1 00:00:01,120 --> 00:00:04,320 Speaker 1: Welcome to you Stuff you should Know from house Stuff 2 00:00:04,320 --> 00:00:12,880 Speaker 1: Works dot com. Hey, and welcome to the podcast. I'm 3 00:00:12,960 --> 00:00:16,119 Speaker 1: Josh Clark. There's Charles W Chuck Bryant, and Noel Is 4 00:00:16,160 --> 00:00:18,919 Speaker 1: with us today. Yes, producing, Yeah, which makes it a 5 00:00:19,000 --> 00:00:22,120 Speaker 1: super special stuff you should know, a more here stute 6 00:00:22,200 --> 00:00:25,319 Speaker 1: stuff you should know. Yeah, that's right. Although old to 7 00:00:25,320 --> 00:00:28,480 Speaker 1: get a haircut, I know. He looks like a buddy 8 00:00:28,480 --> 00:00:31,120 Speaker 1: of mine from elementary school. Your elementary school for a 9 00:00:31,160 --> 00:00:34,479 Speaker 1: net a full beard. No, without he took away the 10 00:00:34,479 --> 00:00:37,360 Speaker 1: beard would be like any number of my friends from 11 00:00:37,360 --> 00:00:39,840 Speaker 1: elementary school. Yeah. There was always that one guy though 12 00:00:39,880 --> 00:00:42,839 Speaker 1: that had the early early facial hair. My you know, 13 00:00:42,920 --> 00:00:47,919 Speaker 1: jimsa Middle Eastern. He sort of had a little mustache 14 00:00:48,000 --> 00:00:50,959 Speaker 1: in like the seventh grade. I had a friend named 15 00:00:51,080 --> 00:00:53,680 Speaker 1: ron in Uh in elementary school. Man. He had like 16 00:00:53,720 --> 00:00:57,280 Speaker 1: a deep voice and like the mustache and everything. It 17 00:00:57,360 --> 00:00:59,720 Speaker 1: may have been fourth or fifth grade. Now he sells 18 00:00:59,720 --> 00:01:06,560 Speaker 1: steer is. Yeah, so obviously we're talking boomerangs, Chuck, that's right, 19 00:01:06,840 --> 00:01:10,680 Speaker 1: And um, if you associate boomerangs with Australia, there's actually 20 00:01:10,680 --> 00:01:14,440 Speaker 1: a pretty good reason for that. It turns out the boomerangs, 21 00:01:14,440 --> 00:01:15,880 Speaker 1: what do you think of a boomerang, which is kind 22 00:01:15,880 --> 00:01:19,920 Speaker 1: of like a crescent shaped stick that you throw and 23 00:01:19,959 --> 00:01:22,600 Speaker 1: it just comes back to you eventually and you catch 24 00:01:22,640 --> 00:01:25,399 Speaker 1: it and look at your friends and say pretty cool. 25 00:01:25,520 --> 00:01:27,640 Speaker 1: Huh yeah there, Like how do you do that? That 26 00:01:28,000 --> 00:01:33,759 Speaker 1: was most people think perfected in um by aborigines in Australia. 27 00:01:34,319 --> 00:01:38,000 Speaker 1: That's right. If you want to go back even further, UM, well, 28 00:01:38,040 --> 00:01:40,520 Speaker 1: there's a couple of types of boomerangs. Well, there's many 29 00:01:40,560 --> 00:01:43,880 Speaker 1: types of boomerangs, but two main categories is one that 30 00:01:43,920 --> 00:01:46,600 Speaker 1: returns to you that you play with, and the one 31 00:01:46,640 --> 00:01:48,200 Speaker 1: that you go out and try and kill animals with 32 00:01:48,520 --> 00:01:51,440 Speaker 1: that does not return to you. UM. I call those 33 00:01:51,560 --> 00:01:55,280 Speaker 1: the sad boomerangs. Some people call him rabbit sticks rabbit 34 00:01:55,360 --> 00:01:58,000 Speaker 1: Oh no, I know, isn't that mean? But if you 35 00:01:58,040 --> 00:01:59,840 Speaker 1: want to learn how to make one yourself, go to 36 00:02:00,280 --> 00:02:04,960 Speaker 1: um Survival Skills, the website the Hunting Boomerang. It's actually 37 00:02:05,000 --> 00:02:07,800 Speaker 1: it's pretty cool. This guy does. He makes he's he 38 00:02:08,040 --> 00:02:11,680 Speaker 1: shows you step by step how to make a boomerang 39 00:02:12,080 --> 00:02:15,240 Speaker 1: natural skills, I'm sorry skill. He just goes out in 40 00:02:15,280 --> 00:02:18,560 Speaker 1: the woods and finds like a kind of roughly boomerang 41 00:02:18,680 --> 00:02:23,760 Speaker 1: shape stick and then use it into like a functioning, 42 00:02:24,720 --> 00:02:27,919 Speaker 1: non returning boomerang is pretty awesome. Well, and that's what 43 00:02:28,000 --> 00:02:31,520 Speaker 1: people theorize is how the boomerang came about. Um Back 44 00:02:31,520 --> 00:02:34,639 Speaker 1: in Took Took's day, they would eventually learn to take 45 00:02:34,680 --> 00:02:37,200 Speaker 1: a club and beat an animal on the head. And 46 00:02:37,240 --> 00:02:39,920 Speaker 1: then maybe one of Took Took's rand was smart enough 47 00:02:39,960 --> 00:02:42,120 Speaker 1: to say, Hey, maybe if I throw this at the 48 00:02:42,160 --> 00:02:45,480 Speaker 1: animal from a distance, I won't scare them away, or 49 00:02:45,560 --> 00:02:48,359 Speaker 1: that animals faster than I can run, But I can 50 00:02:48,360 --> 00:02:51,560 Speaker 1: throw a stick faster than the animal can run. Let 51 00:02:51,560 --> 00:02:53,520 Speaker 1: me hit it in the head with the stick. That's right. 52 00:02:53,639 --> 00:02:56,880 Speaker 1: And so over time, just like with any early tool 53 00:02:57,160 --> 00:03:01,359 Speaker 1: um evolution, I guess you would uh find sticks that 54 00:03:01,400 --> 00:03:05,160 Speaker 1: flew better and further and further, and eventually they sort 55 00:03:05,160 --> 00:03:07,240 Speaker 1: of took the shape of a boomerang because of its 56 00:03:07,320 --> 00:03:10,400 Speaker 1: unique flying properties. Yeah, they figured out that like a 57 00:03:10,520 --> 00:03:14,920 Speaker 1: curved stick, well, you can aim it more easily and 58 00:03:15,000 --> 00:03:18,320 Speaker 1: it'll fly longer. So they started selecting for those kind 59 00:03:18,320 --> 00:03:21,360 Speaker 1: of sticks, and then they started making those sticks themselves, 60 00:03:21,400 --> 00:03:24,280 Speaker 1: like somebody from the Natural Skills website would. Yeah, the 61 00:03:24,320 --> 00:03:28,560 Speaker 1: two the the design of the two different branches made 62 00:03:28,560 --> 00:03:31,280 Speaker 1: it more stable. Yeah, and we'll get into the mind 63 00:03:31,520 --> 00:03:36,800 Speaker 1: bending physics behind a boomerang. Boomerangs, frankly, are magic sticks 64 00:03:36,800 --> 00:03:43,000 Speaker 1: of physics. They're almost they're almost it's almost impossible to 65 00:03:43,080 --> 00:03:46,240 Speaker 1: understand them, like what's going on? But we're gonna do 66 00:03:46,280 --> 00:03:49,320 Speaker 1: our best to explain it. And it's with a non 67 00:03:49,400 --> 00:03:54,120 Speaker 1: returning boomerang. It's kind of straightforward. It's the returning boomerang 68 00:03:54,560 --> 00:03:57,640 Speaker 1: that they say the Aboriginal Australians were the first to invent. 69 00:03:58,040 --> 00:04:01,800 Speaker 1: That is really difficult to grasp the physics behind. Yeah, 70 00:04:01,880 --> 00:04:05,400 Speaker 1: and the oldest non returning boomerang they found in Poland 71 00:04:05,400 --> 00:04:08,200 Speaker 1: from about twenty years ago. Yeah, that's surprising to me. 72 00:04:08,400 --> 00:04:10,760 Speaker 1: And what that was that far ago? Know that it 73 00:04:10,840 --> 00:04:14,320 Speaker 1: was in Poland? Oh, because I think of the boomerangs 74 00:04:14,360 --> 00:04:19,680 Speaker 1: exclusively associated with Oceania. Yeah not, Yeah, they were. They 75 00:04:19,680 --> 00:04:22,080 Speaker 1: were found in Native American tribes too, and stuff kind 76 00:04:22,080 --> 00:04:25,800 Speaker 1: of all over the world. So Australian Aborigines use something 77 00:04:25,839 --> 00:04:30,800 Speaker 1: called a kylie um exclusively for hunting at first, and 78 00:04:31,320 --> 00:04:33,640 Speaker 1: they think, and this is I think the netst thing, 79 00:04:33,960 --> 00:04:36,960 Speaker 1: because you certainly can't, you know, like find this out factually, 80 00:04:36,960 --> 00:04:40,800 Speaker 1: but they think that eventually they stumbled upon one that 81 00:04:40,920 --> 00:04:43,279 Speaker 1: kind of came back and they thought it was fun, 82 00:04:44,000 --> 00:04:47,320 Speaker 1: so they started throwing returning boomerangs. Yeah, because it's like 83 00:04:47,400 --> 00:04:50,640 Speaker 1: just to get their kicks, just for kicks. Because returning 84 00:04:50,640 --> 00:04:53,480 Speaker 1: boomerang you can't use for hunting well now, because if 85 00:04:53,520 --> 00:04:55,960 Speaker 1: you if you throw returning boomerang, can hit an animal. 86 00:04:56,560 --> 00:04:58,680 Speaker 1: If you hit the animal, it's not going to return 87 00:04:58,720 --> 00:05:01,000 Speaker 1: back to you. That's that, it's not real. That same 88 00:05:01,160 --> 00:05:04,600 Speaker 1: just cartoons everybody. So that's why there's two types. There's 89 00:05:04,640 --> 00:05:07,680 Speaker 1: ones that you brain an animal with and there's another 90 00:05:07,760 --> 00:05:10,400 Speaker 1: that you just throw around to impress your friends. That's right. 91 00:05:10,520 --> 00:05:14,159 Speaker 1: And apparently though the Aboriginal Australians figured out how to 92 00:05:14,240 --> 00:05:19,200 Speaker 1: use returning boomerangs to hunt. They would put some nets 93 00:05:19,279 --> 00:05:23,600 Speaker 1: up in trees. They would throw the boomerang, the returning boomerang, 94 00:05:23,760 --> 00:05:26,719 Speaker 1: and then whoever was best at making like an eagle 95 00:05:26,839 --> 00:05:30,240 Speaker 1: or hawks call would make that call and it'd scare 96 00:05:30,240 --> 00:05:32,360 Speaker 1: all the birds because they'd see this thing flying here 97 00:05:32,360 --> 00:05:34,760 Speaker 1: a hawks call, and they fly into the nets and 98 00:05:34,760 --> 00:05:38,320 Speaker 1: the Aborigines would eat them. Not a bad idea. So 99 00:05:38,320 --> 00:05:41,400 Speaker 1: that's pretty much the history of boomerangs. Yeah, and they 100 00:05:41,720 --> 00:05:43,920 Speaker 1: you know, no one owns a patent on the boomerang. 101 00:05:44,000 --> 00:05:46,640 Speaker 1: There are many kinds of boomerangs that people have patented, 102 00:05:46,680 --> 00:05:50,080 Speaker 1: of course, but the original boomerang was just hey, this 103 00:05:50,160 --> 00:05:52,760 Speaker 1: was something we figured out on our own. It's like DNA, 104 00:05:54,279 --> 00:05:57,480 Speaker 1: it belongs to the ages, it belongs to the universe. 105 00:05:57,800 --> 00:05:59,640 Speaker 1: So you're returning boomerang is going to be a little 106 00:05:59,720 --> 00:06:02,480 Speaker 1: lighter obviously, because you're not trying to kill a rabbit. 107 00:06:02,680 --> 00:06:05,000 Speaker 1: It's just for showing off. Yeah, and I've even you know, 108 00:06:05,040 --> 00:06:09,680 Speaker 1: they have the little uh um nerf versions for kids. 109 00:06:10,200 --> 00:06:11,320 Speaker 1: I had one of those when I was a kid, 110 00:06:11,360 --> 00:06:15,120 Speaker 1: the little uh three pronged boomerang, and those are kind 111 00:06:15,120 --> 00:06:17,279 Speaker 1: of fun. But if you look at videos of the 112 00:06:17,320 --> 00:06:22,040 Speaker 1: real deal, like large three foot wooden boomerangs, it's pretty 113 00:06:22,040 --> 00:06:24,680 Speaker 1: impressive to see. Like, you know, it's it's a tough 114 00:06:24,720 --> 00:06:26,120 Speaker 1: thing to do. You're not just going out there in 115 00:06:26,160 --> 00:06:28,479 Speaker 1: your first try and have to fly back to you. 116 00:06:28,720 --> 00:06:31,840 Speaker 1: There's actually like boomerang teams around the world. Yeah, us 117 00:06:31,880 --> 00:06:35,000 Speaker 1: boomerang team. Unless you're a wonder kin of course or natural, 118 00:06:35,040 --> 00:06:36,760 Speaker 1: I'm sure to do it you on your first time. 119 00:06:37,160 --> 00:06:39,640 Speaker 1: I'm sure it's happened before. Maybe this maybe want to 120 00:06:39,640 --> 00:06:42,359 Speaker 1: get a boomerang, By the way, did are you going to? 121 00:06:42,640 --> 00:06:46,599 Speaker 1: I don't know, maybe the boomerang team. What I'm hoping 122 00:06:46,680 --> 00:06:49,240 Speaker 1: is a fan makes handcrafted boomerangs and since oh yeah, 123 00:06:49,320 --> 00:06:51,080 Speaker 1: I hadn't thought about that, I'll bet we have at 124 00:06:51,160 --> 00:06:56,360 Speaker 1: least one boomerang maker listener, So send us to Yeah nice, 125 00:06:56,520 --> 00:06:59,359 Speaker 1: thanks Chuck. That way we can go out and perform 126 00:06:59,400 --> 00:07:02,640 Speaker 1: a little two man boomerang. Maybe we can cross them 127 00:07:02,680 --> 00:07:08,320 Speaker 1: and everything. So um the Again, the non returning boomerangs 128 00:07:08,320 --> 00:07:11,280 Speaker 1: are pretty straightforward. It's the returning boomerangs that are lighter, 129 00:07:11,320 --> 00:07:15,480 Speaker 1: and they're they're made to be more aerodynamic. And the 130 00:07:15,640 --> 00:07:20,640 Speaker 1: proper way to throw a returning boomerang is um to 131 00:07:20,760 --> 00:07:23,920 Speaker 1: hold it at a vertical angle, to hold it up 132 00:07:23,920 --> 00:07:26,760 Speaker 1: and down right, which is weird because if you ever 133 00:07:26,800 --> 00:07:30,480 Speaker 1: see somebody throw a boomerang, when it comes back, it's horizontal. 134 00:07:31,240 --> 00:07:34,000 Speaker 1: It's horizontally oriented. Yeah, it kind of just lands very 135 00:07:34,040 --> 00:07:37,840 Speaker 1: softly like a helicopter. Right. The thing is is, it 136 00:07:37,880 --> 00:07:41,800 Speaker 1: goes from upright to horizontal in the midst of this 137 00:07:41,920 --> 00:07:46,200 Speaker 1: path and it comes back to you. And if you 138 00:07:46,200 --> 00:07:49,280 Speaker 1: stop and think about it like that makes zero sense whatsoever. 139 00:07:51,080 --> 00:07:54,960 Speaker 1: A non returning boomerang certainly doesn't do either. Of those things. 140 00:07:55,000 --> 00:07:58,280 Speaker 1: It's just the returning boomerang. And the whole reason behind 141 00:07:58,360 --> 00:08:02,160 Speaker 1: this is because of the design of the returning boomerang. 142 00:08:02,480 --> 00:08:07,560 Speaker 1: It's basically a two pronged propeller that's not attached to 143 00:08:07,560 --> 00:08:12,040 Speaker 1: anything that thanks to the force you give it and 144 00:08:12,160 --> 00:08:15,080 Speaker 1: it's rotation and a whole other bunch of stuff that 145 00:08:15,080 --> 00:08:20,320 Speaker 1: will get into it leans to the it falls to 146 00:08:20,360 --> 00:08:23,200 Speaker 1: the left, turns clockwise, and comes back to you. That's 147 00:08:23,240 --> 00:08:25,960 Speaker 1: if you're a right handed thrower with the right handed boomerang. 148 00:08:26,040 --> 00:08:28,000 Speaker 1: If you're a left handed person, you have to have 149 00:08:28,040 --> 00:08:30,880 Speaker 1: a left handed boomerang. It's a mirror image of the 150 00:08:30,960 --> 00:08:34,160 Speaker 1: right handed boomerang. If you try to throw a right 151 00:08:34,160 --> 00:08:36,440 Speaker 1: handed boomerang with your left hand, it's not gonna work out. 152 00:08:36,440 --> 00:08:40,320 Speaker 1: So well, I bet there's one person out there it's like, oh, 153 00:08:40,920 --> 00:08:44,120 Speaker 1: I had no idea. So we're gonna muster up our 154 00:08:44,160 --> 00:08:47,360 Speaker 1: courage and and get into the physics of the boomerang 155 00:08:47,679 --> 00:08:55,920 Speaker 1: right after this. Alright, chuck, here we go. All right, So, 156 00:08:55,960 --> 00:08:57,680 Speaker 1: I guess the first thing we should talk about is 157 00:08:57,679 --> 00:09:00,080 Speaker 1: a little bit about just the physical design of the 158 00:09:00,080 --> 00:09:05,200 Speaker 1: boomerang itself. The wings are slightly tilted, so it creates 159 00:09:05,200 --> 00:09:08,080 Speaker 1: what's called an airfoil, just like an airplane wing. Look 160 00:09:08,080 --> 00:09:11,160 Speaker 1: out your plane window there and you're sitting on the wing. 161 00:09:11,600 --> 00:09:13,959 Speaker 1: You're going to notice that the top of it is 162 00:09:14,080 --> 00:09:17,080 Speaker 1: rounded and the bottom of it is flat, and that 163 00:09:17,240 --> 00:09:20,920 Speaker 1: is going to give a plane lift and a boomerang lift. Right. 164 00:09:21,160 --> 00:09:24,120 Speaker 1: The the air going over the top of the wing, 165 00:09:24,280 --> 00:09:27,880 Speaker 1: because it's curved in like a tear drop shape. Um, 166 00:09:27,880 --> 00:09:32,079 Speaker 1: it picks up speed right, so the air speed is increased, 167 00:09:32,120 --> 00:09:35,320 Speaker 1: which means the air pressure is also increased. Well beneath 168 00:09:35,360 --> 00:09:37,680 Speaker 1: the wing it's flat, the air is just going through 169 00:09:37,679 --> 00:09:41,560 Speaker 1: like it's whatever, but the air pressure is higher, so 170 00:09:41,640 --> 00:09:44,160 Speaker 1: you have lower air pressure at the top, higher pressure 171 00:09:44,200 --> 00:09:47,040 Speaker 1: at the bottom. That means that you have left that 172 00:09:47,200 --> 00:09:50,120 Speaker 1: believe that it's Bernoulli's principle, is it? I think? So? 173 00:09:50,360 --> 00:09:54,120 Speaker 1: Show off? No, not really so. So that's that's the 174 00:09:54,120 --> 00:09:57,080 Speaker 1: whole thing behind both airplane wings, like you said, and 175 00:09:57,320 --> 00:10:00,679 Speaker 1: boomerang wings. Because again, if you if you really kind 176 00:10:00,679 --> 00:10:04,640 Speaker 1: of want to start to understand boomerangs, um, first of all, 177 00:10:04,760 --> 00:10:09,280 Speaker 1: do more research than just listening to this podcast. But secondly, 178 00:10:09,320 --> 00:10:11,280 Speaker 1: you have to think of the boomerang is basically two 179 00:10:11,320 --> 00:10:17,120 Speaker 1: airplane wings facing the opposite direction connected together. Okay, that's right, 180 00:10:17,320 --> 00:10:20,920 Speaker 1: and that forms essentially a propeller. Yeah, and uh, a 181 00:10:20,960 --> 00:10:25,840 Speaker 1: propeller is um. Well, it's it's basically, if you think 182 00:10:25,840 --> 00:10:28,320 Speaker 1: about a boomerang, it has an axis, just like a 183 00:10:28,360 --> 00:10:31,720 Speaker 1: propeller does, but the axis isn't there. That makes sense, 184 00:10:32,040 --> 00:10:34,880 Speaker 1: it's invisible. The propeller is connected to something because it 185 00:10:34,880 --> 00:10:38,040 Speaker 1: has to lift the helicopter propeller cause that's the lift 186 00:10:38,040 --> 00:10:40,280 Speaker 1: the helicopter, or if it's on the front of a plane, 187 00:10:40,440 --> 00:10:44,240 Speaker 1: it's gonna pull that plane forward and up. Um, which 188 00:10:44,280 --> 00:10:47,280 Speaker 1: is sort of a key we'll get to in a second. Um. 189 00:10:47,320 --> 00:10:50,480 Speaker 1: But it's the same principle. But a boomerang just has 190 00:10:50,520 --> 00:10:53,760 Speaker 1: an invisible access let's say. Okay, so it does, and 191 00:10:53,760 --> 00:10:56,800 Speaker 1: it's very important because at that axis, which you can 192 00:10:56,840 --> 00:10:59,360 Speaker 1: just imagine is in the center of the boomerang where 193 00:10:59,400 --> 00:11:03,360 Speaker 1: the two wings come together, that's the access of rotation 194 00:11:03,520 --> 00:11:06,839 Speaker 1: that the boomerang has. It's spin. Yeah, and this article 195 00:11:06,880 --> 00:11:09,640 Speaker 1: does a good job of pointing out that. You would think, 196 00:11:09,679 --> 00:11:12,600 Speaker 1: then if you just turned it completely horizontally like a frisbee, 197 00:11:13,160 --> 00:11:16,079 Speaker 1: it would act like a helicopter propeller and just go up, yes, 198 00:11:16,160 --> 00:11:19,720 Speaker 1: straight up, or if you turned it completely vertically, which 199 00:11:19,760 --> 00:11:21,280 Speaker 1: is how you're supposed to throw it, it would just 200 00:11:21,280 --> 00:11:24,160 Speaker 1: go side to side. But it doesn't do either one 201 00:11:24,160 --> 00:11:26,920 Speaker 1: of those things. No, and it doesn't. And the reason 202 00:11:26,960 --> 00:11:31,680 Speaker 1: why is because if you turn on an air airplane 203 00:11:31,679 --> 00:11:36,840 Speaker 1: propeller or a helicopter propeller rotor, it's it starts from 204 00:11:36,840 --> 00:11:41,320 Speaker 1: a stationary position and just starts spinning, exactly the the 205 00:11:41,360 --> 00:11:45,200 Speaker 1: boomerang doesn't start from a stationary position. It starts spinning 206 00:11:45,200 --> 00:11:48,800 Speaker 1: along that central axis. And it's also thrown. Yeah, it's 207 00:11:48,800 --> 00:11:52,240 Speaker 1: got that forward momentum already exactly. So it has now 208 00:11:52,640 --> 00:11:55,360 Speaker 1: because you threw this thing. You threw it and it 209 00:11:55,400 --> 00:11:58,600 Speaker 1: started spinning around its own axis. But you also gave 210 00:11:58,640 --> 00:12:01,959 Speaker 1: it that forward momentum, which is linear momentum, which means 211 00:12:02,000 --> 00:12:07,080 Speaker 1: that it's now spinning around two axes. That's right, Okay, 212 00:12:07,240 --> 00:12:11,800 Speaker 1: this is is this gyroscopic procession. We're close, we're almost there, 213 00:12:13,320 --> 00:12:15,760 Speaker 1: and we get there chucked because of these two axes. 214 00:12:15,760 --> 00:12:18,200 Speaker 1: So consider this. So the thing is just spinning around. 215 00:12:18,240 --> 00:12:20,719 Speaker 1: You've just thrown in. Its upright at a vertical it's 216 00:12:20,840 --> 00:12:24,880 Speaker 1: vertically oriented to the earth, and you throw it, and 217 00:12:24,880 --> 00:12:28,120 Speaker 1: when you throw it say it has a spin around 218 00:12:28,120 --> 00:12:31,079 Speaker 1: that imaginary axis in the middle of the boomerang or 219 00:12:31,120 --> 00:12:36,040 Speaker 1: at that point at like twenty kilometers an hour. Okay, 220 00:12:36,280 --> 00:12:39,760 Speaker 1: because in Australia koter exactly well. Plus also I read 221 00:12:39,760 --> 00:12:42,560 Speaker 1: a Japanese paper on this. That's what they use and 222 00:12:42,640 --> 00:12:46,720 Speaker 1: it makes sense. Um, And but you threw it that 223 00:12:46,720 --> 00:12:50,240 Speaker 1: that that energy your arm transferred to it when you 224 00:12:50,320 --> 00:12:53,640 Speaker 1: threw the frisbee to which gave it its linear momentum. 225 00:12:53,800 --> 00:12:56,960 Speaker 1: Say that's making it move through space at a hundred 226 00:12:57,000 --> 00:13:01,440 Speaker 1: kilometers per hour. Okay, that's right. So as the things spinning, 227 00:13:02,120 --> 00:13:05,280 Speaker 1: whatever blade is at the top of the of the 228 00:13:05,360 --> 00:13:09,040 Speaker 1: spin is going in the direction that you threw it, right, 229 00:13:09,559 --> 00:13:11,440 Speaker 1: and you threw it at a hundred miles an hour, 230 00:13:12,120 --> 00:13:15,080 Speaker 1: and it's spinning at twenty kilometers an hour. That means 231 00:13:15,120 --> 00:13:17,480 Speaker 1: that that top blade is spinning at a hundred and 232 00:13:17,559 --> 00:13:20,280 Speaker 1: twenty kilometers an hour. You said miles. But yeah, we 233 00:13:20,400 --> 00:13:26,400 Speaker 1: get it, Okay. I'm like, I'm just just barely hanging 234 00:13:26,440 --> 00:13:29,200 Speaker 1: on here. The bottom one, though, is going in the 235 00:13:29,240 --> 00:13:34,600 Speaker 1: opposite direction, so you're it's actually moving at twenty or 236 00:13:34,679 --> 00:13:37,520 Speaker 1: eighty kilometers per hour. So the top is a hundred 237 00:13:37,559 --> 00:13:41,959 Speaker 1: and twenty. The bottom one is working in the opposite direction, 238 00:13:42,000 --> 00:13:44,480 Speaker 1: so it's going eighty kilometers per hour. But these things 239 00:13:44,520 --> 00:13:49,280 Speaker 1: are attached to the same thing, so this difference actually 240 00:13:49,400 --> 00:13:54,760 Speaker 1: creates a difference in air pressure to its vertical orientation, 241 00:13:55,400 --> 00:14:00,000 Speaker 1: which creates torque, which tilts it. Now we've entered gyros 242 00:14:00,040 --> 00:14:04,160 Speaker 1: copic procession. Yeah, and I think I precession. I think 243 00:14:04,200 --> 00:14:06,160 Speaker 1: I sort of said it like procession, but it's within 244 00:14:06,240 --> 00:14:09,480 Speaker 1: e Yeah, it's like what gives Earth seasons. Yeah, that wobble. 245 00:14:09,679 --> 00:14:12,920 Speaker 1: The spin is another part of a very important part 246 00:14:13,280 --> 00:14:15,480 Speaker 1: because when you throw it, and we'll get into exactly 247 00:14:15,480 --> 00:14:17,200 Speaker 1: how to throw it here in a bit, but you 248 00:14:17,200 --> 00:14:19,000 Speaker 1: want to give it a good wrist snap to give 249 00:14:19,000 --> 00:14:21,640 Speaker 1: it as much spin as possible. Uh. And the spin 250 00:14:21,720 --> 00:14:24,480 Speaker 1: is gonna be determined basically the rate of spin by 251 00:14:24,520 --> 00:14:27,360 Speaker 1: a few things. The length to the wings, um, you know, 252 00:14:27,400 --> 00:14:29,640 Speaker 1: if they're these huge wings, it's the spin isn't going 253 00:14:29,680 --> 00:14:31,960 Speaker 1: to be as great, Uh, the angle that they're joined, 254 00:14:32,160 --> 00:14:35,840 Speaker 1: and the amount of force applied by you the thrower. 255 00:14:36,000 --> 00:14:39,080 Speaker 1: And just like a gyroscope, which if we really wanted 256 00:14:39,080 --> 00:14:42,280 Speaker 1: to torture ourselves, we should do one on gyroscopes. Man, 257 00:14:42,600 --> 00:14:45,240 Speaker 1: that would be melt. My brain would melt. Yeah, I 258 00:14:45,280 --> 00:14:47,400 Speaker 1: just my brain didn't process that stuff well. But um, 259 00:14:47,400 --> 00:14:50,840 Speaker 1: like a gyroscope, it's gonna have more stability the faster 260 00:14:50,920 --> 00:14:53,040 Speaker 1: it spin. So that's why you want that good risk snap. Yeah. 261 00:14:53,080 --> 00:14:55,280 Speaker 1: And the reason why it has more stabilities because so 262 00:14:55,320 --> 00:14:59,760 Speaker 1: that torque, that pressure that that's being created by that 263 00:15:00,000 --> 00:15:03,320 Speaker 1: difference in air pressure. Um, that forces being pushed down 264 00:15:03,960 --> 00:15:09,800 Speaker 1: is actually stabilized throughout the spin of the boomerang. Right. Yeah. 265 00:15:09,880 --> 00:15:12,280 Speaker 1: Like if you're going super fast on a bicycle and 266 00:15:12,400 --> 00:15:15,880 Speaker 1: you take your hands off the handlebars, you're gonna keep 267 00:15:15,880 --> 00:15:18,560 Speaker 1: going straight. If you're going like super slow, you're gonna 268 00:15:18,560 --> 00:15:21,920 Speaker 1: start wobbling around, right exactly. Um. The thing is is 269 00:15:21,960 --> 00:15:25,680 Speaker 1: that pressure, that force of torque is constant, so it 270 00:15:25,760 --> 00:15:30,680 Speaker 1: eventually because I think procession is if you're throwing with 271 00:15:30,720 --> 00:15:34,240 Speaker 1: your right hand, procession always comes on in a counterclockwise motion. 272 00:15:35,160 --> 00:15:39,800 Speaker 1: The torque turns, It turns the boomerang to the sides, 273 00:15:39,920 --> 00:15:42,880 Speaker 1: which is why it eventually comes back around to you horizontally. 274 00:15:43,320 --> 00:15:46,120 Speaker 1: That's what lays it down, and it also brings it 275 00:15:46,200 --> 00:15:49,040 Speaker 1: in an arc that forms a circular path that comes 276 00:15:49,040 --> 00:15:53,960 Speaker 1: back to you. It's all gyroscopic precession. And it's because 277 00:15:54,400 --> 00:15:59,040 Speaker 1: the boomerang, this little simple stick that's basically one crescent 278 00:15:59,040 --> 00:16:03,360 Speaker 1: shaped piece of wood, turns into a gyroscope that that 279 00:16:03,560 --> 00:16:08,200 Speaker 1: turns on three axis all at once. Yeah, all on 280 00:16:08,280 --> 00:16:11,240 Speaker 1: one throw. And so it goes from straight it goes 281 00:16:11,280 --> 00:16:14,720 Speaker 1: from stationary being straight up and down to spinning and 282 00:16:14,840 --> 00:16:18,600 Speaker 1: curving around an arc back to you at a hundred 283 00:16:18,680 --> 00:16:22,920 Speaker 1: kilometers an hour, all because you tossed it correctly. Yeah. 284 00:16:22,960 --> 00:16:25,000 Speaker 1: And the the design, I mean, there are many, many 285 00:16:25,040 --> 00:16:27,960 Speaker 1: different designs of boomerangs. Um, Like I said, they can 286 00:16:28,000 --> 00:16:32,320 Speaker 1: have two wings, three four, you can look like crawl 287 00:16:32,960 --> 00:16:35,880 Speaker 1: and and have blades attached to them. Because there is 288 00:16:35,920 --> 00:16:39,160 Speaker 1: something called a battle boomerang. Yeah, um man, that's that 289 00:16:39,200 --> 00:16:41,840 Speaker 1: seems dangerous. Yea, it seems totally dangerous. I'll bet you 290 00:16:41,840 --> 00:16:43,880 Speaker 1: can find that at like a head shop somewhere next 291 00:16:43,880 --> 00:16:47,800 Speaker 1: to like a dragon pewter statue or something. You're probably 292 00:16:47,800 --> 00:16:51,000 Speaker 1: the deal you can bind together for cheaper. Um. Some 293 00:16:51,080 --> 00:16:53,880 Speaker 1: of them do. Some of them have what's called turbulators though, 294 00:16:53,920 --> 00:16:55,600 Speaker 1: which are can be a little bumps and pits on 295 00:16:55,680 --> 00:16:59,000 Speaker 1: top which can increase the lift even more. And uh, 296 00:16:59,120 --> 00:17:02,360 Speaker 1: I read an interview with one boomerang builder, and he 297 00:17:02,440 --> 00:17:04,760 Speaker 1: was like, you can't. You know, I'm sure like NERF 298 00:17:04,880 --> 00:17:07,520 Speaker 1: can with their their you know, soft ones, but like 299 00:17:07,560 --> 00:17:10,240 Speaker 1: a true large three ft wooden boomerang, he said, you 300 00:17:10,280 --> 00:17:13,879 Speaker 1: can't computerize these and build them like they kind of 301 00:17:13,920 --> 00:17:17,919 Speaker 1: need to be handcrafted and thrown and then tweaked and 302 00:17:17,920 --> 00:17:20,119 Speaker 1: then thrown so you get it just right. And I 303 00:17:20,160 --> 00:17:23,600 Speaker 1: saw um one of the U S Boomerang team guys 304 00:17:23,960 --> 00:17:26,719 Speaker 1: demonstrating on video and he just put like a rubber 305 00:17:26,720 --> 00:17:30,119 Speaker 1: band on his two I guess adjust it. So that 306 00:17:30,160 --> 00:17:32,600 Speaker 1: makes sense, yeah, because you know, like if you're if 307 00:17:32,600 --> 00:17:35,080 Speaker 1: you have a ceiling fan or something like that, you 308 00:17:35,119 --> 00:17:38,000 Speaker 1: can add weights or something to stabilize it. That kind 309 00:17:38,000 --> 00:17:40,480 Speaker 1: of thing. Yeah, Or when you get a when you 310 00:17:40,520 --> 00:17:43,080 Speaker 1: get your tires and start installed in your car, you know, 311 00:17:43,119 --> 00:17:45,800 Speaker 1: they put those little on those lead weights they to 312 00:17:46,119 --> 00:17:49,240 Speaker 1: uh what's it called align it? Yeah, to align it 313 00:17:49,560 --> 00:17:51,600 Speaker 1: they put on that machine and if it's wobbling, they'll 314 00:17:51,600 --> 00:17:55,280 Speaker 1: add the little weights. Yeah. I thought they thought there's 315 00:17:55,280 --> 00:17:57,320 Speaker 1: a wizard in back. You're always in the waiting room 316 00:17:57,400 --> 00:18:01,920 Speaker 1: drinking coffee and reading, browsing thelar making executer dragon statutes. No, 317 00:18:02,000 --> 00:18:04,360 Speaker 1: it's kind of cool Actually, I think it's kind of cool. 318 00:18:04,359 --> 00:18:07,359 Speaker 1: It's really kind of nerdy to watch your tires get aligned, 319 00:18:07,800 --> 00:18:09,919 Speaker 1: to put it on the machine and spin it, and 320 00:18:09,960 --> 00:18:11,600 Speaker 1: it's really kind of just like this, and they look 321 00:18:11,640 --> 00:18:13,520 Speaker 1: at it and if it's if it's wabbling at all, 322 00:18:13,560 --> 00:18:16,240 Speaker 1: they know exactly where to tap on these little weights, 323 00:18:16,320 --> 00:18:18,600 Speaker 1: because yeah, you don't want your tires to be the gyroscope, 324 00:18:19,280 --> 00:18:21,679 Speaker 1: not at all. You don't. That makes for unsafe driving. 325 00:18:22,320 --> 00:18:24,800 Speaker 1: Uh So I guess we should after this message break 326 00:18:25,800 --> 00:18:38,360 Speaker 1: teach you how to throw a boomerang. All right, you've 327 00:18:38,359 --> 00:18:41,520 Speaker 1: got your boomerang. You're out in the field or on 328 00:18:41,560 --> 00:18:44,399 Speaker 1: the beach. Beach is gonna be tough because wind is 329 00:18:44,440 --> 00:18:46,840 Speaker 1: one of the forces that are going to act on 330 00:18:46,840 --> 00:18:51,560 Speaker 1: that boomerang. There are five forces nervous force of gravity, 331 00:18:52,280 --> 00:18:55,520 Speaker 1: the force caused by that propeller motion, the force of 332 00:18:55,560 --> 00:18:59,880 Speaker 1: your throw, uh, force caused by uneven speed of the wing, 333 00:19:00,440 --> 00:19:02,800 Speaker 1: and then the wind. And the guy that I watched 334 00:19:02,800 --> 00:19:05,960 Speaker 1: throw on on YouTube um said that he liked to 335 00:19:06,040 --> 00:19:10,399 Speaker 1: throw on with a slight breeze in his face. And 336 00:19:10,440 --> 00:19:13,240 Speaker 1: he said that that Um, it depends on the angle 337 00:19:13,280 --> 00:19:15,320 Speaker 1: at which you're going to release it, though, depending on 338 00:19:15,359 --> 00:19:16,760 Speaker 1: how the wind, and there's a lot of trial and 339 00:19:16,800 --> 00:19:20,679 Speaker 1: air involved, and it's yeah, apparently you you want wind. 340 00:19:20,840 --> 00:19:23,199 Speaker 1: I couldn't figure out what the deal is with this, 341 00:19:23,320 --> 00:19:28,160 Speaker 1: but um it somehow helps the boomerang move. But you 342 00:19:28,440 --> 00:19:30,879 Speaker 1: have what's called an angle of attack, and that's basically 343 00:19:30,880 --> 00:19:33,800 Speaker 1: how you orient yourself to the wind. The winds blowing 344 00:19:33,840 --> 00:19:38,840 Speaker 1: in your face, you should turn and face. You don't 345 00:19:38,840 --> 00:19:41,080 Speaker 1: want your shoulder now being hit by the wind, because 346 00:19:41,080 --> 00:19:43,360 Speaker 1: that's ninety degrees. He turned a little bit to the right, 347 00:19:43,520 --> 00:19:46,920 Speaker 1: so probably about like forty five degrees, and that's what 348 00:19:46,960 --> 00:19:49,879 Speaker 1: you throw too, So you're throwing at an angle to 349 00:19:50,000 --> 00:19:52,520 Speaker 1: the direction the wind is coming in. Yeah, but this 350 00:19:52,560 --> 00:19:55,040 Speaker 1: guy kind of worked it out like he threw the um, 351 00:19:55,080 --> 00:19:57,639 Speaker 1: you know, he kind of measured the wind. Uh, you know, 352 00:19:57,680 --> 00:20:00,959 Speaker 1: did the old finger test. Yeah, and he said, I'm 353 00:20:00,960 --> 00:20:03,000 Speaker 1: gonna angle myself a little bit to the right and 354 00:20:03,040 --> 00:20:04,919 Speaker 1: I'm gonna throw it. And he said, and it should 355 00:20:05,000 --> 00:20:07,960 Speaker 1: land just in front of me. It went behind him. 356 00:20:08,040 --> 00:20:10,359 Speaker 1: And he was like, well, I was wrong, so I 357 00:20:10,400 --> 00:20:12,160 Speaker 1: didn't have a good wind measurement, so let me angle 358 00:20:12,160 --> 00:20:15,080 Speaker 1: a little bit more, and sure enough, the thing came 359 00:20:15,440 --> 00:20:18,359 Speaker 1: right back to him. Nice. So it all depends on 360 00:20:18,440 --> 00:20:22,280 Speaker 1: what angle against the wind that you throw that thing, 361 00:20:22,960 --> 00:20:27,040 Speaker 1: Bob say, Oh man, I can't stand that guy, really, 362 00:20:27,080 --> 00:20:32,200 Speaker 1: Bob Seeker. Yeah, I don't have anything against him, honestly. Yeah, 363 00:20:32,359 --> 00:20:34,320 Speaker 1: that old time rock and roll song. I just turned 364 00:20:34,320 --> 00:20:36,600 Speaker 1: that a song. That's his first piano keys. Yeah, I 365 00:20:36,600 --> 00:20:39,960 Speaker 1: hate that song. Yeah, but overall I think Bob Seekers. Okay, 366 00:20:40,160 --> 00:20:42,840 Speaker 1: he seems fine. He's a he's a working man. Yeah, yeah, 367 00:20:43,000 --> 00:20:45,959 Speaker 1: turned the page baby. Oh yeah, I don't like that 368 00:20:45,960 --> 00:20:48,240 Speaker 1: song either. I guess it's like against the wind, like 369 00:20:48,320 --> 00:20:52,400 Speaker 1: a rock Oh. I hate that song, Hollywood Knights. That's 370 00:20:52,400 --> 00:20:54,720 Speaker 1: a terrible song too. You hate Bob Seeker, No, but 371 00:20:54,800 --> 00:20:57,600 Speaker 1: I don't mind against the Wind. Surely there's other Bob 372 00:20:57,600 --> 00:21:00,640 Speaker 1: Seekers songs outre Bob, get in touch with us and 373 00:21:00,800 --> 00:21:04,080 Speaker 1: introduced me to your catalog. That would be great if 374 00:21:04,119 --> 00:21:06,879 Speaker 1: he was a listener. Actually, he's just got a single 375 00:21:06,920 --> 00:21:10,160 Speaker 1: tier doing on his cheeks. All right, So where were 376 00:21:10,200 --> 00:21:12,400 Speaker 1: we we are? All right? You're gonna hold the boomerang 377 00:21:13,040 --> 00:21:16,080 Speaker 1: with the V with the elbow pointing towards you and 378 00:21:16,119 --> 00:21:18,920 Speaker 1: the V pointing out away from you, and again up 379 00:21:18,960 --> 00:21:22,879 Speaker 1: and down. It's vertically oriented. Yeah, vertically orient but at 380 00:21:22,880 --> 00:21:25,440 Speaker 1: a slight tilt, like you don't want it completely straight 381 00:21:25,480 --> 00:21:27,640 Speaker 1: up and down, but you're not throwing it like horizontally 382 00:21:27,640 --> 00:21:30,359 Speaker 1: Like no, no, you're not gonna get very far that way. No. 383 00:21:30,520 --> 00:21:33,840 Speaker 1: Actually it does go up and then comes back down 384 00:21:34,000 --> 00:21:37,080 Speaker 1: in a loop. It basically does totally do something. Yeah, 385 00:21:37,480 --> 00:21:41,240 Speaker 1: but interesting. Yeah, the thing is it's kind of dangerous, 386 00:21:41,240 --> 00:21:43,000 Speaker 1: so you don't want to mess around with it. Yeah, 387 00:21:43,040 --> 00:21:44,680 Speaker 1: I mean we should point that out. These things are 388 00:21:44,960 --> 00:21:46,920 Speaker 1: you know, heavy and made of wood and they come 389 00:21:47,680 --> 00:21:49,879 Speaker 1: you know you're throwing it hard. Well yeah, I mean 390 00:21:49,960 --> 00:21:52,840 Speaker 1: let's cut to the chase. Apparently when you throw a 391 00:21:52,920 --> 00:21:57,880 Speaker 1: frisbee or a boomerang, which are virtually interchangeable in my mind, 392 00:21:57,920 --> 00:22:01,120 Speaker 1: but they're really not not at all. Um, you want 393 00:22:01,119 --> 00:22:03,439 Speaker 1: to keep your eye on it at all times, and 394 00:22:03,520 --> 00:22:05,720 Speaker 1: if you ever lose sight of it, you don't look 395 00:22:05,760 --> 00:22:09,760 Speaker 1: around for it. You need to go take cover, cover 396 00:22:09,840 --> 00:22:13,560 Speaker 1: your head and shout heads up and get everybody else 397 00:22:13,600 --> 00:22:15,399 Speaker 1: to cover their heads too, because that thing can come 398 00:22:15,440 --> 00:22:18,080 Speaker 1: back and collock somebody. Yeah, and that's if you haven't 399 00:22:18,240 --> 00:22:21,640 Speaker 1: thrown it right. Like when I've seen the correct boomerang toss, 400 00:22:21,440 --> 00:22:25,199 Speaker 1: it lands like a helicopter. Um, you know, straight up 401 00:22:25,240 --> 00:22:27,400 Speaker 1: and down. So it's completely straight up and down. What 402 00:22:27,400 --> 00:22:29,280 Speaker 1: what's the next step? All right, So you've got that 403 00:22:29,359 --> 00:22:32,040 Speaker 1: v point pointing away from you, and you want putting 404 00:22:32,160 --> 00:22:35,200 Speaker 1: at you. No, no no, no, the two the you want 405 00:22:35,200 --> 00:22:37,640 Speaker 1: the point facing towards you and the be facing away 406 00:22:37,680 --> 00:22:40,560 Speaker 1: from you, and you want It's super important this part 407 00:22:40,680 --> 00:22:42,920 Speaker 1: is you want that flat side. Remember we talked about 408 00:22:42,920 --> 00:22:46,160 Speaker 1: the airfoil. You want the flat side facing out so 409 00:22:46,240 --> 00:22:49,560 Speaker 1: to your right. If you're a right handed thrower, if 410 00:22:49,600 --> 00:22:52,359 Speaker 1: you don't do that right then you're you're not gonna 411 00:22:52,400 --> 00:22:55,280 Speaker 1: have a good result. Yeah, you would only probably tilt 412 00:22:55,320 --> 00:22:58,080 Speaker 1: it to the left of the wind if you're left handed. 413 00:22:58,119 --> 00:23:01,399 Speaker 1: I would guess I don't know about that, Okay, I 414 00:23:01,400 --> 00:23:04,800 Speaker 1: don't endorse that state. Okay. Um, So you're gonna hold 415 00:23:04,800 --> 00:23:06,920 Speaker 1: it at the bottom of the wing, um like they 416 00:23:06,960 --> 00:23:09,320 Speaker 1: say a pinch grip. The guy in the video called 417 00:23:09,400 --> 00:23:11,359 Speaker 1: his a little pistol grip, like with two fingers and 418 00:23:11,359 --> 00:23:16,960 Speaker 1: a thumb, and um, you want to snap your wrist 419 00:23:17,119 --> 00:23:19,120 Speaker 1: when you throw it. And he didn't throw it super hard, 420 00:23:19,960 --> 00:23:22,040 Speaker 1: like you don't have to really wing it. Yeah, he didn't. 421 00:23:22,119 --> 00:23:24,000 Speaker 1: He didn't sound like stephie Graff when he threw it 422 00:23:24,119 --> 00:23:28,440 Speaker 1: or anything. Monica Sellis You mean I thought stephie Graft 423 00:23:28,440 --> 00:23:30,400 Speaker 1: did that too? Was that Monica Sellis? There's a lot 424 00:23:30,400 --> 00:23:35,160 Speaker 1: of grunters, but Monica Sellis she had it. That's who 425 00:23:35,160 --> 00:23:37,320 Speaker 1: I meant. Then, but she got stabbed. Look what happened 426 00:23:37,320 --> 00:23:39,960 Speaker 1: to her. Oh gosh, I thought that was stephie Graff too. 427 00:23:41,119 --> 00:23:44,359 Speaker 1: Did you know stephie Graff and Andre Agasi are married? Yeah? 428 00:23:44,520 --> 00:23:47,600 Speaker 1: Isn't that cute? It's adorable? Okay, you would be funny 429 00:23:47,640 --> 00:23:51,159 Speaker 1: as if their kids were terrible at dinnis. They just 430 00:23:51,200 --> 00:23:55,520 Speaker 1: trip over their rackets whatever. Um, Bob seekers their coach, 431 00:23:55,840 --> 00:23:59,600 Speaker 1: that's right, he's they're bad mitten coach. All right. So 432 00:23:59,680 --> 00:24:01,840 Speaker 1: you you are snapping your wrist. You're throwing it basically 433 00:24:01,920 --> 00:24:04,720 Speaker 1: like a baseball at a little slight angle, and you're 434 00:24:04,720 --> 00:24:07,880 Speaker 1: gonna snap that wrist to give it the good spin. Um, 435 00:24:08,160 --> 00:24:12,840 Speaker 1: you throw it vertically and hopefully it's gonna go out 436 00:24:13,160 --> 00:24:16,160 Speaker 1: and up and curve around and then land back down 437 00:24:16,680 --> 00:24:19,920 Speaker 1: fairly softly, somewhere close to where you are. And you 438 00:24:19,960 --> 00:24:21,360 Speaker 1: don't want to try and catch it with your hand 439 00:24:21,400 --> 00:24:23,480 Speaker 1: like in a cartoon. Well you can, but you want 440 00:24:23,480 --> 00:24:28,040 Speaker 1: to clap your hands together on yeah, yeah, like, don't 441 00:24:28,080 --> 00:24:29,960 Speaker 1: try and catch it like a frisbee. No, but I 442 00:24:30,000 --> 00:24:33,120 Speaker 1: think if you are a boomerang throwing person, you are 443 00:24:33,160 --> 00:24:35,720 Speaker 1: trying to catch each one. Oh yeah, yeah, but you're 444 00:24:36,760 --> 00:24:38,760 Speaker 1: a one hand and it's you clap it together, you 445 00:24:39,160 --> 00:24:41,240 Speaker 1: trap it in between your two hands. Yeah. And if 446 00:24:41,240 --> 00:24:44,120 Speaker 1: you're catching a frisbee like that, then God help you. Yeah, 447 00:24:44,160 --> 00:24:47,920 Speaker 1: you're gonna get laughed at. But it's safe to It's 448 00:24:47,960 --> 00:24:50,760 Speaker 1: just you don't really have to be worried about it. Frisbee, 449 00:24:50,800 --> 00:24:54,760 Speaker 1: it's super safe. Uh. I don't think I have anything else? 450 00:24:54,840 --> 00:24:57,360 Speaker 1: Is that it? Well, just one other thing. Um. When 451 00:24:57,359 --> 00:25:00,200 Speaker 1: I said that it's spinning around three axes. If were 452 00:25:00,240 --> 00:25:04,160 Speaker 1: impressed with that, prepared to have your mind blown even more. 453 00:25:04,560 --> 00:25:09,160 Speaker 1: It's spinning around three axes to lay down flat from 454 00:25:09,160 --> 00:25:13,200 Speaker 1: the torque. It's also spinning around an additional three axes 455 00:25:13,520 --> 00:25:16,440 Speaker 1: to follow that arc in a giant circle and come 456 00:25:16,480 --> 00:25:20,320 Speaker 1: back to you. So technically a boomerang when you throw 457 00:25:20,320 --> 00:25:23,640 Speaker 1: it is spinning on six different axis from the point 458 00:25:23,680 --> 00:25:27,320 Speaker 1: of release to the point of landing. Wow, you're not neat. 459 00:25:27,520 --> 00:25:29,720 Speaker 1: It's pretty neat. Yeah, it's neat. And like this is 460 00:25:29,720 --> 00:25:31,800 Speaker 1: one of those things where people were throwing these things 461 00:25:32,000 --> 00:25:35,639 Speaker 1: long before we knew anything about how they actually worked. 462 00:25:35,640 --> 00:25:38,560 Speaker 1: People figured them out, and then science came along afterward 463 00:25:38,600 --> 00:25:40,560 Speaker 1: and said, oh, well, this is how it works, but 464 00:25:40,600 --> 00:25:45,360 Speaker 1: this stuff is so complex. Really kind of exposes that 465 00:25:45,440 --> 00:25:47,560 Speaker 1: moment in science where you're like, I kind of have 466 00:25:47,640 --> 00:25:50,960 Speaker 1: to have faith in this because I understand it so 467 00:25:51,200 --> 00:25:53,760 Speaker 1: thinly that I just have to have faith that this 468 00:25:53,840 --> 00:25:58,000 Speaker 1: is correct. And it's almost virtually the same thing as saying, well, 469 00:25:58,080 --> 00:26:01,919 Speaker 1: the there's the gray wizard is the one who's moving 470 00:26:01,960 --> 00:26:04,520 Speaker 1: it around in an invisible circle back to you because 471 00:26:04,520 --> 00:26:06,480 Speaker 1: he wants you to prosper and not have to make 472 00:26:06,760 --> 00:26:09,359 Speaker 1: a boomerang every time. Virtually the same thing at this 473 00:26:09,440 --> 00:26:12,520 Speaker 1: point in my understanding. Yeah, they're a great teaching tool 474 00:26:12,520 --> 00:26:14,400 Speaker 1: as well. Um, I imagine if you're trying to teach 475 00:26:14,400 --> 00:26:18,040 Speaker 1: physics in gyroscopic procession, then the problem is everybody, almost 476 00:26:18,080 --> 00:26:22,400 Speaker 1: everybody I saw, except for the Japanese paper I think 477 00:26:22,400 --> 00:26:25,960 Speaker 1: it was titled what makes a Boomerang come Back? Um, 478 00:26:26,480 --> 00:26:29,359 Speaker 1: we're just terrible at explaining it. They understood everything, but 479 00:26:29,440 --> 00:26:32,720 Speaker 1: they could not explain it in anything approaching Layman's terms. 480 00:26:32,840 --> 00:26:36,879 Speaker 1: You know, I read a popular science article. Um, I 481 00:26:36,880 --> 00:26:39,240 Speaker 1: think it's called the Science of Boomerangs. That was pretty good. 482 00:26:39,359 --> 00:26:41,400 Speaker 1: Wish you would have sent that to me because I've 483 00:26:41,400 --> 00:26:45,040 Speaker 1: been agonizing over this for many, many, many, many many hours. 484 00:26:45,040 --> 00:26:47,320 Speaker 1: I just figured you had your Japanese sources and we're good. 485 00:26:48,280 --> 00:26:51,359 Speaker 1: It was in English too, well, of course it was, 486 00:26:51,920 --> 00:26:56,160 Speaker 1: uh because gen Japanese. So good. Uh. If you want 487 00:26:56,160 --> 00:26:58,440 Speaker 1: to know more about boomerangs, you can look up stuff 488 00:26:58,480 --> 00:27:01,120 Speaker 1: all over the web. But why not star at our 489 00:27:01,160 --> 00:27:03,880 Speaker 1: website how Stuff works dot Com. It's type that word 490 00:27:03,880 --> 00:27:06,359 Speaker 1: in the search bar and it will bring it up. 491 00:27:06,440 --> 00:27:09,120 Speaker 1: And since I said search bar, it's time for listener mail. 492 00:27:12,280 --> 00:27:14,680 Speaker 1: I'm just gonna call this I split Atoms for a Living, 493 00:27:15,760 --> 00:27:18,439 Speaker 1: So you know we're on the wrong track already. Yeah, 494 00:27:18,640 --> 00:27:21,000 Speaker 1: we're going to be corrected. Uh yeah, but he's very 495 00:27:21,080 --> 00:27:22,800 Speaker 1: nice about it. I split Atoms for Living at a 496 00:27:22,840 --> 00:27:24,639 Speaker 1: nuclear power plant. So I was really excited that you 497 00:27:24,680 --> 00:27:28,680 Speaker 1: did a podcast on nuclear science topic. Um. You guys 498 00:27:28,720 --> 00:27:30,480 Speaker 1: really did a great job actually of breaking down a 499 00:27:30,560 --> 00:27:33,160 Speaker 1: topic and making it accessible to a wide audience. Something 500 00:27:33,200 --> 00:27:37,320 Speaker 1: I personally feel that organizations involved with new nuclear technology 501 00:27:37,359 --> 00:27:40,120 Speaker 1: tend to struggle with a little bit Um anyway, I'm 502 00:27:40,160 --> 00:27:43,600 Speaker 1: running in with a correction. You sayd that nuclear fission 503 00:27:43,640 --> 00:27:48,040 Speaker 1: reactions involved the electromagnetic force, while nuclear fusion reactions involved 504 00:27:48,040 --> 00:27:52,080 Speaker 1: the strong nuclear force. I remember saying that both of 505 00:27:52,119 --> 00:27:54,920 Speaker 1: these reactions actually get their energy from the same strong 506 00:27:55,000 --> 00:27:57,600 Speaker 1: nuclear force. In both cases, if you were to measure 507 00:27:57,600 --> 00:28:00,199 Speaker 1: the mass of the material before the reaction compared that 508 00:28:00,240 --> 00:28:02,520 Speaker 1: to the material after the reaction, you would find that 509 00:28:02,560 --> 00:28:05,560 Speaker 1: there's less because some of the strong nuclear force holding 510 00:28:05,840 --> 00:28:08,760 Speaker 1: the atoms together was released his energy. The difference in 511 00:28:08,800 --> 00:28:11,400 Speaker 1: the energy release pretty much comes down to how much 512 00:28:11,440 --> 00:28:14,639 Speaker 1: of this mass was converted divided by the mass of 513 00:28:14,640 --> 00:28:17,919 Speaker 1: the atoms involved. Hey, let's see. The thing is is 514 00:28:17,960 --> 00:28:20,560 Speaker 1: like that makes total and complete sense if you think 515 00:28:20,640 --> 00:28:23,440 Speaker 1: about it. Sure that that makes it irritating that we 516 00:28:23,560 --> 00:28:26,919 Speaker 1: got it wrong. Uh. Since adams um good for fusion 517 00:28:26,920 --> 00:28:29,800 Speaker 1: are much lighter than adams good for fission, their reactions 518 00:28:29,800 --> 00:28:32,439 Speaker 1: are a bit stronger. Reactions which involve the release of 519 00:28:32,480 --> 00:28:36,560 Speaker 1: stored electromagnetic energy are actually all of the reactions that 520 00:28:36,600 --> 00:28:39,960 Speaker 1: involve electrons, which includes chemical reactions, Since this is a 521 00:28:40,040 --> 00:28:42,840 Speaker 1: much weaker force. That's why there are such a huge 522 00:28:42,960 --> 00:28:45,880 Speaker 1: energy difference between burning coal and nuclear energy. As you 523 00:28:45,920 --> 00:28:49,200 Speaker 1: pointed out, the podcasts millions of times more potent. So 524 00:28:49,280 --> 00:28:51,280 Speaker 1: thanks again guys. Looking forward to the next one, and 525 00:28:51,320 --> 00:28:57,600 Speaker 1: that is Jeffrey Hausiman from He's a reactor engineer in Zachary, Louisiana. 526 00:28:58,080 --> 00:29:01,360 Speaker 1: Thank you very much. What's his name again, Jeffrey, Jeffrey. 527 00:29:01,400 --> 00:29:05,960 Speaker 1: Appreciate that we love hearing from experts in the field. Uh. 528 00:29:06,000 --> 00:29:08,360 Speaker 1: If you're an expert in your field and you want 529 00:29:08,360 --> 00:29:11,040 Speaker 1: to correct us about something or whatever we want to 530 00:29:11,080 --> 00:29:13,040 Speaker 1: hear from you, you can tweet to us at s 531 00:29:13,160 --> 00:29:15,720 Speaker 1: y s K podcast and join us on Facebook dot com, 532 00:29:15,720 --> 00:29:17,760 Speaker 1: slash stuff you Should Know. 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