 I don't think so. 574 00:35:04,540 --> 00:35:06,540 Don't think so, huh? 575 00:35:06,540 --> 00:35:09,700 Well after four weeks, let's check on the progress. 576 00:35:09,700 --> 00:35:12,900 It looks almost like in these little cracks. 577 00:35:12,900 --> 00:35:13,900 Could that be growing? 578 00:35:13,900 --> 00:35:14,900 You know what? 579 00:35:14,900 --> 00:35:17,180 It's somewhat stuck there. 580 00:35:17,180 --> 00:35:18,180 That could be growing. 581 00:35:18,180 --> 00:35:19,180 I don't know. 582 00:35:19,180 --> 00:35:20,180 I don't think so. 583 00:35:20,180 --> 00:35:21,660 Couldn't this be gathered moss? 584 00:35:21,660 --> 00:35:25,100 Well then that's where you have to ask the question, what is gathering? 585 00:35:25,100 --> 00:35:28,700 Does it mean does it just stick to it or does it actually grow on it? 586 00:35:28,700 --> 00:35:31,180 Tari philosophizing again. 587 00:35:31,180 --> 00:35:36,100 Up to now, the test has inferred that to gather moss means to grow it. 588 00:35:36,100 --> 00:35:39,700 But what if it means just to snag some? 589 00:35:39,700 --> 00:35:41,900 That needs a whole new test. 590 00:35:41,900 --> 00:35:46,980 Something like rolling a stone down a mossy hill. 591 00:35:46,980 --> 00:35:50,660 After we roll our stones down a little mossy patch, we've got a little magnifying glass 592 00:35:50,660 --> 00:35:54,300 and we're going to search the rocks to see if we can find any little traces of moss left 593 00:35:54,300 --> 00:35:59,860 in our stone because the tiniest little trace will prove or disprove this proverb. 594 00:35:59,860 --> 00:36:08,100 That's the plan, to make a mountain out of a moss hill. 595 00:36:08,100 --> 00:36:09,940 Nice fall in there. 596 00:36:09,940 --> 00:36:14,820 Kari's rolling down both the smooth rocks and the ones she's roughing up to see if 597 00:36:14,820 --> 00:36:18,660 any will collect some moss on their short mossy migration. 598 00:36:18,660 --> 00:36:22,420 Think we can get better. 599 00:36:22,420 --> 00:36:23,420 And the results? 600 00:36:24,220 --> 00:36:26,420 There's definitely some moss on this one. 601 00:36:26,420 --> 00:36:29,300 It ain't much, but it's definitely moss. 602 00:36:29,300 --> 00:36:32,420 I have a feeling that if this rock stayed stationary and didn't roll again, that the 603 00:36:32,420 --> 00:36:35,820 moss could probably grow because it grows so wild out here. 604 00:36:35,820 --> 00:36:39,420 To gather or to grow, that is the question. 605 00:36:39,420 --> 00:36:46,900 Tumble a rock over moss and it sure picks some up, but will a rolling rock grow moss? 606 00:36:46,900 --> 00:36:51,500 Back to the workshop, where not everything is rolling smoothly. 607 00:36:52,500 --> 00:36:55,700 Well, we've been rolling our stones for six weeks now. 608 00:36:55,700 --> 00:36:56,700 What do we got? 609 00:36:56,700 --> 00:36:59,700 Well, remember when you said it was going to be a simple experiment? 610 00:36:59,700 --> 00:37:01,700 Yes, I do. 611 00:37:01,700 --> 00:37:03,700 Surprisingly enough, we messed it up. 612 00:37:03,700 --> 00:37:04,700 What'd you do? 613 00:37:04,700 --> 00:37:10,020 Well, supposedly the moss expert seems to think that we didn't chop the moss up fine 614 00:37:10,020 --> 00:37:11,020 enough. 615 00:37:11,020 --> 00:37:13,380 The stationary rocks are control nothing. 616 00:37:13,380 --> 00:37:15,580 We have not grown any moss whatsoever. 617 00:37:15,580 --> 00:37:19,980 But we do have a rock that already had moss growing on it, and that moss is growing great. 618 00:37:19,980 --> 00:37:23,020 So at least we've proven that we have a moss-friendly environment. 619 00:37:23,020 --> 00:37:26,460 I thought this was going to be an easy, simple experiment. 620 00:37:26,460 --> 00:37:27,460 And you screwed it up. 621 00:37:27,460 --> 00:37:31,540 Well, let's go out and get some fresh moss and chop it up properly this time. 622 00:37:31,540 --> 00:37:32,540 Let's get this going. 623 00:37:32,540 --> 00:37:36,860 I don't want to lose any more sleep over this, so do it right. 624 00:37:36,860 --> 00:37:40,860 Six weeks wasted by poor moss mangling. 625 00:37:40,860 --> 00:37:44,020 This time the fresh moss is minced in a blender. 626 00:37:44,020 --> 00:37:48,860 Much better than Tori's hammer drill. 627 00:37:48,860 --> 00:37:53,500 This moss milkshake is much more like a smoothie. 628 00:37:53,500 --> 00:38:01,340 The batter is painted on the rolling rocks, the control rocks, and on the lanes. 629 00:38:01,340 --> 00:38:06,300 Everything's back on track, and the stones start their pilgrimage once again. 630 00:38:06,300 --> 00:38:13,140 Now, we sit and wait for a long, long, long time. 631 00:38:13,140 --> 00:38:17,700 In fact, the Mythbusters wait for over six months. 632 00:38:18,020 --> 00:38:21,980 The rolling rig spins right through the spring. 633 00:38:21,980 --> 00:38:26,660 It's still wheeling during the height of summer, and as the nights lengthen and the autumn 634 00:38:26,660 --> 00:38:32,220 chill returns, the stones are still rolling along. 635 00:38:32,220 --> 00:38:37,660 It's the longest experiment in Mythbusters history. 636 00:38:37,660 --> 00:38:43,220 We've been working on this story for a little over six months, and we've finally, possibly, 637 00:38:43,260 --> 00:38:49,660 I think we have some tiny little results that can answer the question, will a rolling stone gather moss? 638 00:38:49,660 --> 00:38:55,660 Okay, guys, well, you broke this down into two separate stories, and the first one is, 639 00:38:55,660 --> 00:38:59,420 will a rolling stone actually gather or collect moss? 640 00:38:59,420 --> 00:39:02,220 You guys went out to a hill and rolled a rock down the hill. 641 00:39:02,220 --> 00:39:03,220 What are the results? 642 00:39:03,220 --> 00:39:06,380 Well, actually, the rolling stone did gather moss. 643 00:39:06,380 --> 00:39:11,380 The second part that these guys tested was, will it actually grow moss? 644 00:39:11,380 --> 00:39:16,900 Will a rolling stone that has gathered some moss actually allow the moss to grow? 645 00:39:16,900 --> 00:39:22,780 Time to unload both barrels and collect some results, starting with the rocks that didn't 646 00:39:22,780 --> 00:39:23,940 move an inch. 647 00:39:23,940 --> 00:39:27,220 Oh, that's actually growing pretty well. 648 00:39:27,220 --> 00:39:28,220 Wow. 649 00:39:28,220 --> 00:39:29,220 Yeah. 650 00:39:29,220 --> 00:39:32,300 All the stationary rocks grow moss. 651 00:39:32,300 --> 00:39:37,340 So the rig was at least a moss-friendly barrel, but of course the Myth is about the rolling 652 00:39:37,340 --> 00:39:38,340 stones. 653 00:39:38,340 --> 00:39:41,060 Very gentle. 654 00:39:41,060 --> 00:39:44,940 This one's been rolling for six months, over a hundred miles. 655 00:39:44,940 --> 00:39:48,660 It's a long hill. 656 00:39:48,660 --> 00:39:50,660 Do you see any moss? 657 00:39:50,660 --> 00:39:53,340 Moss is so far from the ground. 658 00:39:53,340 --> 00:39:55,940 I don't see any. 659 00:39:55,940 --> 00:40:02,420 And it's the same for all three rolling rocks, not a trace of moss. 660 00:40:02,420 --> 00:40:04,540 So, you guys, what do we tell the viewers? 661 00:40:04,540 --> 00:40:08,420 I mean, is this proverb something that we can still use in the modern world? 662 00:40:08,420 --> 00:40:13,380 For me, there's no question about it, that the spirit of this myth is involving growing 663 00:40:13,380 --> 00:40:14,380 of moss. 664 00:40:14,380 --> 00:40:18,380 It's not like, yeah, okay, so you can roll a stone down a hill and there can be little 665 00:40:18,380 --> 00:40:22,620 bits of moss that get stuck to it for an instant until they fall off. 666 00:40:22,620 --> 00:40:23,900 That's not what the myth is about. 667 00:40:23,900 --> 00:40:24,900 I totally agree. 668 00:40:24,900 --> 00:40:28,420 And so I would say this proverb gets the Mythbuster seal of approval. 669 00:40:28,420 --> 00:40:31,300 A rolling stone does not gather any moss. 670 00:40:31,300 --> 00:40:32,300 That's the spirit. 671 00:40:32,300 --> 00:40:33,300 Yes. 672 00:40:33,300 --> 00:40:34,300 So it's... 673 00:40:34,300 --> 00:40:35,300 Current. 674 00:40:35,300 --> 00:40:36,300 Okay. 675 00:40:36,300 --> 00:40:44,820 The cherished vacuum cleaner. 676 00:40:44,820 --> 00:40:50,540 Loved and loathed by housewives and husbands for almost a hundred years. 677 00:40:50,540 --> 00:41:01,940 But can this household chore turn into something altogether more explosive? 678 00:41:01,940 --> 00:41:08,740 Can a vacuum cleaner be turned into a jet engine? 679 00:41:08,740 --> 00:41:11,460 You know, like all great myths, this one has an element of truth. 680 00:41:11,460 --> 00:41:14,940 Well, our research has actually turned up at least three cases that might have been 681 00:41:14,940 --> 00:41:15,940 its inspiration. 682 00:41:15,940 --> 00:41:21,380 I've got one from 1992, a guy trying to clean up a swimming pool water acetone mixed with 683 00:41:21,380 --> 00:41:25,420 a shop vac, got an explosion and he suffered burns on 70% of his body. 684 00:41:25,420 --> 00:41:30,060 And then in 93, there was a guy cleaning a propane tank on a train and he said it off, 685 00:41:30,060 --> 00:41:31,060 he died. 686 00:41:31,060 --> 00:41:32,060 What do you think? 687 00:41:32,060 --> 00:41:36,220 The myth that big bad things are going to happen if you use shop vac around explosive 688 00:41:36,220 --> 00:41:37,220 fuels? 689 00:41:37,220 --> 00:41:39,980 It will file it under operator error. 690 00:41:39,980 --> 00:41:43,780 Let's hope that they've told this to our resident pyromaniac. 691 00:41:43,780 --> 00:41:49,780 Tari's been on a mission to build a jet engine out of vac parts and household items. 692 00:41:49,780 --> 00:41:55,100 With the fuel injection sorted and a cone in place to accelerate the burning gases, it's 693 00:41:55,100 --> 00:41:57,900 almost time for a lift off. 694 00:41:57,900 --> 00:42:00,300 Okay, it's ready to go. 695 00:42:00,300 --> 00:42:01,300 I have it all sealed up. 696 00:42:01,300 --> 00:42:02,300 A little nervous. 697 00:42:02,300 --> 00:42:07,300 I think it might explode, but that's kind of cool too, right? 698 00:42:07,300 --> 00:42:13,340 All right, all I have to do next is hang it and we'll fill it with gas and then ignite 699 00:42:13,340 --> 00:42:16,340 it. 700 00:42:16,340 --> 00:42:21,820 Look at that. 701 00:42:21,820 --> 00:42:27,620 Okay, this is good. 702 00:42:27,620 --> 00:42:33,260 For once, the term not exactly rocket science couldn't be more wrong. 703 00:42:33,260 --> 00:42:42,140 I'm going to go fill the engine with gas and then let's light this puppy. 704 00:42:42,140 --> 00:42:46,140 T minus 10 seconds. 705 00:42:46,140 --> 00:42:47,140 Which one's the igniter? 706 00:42:47,140 --> 00:42:48,140 This one. 707 00:42:48,140 --> 00:42:49,140 Okay. 708 00:42:49,140 --> 00:42:54,820 Houston, we have a problem. 709 00:42:54,820 --> 00:42:56,980 No, see it's not lighting. 710 00:42:57,100 --> 00:43:03,180 I'm going to pull the igniter out of the center and just stick it at the back exhaust so it'll 711 00:43:03,180 --> 00:43:05,260 just ignite from there. 712 00:43:05,260 --> 00:43:10,340 With the igniter directly in the gas stream, it's back to mission control. 713 00:43:10,340 --> 00:43:14,540 Here we go. 714 00:43:14,540 --> 00:43:16,540 And ignition. 715 00:43:16,540 --> 00:43:21,020 Uh-oh. 716 00:43:21,020 --> 00:43:25,020 Why is it we always have this problem? 717 00:43:25,060 --> 00:43:28,020 It's sparking, but not igniting the gas. 718 00:43:28,020 --> 00:43:29,980 I'm going to light it. 719 00:43:29,980 --> 00:43:31,820 We'll stick it on the C-stand. 720 00:43:31,820 --> 00:43:35,540 I'll ignite it and just we'll have an open flame at the end of the exhaust because I 721 00:43:35,540 --> 00:43:37,900 don't know why it's not working now. 722 00:43:37,900 --> 00:43:39,900 Okay. 723 00:43:39,900 --> 00:43:41,900 Now that's got to work. 724 00:43:41,900 --> 00:43:43,900 Here we go. 725 00:43:43,900 --> 00:43:45,900 Gas on. 726 00:43:45,900 --> 00:43:52,900 All right, here we go. 727 00:43:52,900 --> 00:43:59,900 It's moving and it's on fire. 728 00:43:59,900 --> 00:44:05,900 Well, it didn't really jet across the room. 729 00:44:05,900 --> 00:44:08,780 Well, it was chained to the ceiling. 730 00:44:08,780 --> 00:44:12,380 The high speed shows that the flame igniter did the trick. 731 00:44:12,380 --> 00:44:14,900 Finally, the gas is lit. 732 00:44:14,900 --> 00:44:17,900 But this isn't just a burning fireball. 733 00:44:17,900 --> 00:44:21,900 Watch what happens when Tauri's going to be on fire. 734 00:44:21,900 --> 00:44:25,900 What happens when Tauri switches on the vacuum? 735 00:44:25,900 --> 00:44:31,900 Now, just for a second, there's a hint of thrust. 736 00:44:31,900 --> 00:44:35,900 No mission to Mars, but not bad for this rocket intern. 737 00:44:35,900 --> 00:44:39,900 Well, that was a cool flamethrower, not much of a jet engine. 738 00:44:39,900 --> 00:44:44,900 Yeah, and the whole concept of a vacuum cleaner being a jet engine is all wrong. 739 00:44:44,900 --> 00:44:47,900 It goes against the principles that make jet engines. 740 00:44:47,900 --> 00:44:49,900 Vacuum cleaners create vacuums. 741 00:44:49,900 --> 00:44:50,900 That's low pressure. 742 00:44:50,900 --> 00:44:54,900 A jet engine works by creating more pressure, which completes the combustion. 743 00:44:54,900 --> 00:44:56,900 So it's just not practical. 744 00:44:56,900 --> 00:44:58,900 So, shot back jet engine, totally busted? 745 00:44:58,900 --> 00:44:59,900 Totally. 746 00:44:59,900 --> 00:45:00,900 Good. 747 00:45:00,900 --> 00:45:01,900 Well, I feel better now. 748 00:45:01,900 --> 00:45:02,900 Nice try, though. 749 00:45:02,900 --> 00:45:03,900 Thanks. 750 00:45:08,900 --> 00:45:11,900 Breaking a glass through amplification is simple. 751 00:45:11,900 --> 00:45:16,900 Now for the real test, as voice coach Vendera prepares to rock on. 752 00:45:16,900 --> 00:45:24,900 For a world first, could he become the first person in history to break a glass using his voice alone? 753 00:45:24,900 --> 00:45:25,900 110%. 754 00:45:25,900 --> 00:45:27,900 I know I can do it. 755 00:45:27,900 --> 00:45:29,900 I don't have any doubt. 756 00:45:29,900 --> 00:45:32,900 I mean, if we get this, this is like, that's huge. 757 00:45:32,900 --> 00:45:34,900 No one's ever caught this sort of thing on videotape before. 758 00:45:34,900 --> 00:45:39,900 No one has a confirmed report, and if our researchers can't find it, I mean, nobody can. 759 00:45:39,900 --> 00:45:42,900 Oh, I'm so psyched about this, I can't even tell you. 760 00:45:43,900 --> 00:45:48,900 Time to go myth-busting and maybe make some history. 761 00:45:48,900 --> 00:45:52,900 Good job, they stocked up on crystal. 762 00:46:10,900 --> 00:46:14,900 Good job, they stocked up on crystal. 763 00:46:19,900 --> 00:46:24,900 12 glasses later, still no joy. 764 00:46:27,900 --> 00:46:33,900 Despite Jamie's confidence, it's beginning to look like this myth may just be busted. 765 00:46:33,900 --> 00:46:44,900 Vendera's got the tone, but not the power. 766 00:46:44,900 --> 00:46:48,900 The straw's jumping, but the glass is rock-solid. 767 00:46:54,900 --> 00:47:02,900 Well, Jamie Vendera's going to take a little break, so I'm going to continue the ongoing prices of making a fool out of myself and try it myself. 768 00:47:02,900 --> 00:47:07,900 Let's not forget that Adam did break two with the amplifier. 769 00:47:12,900 --> 00:47:16,900 But this is a much tougher task. 770 00:47:23,900 --> 00:47:29,900 Like, the best-case scenario is the glass shatters in my face. How do you think that makes me feel? 771 00:47:30,900 --> 00:47:34,900 Not sure he's got too much to worry about there. 772 00:47:38,900 --> 00:47:44,900 I don't know if I can do it. Not surprisingly, I don't think I can do it. 773 00:47:44,900 --> 00:47:49,900 Show's over for Adam, but Jamie Vendera's back for his encore. 774 00:48:00,900 --> 00:48:03,900 Woo! 775 00:48:05,900 --> 00:48:07,900 Jamie Vendera, dude! 776 00:48:07,900 --> 00:48:10,900 That is a first on television. 777 00:48:10,900 --> 00:48:13,900 A myth busters exclusive. 778 00:48:13,900 --> 00:48:20,900 556 Hertz, 105 decibels, and 20 attempts makes for a world first. 779 00:48:20,900 --> 00:48:28,900 History's been made, and it's been captured on high speed, so there's really no need to try this one at home. 780 00:48:29,900 --> 00:48:36,900 Well, that's it. We proved that there is a tone that you can use to match the resonant frequency of glass in order to shatter it. 781 00:48:36,900 --> 00:48:45,900 And most importantly of all, we proved for the first time that an unassisted human voice can actually generate that tone and shatter a glass. 782 00:48:45,900 --> 00:48:46,900 I'm amazed by that. 783 00:48:46,900 --> 00:48:47,900 You ready? 784 00:48:47,900 --> 00:48:48,900 That's another one busted, right? 785 00:48:48,900 --> 00:48:51,900 No, it's not busted. It's confirmed, but we can still smash these. 786 00:48:51,900 --> 00:48:52,900 Okay. 787 00:48:54,900 --> 00:48:56,900 I win. 788 00:49:29,900 --> 00:49:30,900 Thank you.