Could Sound Make You Levitate?

This episode is brought to you by Cancer Research UK. Dinosaurs walked the Earth 180 million years ago. But you know, cancer was part of their story too. Scientists have found tumors in ancient fossils. Well, that is a part of the reason why cancer is a big part of our story, right? It's the other side of evolution. It's the most complex disease that we face. There are more than 200 types of cancer in total, each with distinct characteristics, challenges and mysteries. And that complexity demands scale. Cancer Research UK is the world's largest charitable funder of cancer research, with more than 4,000 scientists, doctors and nurses working across more than 20 countries in the search for answers. And then, sharing their discoveries beyond borders. And the impact of this collaboration is clear, because over the last 50 years, the charity's pioneering work has helped to double cancer survival in the UK. That is more people who are living longer, better lives. Bossils can show us the past, but research is shaping the future. And for more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit cancerresearchuk.org-forward-slash-rest-is-science. This episode is brought to you by Project Hail Mary, the new spectacular space adventure coming to cinemas. Okay, hypothetically, imagine that there's this mission to save our world. Only you can do the job. As this expert in mathematics and science, how do you think you would do? Terribly. But not because I love teaching and learning, because I'm a scaredy cat. But what about yourself, Hannah? I'm back myself, Michael. I think I'd be good. I just, I'd just be very slow. I think the point is that no one should rely on Hannah or I to save the world. In Project Hail Mary, Ryan Gosling stars as science teacher Ryland Grace, who is sent unexpectedly on an impossible mission to space to discover why the sun and stars are dying. He teams up with an unimaginable ally to defy all odds and save the universe from extinction. See Project Hail Mary in cinemas and IMAX from Thursday the 19th of March. You can also catch it early on Saturday the 14th of March, Friday and Sunday the 15th of March. Get started today at vancer.com. Would you like to levitate, Michael? I would love to. Every day. Wouldn't it be good? Wouldn't it be good? Well, today on Field Notes, I, uh, I'm going to keep you that chance. There's a couple of caveats. Small ones don't worry about them. We'll come to learn a bit. But I've got a, uh, a little acoustic levitator with me. Oh, really? Have you ever played with one of these? I have, but one that was so small, it could only levitate like a tiny little bead of styrofoam, polystyrene for those of you across the Atlantic, and it was so undramatic. That's exactly what I've got. Oh, no. Does it also make this noise that's like, and you're like, oh, please. Okay. Yeah, I've got bands and calculations. Let me say, let me say, I've never played with one, but I can't, I don't believe it's possible, especially something as cool to levitate as styrofoam. Oh, fuck, I'm like, I'm sorry. So that's why you brought me, you brought me, uh, a sonic levitator. And some calculations about how many of these things you'd need to levitate you. Okay. So what a wonderful intro. Aren't you excited to show this to me now? I've never packed myself for my, Michael. This is, uh, I mean, I should have managed your expectations a bit better. I should have not really. I should have said, yeah, I think, I think so, but I will say that, that, I've experienced it, but I think that you talking about it and explaining it will show me why it is so cool. We'll see, shall we? Okay. A friend of mine at Cambridge University has been toying around with this delacoustic levitator. Um, incidentally, actually, you know, mass departments are completely full of people who care a lot about acoustics. Do you know this? Yes, I bet. Like jet engines, for example, uh, when they were first created, they were so noisy that for starters, it was like completely unworkable for commercial flight. But secondly, the vibrations were so dramatic that they would break the components inside of the engine. And who do they turn to to make them all quiet? The mathematicians, my friend. Right. Um, there is a guy who, uh, a mathematician who works in the same department as me who is now working on a car seat that essentially works as noise cancellation for the road around you. Doesn't that sound nice? Oh, wow. Is it safe? I feel like I need to hear some of these noises. Do you? I think maybe if you're a passenger, maybe it's not for the driver. Okay. Okay. Anyway, there's just a lot of people who are working on acoustics and, uh, one of them, uh, has, uh, got this little acoustic levitator. So here is the acoustic levitator. It's a little 3D printed box. My friend is Matthew Nethercoach, by the way, who let me steal this, in order to impress you, Michael, which was, which is, I'll try a lot harder next time, but in that way. Um, okay. No, no, no, no. This looks cool. This looks cooler than the one that I've seen. It's like, it's like a hand size thing. And it looks like some kind of, uh, star trek teleporter. It does. Yeah. So you've got two bits. One, one at the top, one at the bottom and inside, um, there's a dome effectively that is filled with lots of knots of tiny little speakers that are pulled pointing towards this kind of central space sort of, hmm, how can you describe it? Uh, I never watch Star Trek. Um, but there's, um, some device in there where you teleport people. You sort of imagine stepping in here and being teleported. I think that's the best way to describe it. Yeah. Right. But those are speakers pointed up and down focused on some point in the very middle in between them. The idea here then is that, uh, sound is a wave, right? Sound is like, you have this membrane on a speaker that vibrates backwards and forwards. And as it does so, it pushes and then pulls the air that surrounds it, creating this wave. Um, now if you have all of these speakers that are tuned to exactly the right frequency and pointing in exactly the right way, then what should happen is that in some places, the, the vibrations will sort of add up together. And in some places, those vibrations will cancel each other out so that you should get some little effectively jail cells in here of air where the air is perfectly still while all the air around it is like vibrating like crazy. So is it running now? Is it producing the, the, the, the sound? It is, which, um, I can't hear. I assume you can't hear, but I can't hear it either. 100 meters down the road. There are several dogs that are now crying because it is so high pitched. I'm pretty high pitched. Okay. So the idea is that sound waves are compressed, the, the, the waves of air that's being compressed and rarified. And if you get what like two, two compressed waves side to side, you can like hold something in the air. Exactly. Now, can you change the frequency of the sound with this device and change where these levitation points are? Not this one. Unfortunately, I think I need to, to write a map to you, never count in 10 of these to make a more impressive device. I'm not down on this. I think it's really cool. I think it looks really neat. I know what you're thinking. That sounds fun, but I want to go. I want you to levitate me. Or at least an ant, you know, that would be. Well, yeah, no, I've, I've seen them levitate living frogs in laboratories with very powerful versions of this. And I'm wondering what the applications are beyond the amusement. Well, okay. Let's stick on the fun for a second here, because, because let's say the average human weighs about, I don't know, I was reckon 75 kilograms something. That's what I've done with the calculations. This particular levitator has 72 little transducers right around here. So if you wanted to raw power lift a human, you are going to need 216 million which is. Oh, I would say quite a lot. That's a lot, but let's say you did it. Let's say you did it. You're the sound or would it still be ultrasonic? Well, here's the thing. You need them to be like super, super loud, right? In order to, in order to actually have the sort of strength between them to be able to lift this human, you can get them up to about 120 decibels, but remember you've got 216 million of them. Now, the slight problem is that any sound above 170 decibels can cause organ and joint damage just because it vibrates you so violently that you start to implode. Anything above 240 decibels, that would be lethal. Wow. And so at 216 million, I think that the reality is, we could levitate you. It's just, it would be so loud your head might explode. Small caveat, small caveat. It's worth it. It's worth it. You want to drama? I can, you drama. So, okay, this is like a cute little fun toy that you can play with, but there is actually a reason behind this stuff. So in the 1960s, 1970s, NASA, they developed these kind of levitators. Partly because they wanted to see what it would be like to have effectively a microgravity environment. Oh, yeah. You can imagine if you were like suspending instead of tiny little balls here, you were suspending cells or like other sort of organic matter. It's effectively the same as like being suspended in zero gravity. You're not going to feel the force of the earth because it's counteracted by this little cage of air that is, that is wrapped around it. You can also put liquids in this, which is kind of interesting, but there are some quite interesting medical applications if people have kidney stones in their body. What you can do is with acoustic beams is nudge small fragments of kidney stones. You sort of break them up with ultrasound and then you nudge them into positions in the body where they could sort of be naturally cleared. Huh, there's also, this is the one that I really like. You can have a targeted drug delivery with this. So you can create a sort of micro bubble, load it up with a drug. You can inject it, but then if you want to move it to very specific areas of the body and then burst the bubble using ultrasound to release the medication. And this is particularly useful if you have something like chemotherapy, for instance. So some sort of like drug that has like a really bad toxicity and you want to reduce the side effects that it can interact with other parts of your tissue on the way to the bit that actually wants to interact with. There's also like this idea that you can use these kind of acoustic levitators. I mean, essentially what you have here is like a beam of sound that move stuff. Yeah, and it can move anything made of matter, whereas trying to move things around in a body with like magnets or something would require what you're moving to respond to the magnet. And they're ultrasonic, so they don't bother us. Yeah, just the neighborhood dogs. Yeah. The other thing. So, I mean, in general, moving things around the body, you can also use this for pill-sized cameras. So you swallow a little camera, then you want to move it around the digestive system. For instance, you can use these kind of acoustic beams to move it all around the body. Right. A little microcinematographer could make a movie in my body controlling with sound waves. And sound waves could be a lot harder to jam than like radio waves. In what way? Go on. Well, I mean, like if you want to control something remotely using radio waves, there's going to be some limitations on when you can use those and through what mediums, but perhaps sound can fill in the gaps. Because if you think about it, if you happen to be swallowed by a human and we're sitting inside of their stomach and someone was shouting from outside, you would expect to hear it. Like the sound vibration would still get inside. In fact, actually, you know, you know the whole thing about babies when they're in their mother's stomachs, there's certain frequencies which they hear that end up being really soothing. Yeah. And there's things that they see as well. Like skin is not completely opaque. The growing developing baby in the womb isn't in darkness, especially if the mom's topless and bright sunlight. It's like kind of like red in the womb to the human eye. Yeah. Yeah. And they've done studies where they've projected like using lasers different shapes onto the womb that the baby could see. Yeah. This is of course a baby that's developed enough to have a retina and the babies react to shapes. In fact, they're seen to react to and look at and stare longer at shapes that are similar to a human face. Like it's instinctive. Wow. I'm being serious. Like this pattern right here, they don't seem to care very much about. Okay. That's three dots in a triangle shape. But they will for like twice as long follow and look at an upside down triangle of dots, which is like two two eyes in a mouth. I mean, it's essentially like your your I was thinking in terms of a British plug when I further see this experiment. It's just like hold a British plug in the correct orientation. Baby don't care. Turn it upside down. Baby cares. Really? Of course. I've only seen it for babies that have been born. Yeah. Well, apparently it would work on a prenatal baby. What can they hear? Could they hear this? Like is this is this frequency that this machine's running at? Is it something that like teenagers can hear but not old people? Like the mosquito noise or the yeah. Do you have that in the States where they had a they had a device that was designed to stop teenagers from hanging out in public areas? Yeah. And I experienced one at this show I did or I was like, why is that that buzzing noise out here? And all the guys working there were like, oh, you can hear it. I don't know if I could hear it still. This was years ago. But I was really proud that I could still hear this noise. It's supposed to scare away or not scare away. It was supposed to annoy juvenile delinquents. Well, this thing is about 20,000 hurts. So it's quite possible that young children could hear this. I have a young child in my house. She's like, oh, no, it's them. Well, yeah, let's do an experiment. Salle Verreo. Yeah. And see if they can guess when it's on or off to see if they're getting it. Okay, here's our test subject. He does test subject. Okay, you want you to have a listen and see you tell me when you can hear it. Can you hear that? Yes. Can you hear that? No. Oh, can you hear that? Yeah. Can you? I can't hear that. I can't hear any of these. Wow, super kid. Super kid's 19,000 hurts. She got one up to. I stopped at about 12,000. But there's acoustic levitator that you've got. It's using 20,000 hurts. It's 22, 22,000. Wow. Okay. So it's shaking the air 22,000 times a second, creating waves of compressed air separated by rarified air. And these these waves like collide from the top and bottom. And what's going on? The compressed waves can sink up and create an even more compressed wave. And if a rarified area and a compressed one meet, they just make normal air. Exactly. And somehow creates like a cage of air pressure that can hold very lightweight object. Exactly. Try and put something in that's much larger and it will just flop around all over the place and eventually fall. But if you get something that's the right size and not too heavy so that it doesn't sort of overwhelm the the force that's being exerted by the the surrounding air pressure, then yeah, you can have it successfully levitate. I mean, I always thought levitation was a bit of a science fiction myth, but it turns out actually isn't. Well, yeah, I mean, I got stuck on defining levitation because this isn't levitation. It's it's using force of air pressure to resist gravity. How dare you? It's not touching the ground, Michael. You're you'll be way too strict with your definition. Okay. So then what about is the airplanes levitate? They they're not touching the ground. Shush, shush, shush, shush, now let's go to a break. Okay, let's go to a break. This episode is brought to you by cancer research UK. Radio therapy is over a century old, but it is still changing. Cancer research UK helped lay the foundations of radiotherapy in the early 20th century and has driven progress ever since. Radio therapy remains one of the cornerstones of cancer treatment today. Every year, millions of people worldwide benefit from cancer research UK's work to make it more precise. Scientists are still refining how radiotherapy is delivered, and one example is an experimental treatment called flash radiotherapy, which delivers radiation in fractions of a second up to a thousand times faster than standard radiotherapy. And early studies suggest that speed could make a real difference. Flash radiotherapy may cause up to 50% less damage to healthy cells. But scientists don't yet know why healthy cells seem to be spared, so cancer research UK are working to answer that. Understanding it could be key to reducing side effects in the future. For more information about cancer research UK, their research and breakthroughs, and how you can support them, visit cancerresearchuk.org forward slash the rest is science. This episode is brought to you by our wonderful friends at you, the AI CRM. William here from MPa briefly crossing the Goalhanger network borders. In this AI era, software doesn't just store information, it understands how everything connects. Work now happens across meetings, messages and calls, information is there, but the shape of the volume of it can hide what actually matters. Most CRM's capture activity, but rarely turn it into insight. Atio is the next generation CRM built with AI at its core. It reflects how modern teams operate fast, lead and interconnected. Sink your email and calendar and your up and running in minutes. From there, teams simply ask Atio what they need to know, it's about deals, customers, or what's moving across the pipeline. Powered by universal context, Atio's intelligence layer, it connects what's happening across your meetings, messages and data, and it turns into answers you can actually act upon. With Atio, you are seeing what's gaining momentum, what's stalling, and what needs attention next. In an accelerating world, clarity is the real competitive to match. Try Atio for free at atti.com slash and power. End up appearing. So today we're asking, can you really detect cancer from clues floating around in blood, urine, spit, and tears? Sure answer. Yes, longer answer. How? How? Okay. I mean, this is it, right? Because, okay, cancer doesn't just appear out of nowhere. It leaves these molecular fingerprints in your body. This long before symptoms end up showing. These little fragments of DNA, these proteins, other little molecules that end up floating around your body in your bloodstream, as your cells are dividing as they're growing and as they're dying. Like a sort of internal messaging system, and whether you can tap into it. And the challenge is sensitivity, because you've got a lot of cells that are not cancer. Yeah, I mean, there's a whole load of stuff floating around your body. Well, cancer research UK researchers are building tools sensitive enough to detect these markers. Yeah, these faint little signals and detect them even earlier. And this is different, this is separate from traditional biopsies, right, which kind of go in, it means surgery, it means needles, it means you take tissue samples from a suspected tumor or the surrounding tissue around the tumor. And that is amazing, but it really only gives you a snapshot of one tiny area of the body at that one moment in time. But a liquid biopsy is less intrusive, and it's a liquid that has come in contact and can contain traces from all over the body. Yeah, yeah, like one breath, which is collecting up the molecules that have traveled around your entire body, you know, or urine or blood tests, it's a quiet revolution, right? It is testing the blood and other bodily fluids instead of the tumor without surgery. And the key thing is that because those fragments, because they can come from different parts of the tumor, it means that just a small sample, you can put these clues together and you can get a really full picture of what's going on inside. One thing I think is really cool is that platelets, which like we've all heard about, they're the things that help you heal when you get cut. They block off the blood flow. So the healing can begin platelets really help with this search because they also suck up these molecular traces in the blood. Yeah, these things act like little hovers, right? They're picking up tiny bits of tumor DNA, all those those circulate around the body and concentrating them. And I mean, they can help us unlock overlooked cancer clues. Exactly. And the MRD edge technology is more like an amplifier that can make the really quiet traces loud enough for researchers to find. The whole thing about this liquid biopsies, this isn't just a theory, this is something that's already being child in hospitals to monitor how well cancer treatments are already working. Yeah, the aim is precision knowing exactly when a treatment works, when to switch course and when cancer might return so doctors can always be one step ahead. And cancer research UK, they come into this by connecting the lab work, doing the data science, the clinical trials that make all of this stuff possible. So it's discovery that's happening, that's in motion, it's innovation beginning to make its way towards everyday care. Of course, the goal here is that you can spot cancer early and then tailor every single decision around the individual person based on what's going on in their body at that moment in time. That's right, doctors can detect and be aware of the smallest changes so that they can adjust treatment in real time. Yeah, rather than having long stretches between biopsies, for example. And this shifts medicine from being just reaction to prediction as well instead of waiting for symptoms to arrive, you can get one step ahead. And the same science that spots cancers earlier could become part of routine checkups. Yeah, much less invasive, much more predictive. I mean, you can imagine a future where you go and have a blood test and it is as routine as, I don't know, getting your car in for a service. Only this blood test is monitoring everything that's going on in your body and could potentially save your life. So cancer research UK's researchers are bringing the future closer. They're turning detection into protection. And what is remarkable is just how quickly this field is moving. You are getting discovery beginning to shift from the lab into hospitals. And when we learn to read the body's signals, we can get ahead of cancer. We can have the best shot for more information about cancer research UK, their research breakthroughs and how you can help them visit cancerresearchuk.org forward slash rest is science. All right, we're back and we're going to answer some questions from you. I want to start with this great question from Neil who asked, will a person ever swim faster than a shark? No, next question. Wait a second. This is one of those questions that suffers from the problem of being a bit too broad. Like, what do you mean by a shark? Yeah, like there are sharks that swim really slowly. The Greenland shark only swims at about one mile per hour. That's about three, four meters per second. That's extremely slow. It's not the one that's also like 400 years old. Yeah, yeah. And so I could out swim one of them, but I can't outlive them. Maybe it's a balancing scale. And the fastest human speed is like almost two and a half meters per second. How does that convert to more than a about five and a half miles per hour? Okay, that's pretty good. You could definitely outrun a Greenland. Is that we thought without fins? That's without fins. That's just using a flesh your mother gave you. What I will say is I can definitely not swim that fast. Yeah, that's a sort of Michael Phelps territory. No, it definitely is like a very unique speed to be traveling at. I also want to know how motivated the shark is. So I sort of feel like even fast sharks, whatever the fastest shark might be. Where are you working the fastest shark is? Like, I mean, not a hammerhead. They are aerodynamically useless. I mean, Google says the fastest shark is the short fin meco, which can travel at 31 to 46 miles per hour in the water. Well, well, this is a whole jumble of units. We've got to go on here. That's a whole jumble. How many fathoms per day? Not per month. Look, the point what I love about the question, though, is that it's framed by asking will a person ever swim faster than a shark as though human swim speed is something that is changing and it's getting better and better. And in some ways, it is. There's also belies that kind of like that modern sensibility that like things are just going to get better and stronger and records keep getting broken. And in some ways, it is true. Like, we do learn more about nutrition and swimming techniques and also swimming technologies like fins and swimsuits. I think there was some swimsuits that were allowed in Beijing at the Olympics that are no longer allowed, but because they were allowed for that one Olympics event, a bunch of records were set. Yeah. And so we're at the point where the limits of human bodies are now being augmented and we're going beyond it. Because I think that's the thing actually, particularly about swimming, is that you have to wear a swimsuit, right? You can't do nudy swimming. That would just not be okay. And so you have to have some kind of, you know, designed object on your body. What do you mean, you can't swim naked? I mean, you can if you want to, but maybe not in competition in the Olympics. Right. Right. Maybe not a two and a half meters per second, Michael. That's what I'm saying. Right. But those particular swimsuits, they had a couple of design features. So one was this, because what you really want to do is you want to basically have your your butt higher in the water, like as high in the water as you can. So they had like some elements of buoyancy in them. They also along the sort of skin of the swimsuit, they had like, sort of microscopic design, which allowed the water to slip over it much easier so that you didn't get this sort of any resistance or drag on the surface. And then I think also they were basically like spanks. They were basically like four sizes too small for the human that was wearing them to make them as streamlined as possible, sort of minimise their surface area. That's an eating okay. So all of those things, you know, those things are, oh, actually one other thing about swimming, in fact, you know, this idea that humans can swim faster as time goes on. When I was a kid, swimming essence, they would say that you have a flat palm and that your fingers are stuck together. But actually, now that I have a PhD in fluid dynamics, Michael, I know that that is not true. I know that that is not the best way to swim. Because in fact, actually, if instead of having your hand flat, you have it sort of cupped. But also, if your fingers are slightly further apart, what happens is that for studies, you're just basing more water by having your hand curved. So basically, if you have your hand in like a natural relaxed position, what happens is you get these little eddies that appear, this turbulence that appears between your fingers. There are, you know, if you get it at the right distance, that are impenetrable to water going through. So you effectively increase the size of your hand by having your fingers slightly apart. Basically, you want to think of your hand as these big scoops going through the water. Right. And those eddy currents are almost like webbing, made up water that stops water from going through. That's really cool. So maybe, maybe science will make people swim faster. I know. Watch out, Mako Shark. Thanks for the question, Neil. You want to take Ellie's question? Yeah, go on. Ellie asks, if you had to invent a completely useless yet scientifically fascinating machine, what would do it? And what basic principle of physics or chemistry would it exploit? Okay, I've had this idea for a long time. I want to build a clock that uses a titration process to tell time. So what you've got in my mind, you've got like a beaker with some kind of solution in it and you're dripping another chemical into it at a regular interval, like one drop per second. And you do this all day. All right. And the more of the above chemical falls into the one below, the more the color changes. So for example, maybe it's becoming more and more red throughout the day. And then on the clock, there's a gradient from clear to red and you just turn it until it matches the color of the beaker. And that happens to be the time that it is. So to check the time, you just go, let's look at this, how red is it and you move the dial until the red's match and you go, oh, wow, guys, it's afternoon now. I like that so much. I've actually wanted something like an hourglass for a really long time that lasts much longer than an hour. Right? I wanted one. There's some things that you want to do every couple of weeks. Right? Every couple of weeks, maybe you want to like, water your plants, for example. And what I really wanted is a physical device that you can turn over, leave it and then know when two weeks is up. Unfortunately, if you use sand or something, they end up being so gigantic that they're completely in practice, like the size of a room. I know. I know. Well, there's a there's an hourglass in Japan that goes for an entire year. Is there how big of it? It's really big and it's supported way up on these just giant metal truss and on New Year's Eve. Every year, they turn it over and it's beautiful and it's one of my dreams to go and visit it. Oh, that's incredible. But this idea of having a liquid that drops, I like this a lot because there's the, there's that experiment, the pitch-druff experiment, you know about this, I imagine. Yeah, the longest running experiment. Since 1927. So this is, oh, so it's going to be hitting its 100 year anniversary in a couple years. That'll be a special moment. Should we work out a way to get the rest of science to go and visit for its 100 year anniversary? Yeah, we should do a special celebratory episode there as we watch it. For those who don't know, the pitch drop is an experiment looking at the viscosity of pitch, a material that is so, so not flowy, that it pours out of the funnel that it's in, like, well, I mean, so slowly that it's been almost a hundred years and it's still coming out. Yeah, I think there's only been, it's like tar, right? It's like the kind of thing that you would use to waterproof your roof, like that kind of thing. There's about a one drop every decade or so. I think the person online camera, I think the person like a live feed. Yeah, the feed, okay, so the experiment uses pitch that is a hundred billion times more viscous than water. Wow, that's incredible. Absolutely incredible. Can I just read you? I want to read, this is so fascinating. In 1927, Professor Parnell heated a sample of pitch and poured it into a glass funnel with a sealed stem. He allowed the pitch to cool and settle for three years. And then in 1930, he cut the funnel's stem. And since then, the pitch has slowly dripped out of the funnel. It took eight years for the first drop to fall and more than 40 years for another five to follow. My gosh. Harnel though, he never got to see it, even though he was in the same building for decades. And when he died, I think no one had ever, you sort of know that it's happened, but you come back in and you're like, damn it, I missed the drop. And you got to wait another 10 years. Someone who took over the experiment after Thomas Parnell was like completely obsessed with it. So was waiting like 40 years to set up loads of cameras, sometimes just sleep near the apparatus when he thought that a pitch was imminent. Right. In 1927, apparently, he left the lab for a few minutes and then the drop fell. And then in 1988, the next time, it fell again, but the camera had jammed. And then in 2000, he sat up a webcam and the webcam crashed right before the drop. He is so hard. He's career trying to see a single drop in the jar and yeah, died without having seen it. What a life. I feel like you could do a pitch drop experiment timer at home and you would just set a knob to the temperature for the speed that you wanted and you could set it for a fast speed or like remind me in six months. Yeah. Let's invent that. I think that's something that's done. I'm going to write it down. You could do, you could definitely do that. I'd like a two-week pitch drop timer, please. On that note, I'm going to go and water my plants and try and levitate some household items acoustically. Oh, sounds like a fun time. Very good. We'll see you next time. Yeah, we'll see you next time.