Revealing 5 Secret Magic Tricks With Science)

Today we're gonna be teaching you five magic tricks you can do yourself at home to impress your friends Actually even better than magic tricks because they use science like a levitating orb. Oh, Emma needs her ladle back These are tricks that I've never seen before and they're gonna be performed by our former middle school science teacher and even former Middle school magician science Bob Flugfelder. Here we go. Trick number one involved Nothing more than a metal ring Bob's finger and some uncomfortable prolonged eye contact. Ready? Yeah What the heck was that? There's no hinge on here. Let me just try it one two Okay, maybe there's So this is a trick to use this persistence of vision. We have build box toys that utilize persistence of vision That's true the coin spinner you spin the coin and it looks like Saturn has rings But really it's just a circle on one side and rings on the other I'm literally just pushing my finger. So at one point my pinky looks like that, but you don't see that you do it Just right one two three Wow persistence of vision relies on the fact that your eyes can only send a limited number of visual pictures to the brain each second because The pinky bend happens so fast There's a good chance your eyes never sent that part of the trick to your brain Which means your brain has to assume the ring just went through your finger, even though it knows that's really not possible And that's how you can pull off this mind-blowing trick like I do Huh? Nate's laughing After maybe a bit more practice Trick number two Bob threw down not one not two But three cups and then filled just one of them with water at which point he gave me a challenge I will scramble up the cup try to remember which one has the water in it easy This one here we go and mixing and mixing and mixing Mixing and mixing. Okay, one two, or three easy one. Let's see if you are right You are hopefully you got that at home that means we're going to the next level it's in this center one Okay. Yeah, there we go. And there we go. There we go. Mixing mixing best do that One two three feel like that was even easier Bob number two. Thank you very much if you're right You are one more time one more time. Okay, it's in this one. Okay going going going going All right, one two or three Let's see if you're right One or three Are you right? No, so here's the weird thing. There never was any water believe it or not The science behind this is the same science that's used in diapers Whoa, you need to get your hands on some diapers go and say hey, can I borrow a diaper? Yeah, that's not weird You immediately see all this white powder coming out of that and this white powder turns out to be a liquid absorbing polymer Which explains why it's in diapers so Bob grabbed some clear cups to show me the secret was putting a little bit of the polymer into just one of the cups and Then after transferring water between the two empty cups poured it into the polymer cup after which that water-absorbing polymer starts going to work And after just a little bit of time no water in there. No water in that one and no water in that one Whoa? That is wild and magic. Oh And after a quick cleanup of the mess Bob's diaper left We got to trick number three which involved a big bottle of water Containing a tiny packet of ketchup bring your hand near it and it will drop Oh, it takes the warmth from your hand and it will change the density. There it is Bob That's not a valid explanation. Are you saying I was lying? Yes, I'm saying you were lying magicians lie a lot It has nothing to do with the heat from your hand totally made that up What it does have to do with is water pressure So if I want this to sink all I got to do is actually squeeze this almost imperceivable squeeze We'll make that go down. This is called the Cartesian diver water can't compress But the little air bubble inside of the ketchup can compress So when I squeeze this that changes the density and that causes it to sink until I release it So that means the combination of the ketchup the packet and that air bubble is really close to the density of water It's almost neutrally buoyant, right? Almost it turns out there's a secret ingredient to this trick because if you put the ketchup packet in regular water You can see how this one's not floating. Yeah, it's not really floating So you just add some salt and shake it up. Yeah, it's gonna increase the density of the water now It's definitely now it's floating. See there it goes Wow Because salt water is denser than regular water ketchup will float on it as long as the air bubble stays big But when you squeeze the bottle water pressure pushes all those little molecules of air in the bubble closer together And that slight change in volume increases the density of the ketchup packet compared to the water around it and just like magic the packet sinks Now that Bob had busted out the force it was time for trick number four where he was gonna show off further Jedi powers using A balloon a ring cut from a plastic bag his own hair What this is doing is putting a negative charge on and it's making your hair look cool And then if all goes well You don't need to be a Jedi to pull this off Thanks to electrons all materials in the world contain tiny particles called electrons Which have a negative charge certain materials like plastic bags and wiffle ball bats are able to pick up negative Charges from other materials like your hair which gives away the charge easily, but it turns out that negative charges Absolutely don't like hanging out together And so they'll repel away from each other just like negative sides of a magnet repel each other And so if one of those objects with the negative charges light enough like say a ring cut from a plastic bag the repelling force Is strong enough relative to gravity and push it away and make it float. Oh, it's like a UFO Can I try yeah, I'm gonna use your hair Sure No way I can move it up and down I go to the left I go forward I come back I am an actual wizard that or its electrons repelling each other and feel free to get creative with the shapes you cut out All right jellyfish we're going for a walk After taking a brief intermission so Bob could tend to my jellyfish sting We moved on to the next trick which only involves a pen and a water bottle. This doesn't always work I'm gonna try it without the cap this time. See if it works better. All right, here we go. One, two, three Whoa Okay, if you squeeze it that must be it you squeeze it wait nothing's happening So this was a brain trick, let's talk a little bit about light diffraction This works because the sides are round. Hmm And so this acts as a lens and so when we tip it over I can't see I can't see it that pen Wow at all then we bring the pen up I can turn it your eyes are now on the pen, right? You're not even thinking about one being behind now I take advantage of light diffraction the other way so I can slip this away and all of your attention Wow on that But let's see if the final trick could beat it which started promisingly with another balloon Now if I can put this very pointy skewer through this balloon without popping it. Will you buy me an ice cream? I'll buy you 12 ice creams Bob. Excellent. All right, here we go Whoa? What? There we go, what the heck maybe I'll go chocolate What the heck that feels like it shouldn't be possible true because your brain says hey if there's a hole in something It's probably leaking. Yeah, but now we're using once again the power of the polymer. Can I make a guess? I noticed you didn't fully fill this up. Correct So it's like the rubbers a little bit thicker. Mm-hmm, and it almost creates a seal You also poked it at the bottom where I know the rubbers thicker Yeah, and then if you don't want to spoil it, you can just take it out. There you go They never have a chance to check it out Bob showed me this trick can also be performed with a big freezer bag and an absolute rainbows worth of colored pencils Pick whatever spot you want. Really? Relatively fast and confident. I could be fast and confident Bob. Okay The way you step to the side though, that was not a confident sidestep. I'm not moving. All right, here we go three two one Spoiler alert this was fun That's trippy It's cuz your brain thinks if something is full of water and it has a hole in it supposed to leak the polymers are sealing That off in fact. Oh, no, maybe it was too fun. Oh No Alright, so that means I moved a little on that one for our viewers See how many of these yeah, you can get in a single bag without that tag us at crunch labs winner gets 12 ice creams All right. Well, there's a bunch of science tricks that are better than magic And now I have a final science trick of my own Back to work Bob. Yes, sir