My flashbacks to recursion trigger flashbacks to recursion. I hope. Because true recursion has a halting state; otherwise, it’s just an infinite loop. Such is life. There is no way to know. Thanks, Turing.
2:36 Actually, there’re also similar startup groups that have developed simplified cardboard microscopes for the detection of the parasite, I heard. Dunno how successful they were in the end tho
Yeah there is a video were a dude talks about this with bill Gates. It's a kit they use in developing countries it has a little lense that you attach to your smartphone to look at the blood
It’s not friction that causes heating on re-entry! Look, you guys could do a whole SciShow episode on adiabatic heating (and cooling). I think it’s a fascinating concept that is pretty simple to understand, but it is also unfamiliar to most people. See “diesel” and “fire pistons” for starting fires. Fire pistons are a really cool way to demonstrate how a diesel works, by the way. It’s one of those, “No way! I can’t believe that works!” sort of demonstrations. To be fair, there is some heat caused by friction, but it is a tiny amount compared to adiabatic heating (I think it was an order of magnitude less, but it’s been several decades since college for me).
Oh wow. I'd COMPLETELY forgotten those poppers existed. Seeing this made me remember a long-ago birthday at my grandmother's, though, where I got a bunch of these. Now I kind of want one for nostalgia's sake (and also it's my birthday today, so it fits. lol)
hank i love you so much please never stop inspiring more kids. i might not be going down the science pathway myself but it was defiantly my first choice and you where my inspiration.
In 3 the ring game it is said in the video, that the heating when re-entering the atmosphere is due to friction with air molecules. Actually friction has nothing to do with it, but it is the compression of the air in front of the object. I think there is even a SciShow video out there addressing that ;)
humans are terrifying. Give us a problem and time and we'll do the impossible as close as we can. We may not be able to break the laws of physics but give us enough time and we'll bend it into a knot.
I create engine animations for fun and wikipedia. When I find an unusual engine as desk toy online for sale, the seller gets a sell, I get a toy and everyone interested will find the animation later on wikipedia - usually also working to improve the text(s) and sources of the article. Only one issue: A few years latter, it gets hard to find sources that where not affected by the improved text and the animation on wikipedia...
In 1976 while watching my niece who was a toddler, play with her toys, I noticed the slinky-bodied worm toy was detached in the front. Only the rear of the worm and the slinky body was there. I picked it up to see if maybe I could reattach the head part and through the hollow rear part on the slinky, it started making sounds like in War of The Worlds or other sci-fi. I soon obtained a regular slinky and experimented with what little I had to work with to amplify the sound by hanging the one end of the slinky from a handheld microphone the other end rested about 5 rings of the slinky on the floor. Tapping with a pencil produced some great sounds and even better when recorded and slowed down. Also found you can hear the slinky well by just sliding it onto an empty shoebox. Not sure if it fits the discussion of this video but it did remind me of the past. I still tinker with things and yes, I have about 5 slinkys on hand at all times. : )
No. With a capsue making a ballistic re-entry, you have air molecules minding their own business at ambient temperature, when suddenly a great lump of metal tuns up atvery high speed . This imparts energy to the air molecules just hit, raising their temperature. Because they can't move out of the way fast enough, they get rammed into the next bunch of air molecules, which also get heated and so on. Sp now, you have a layer of air under the capsule that is much denser than the air otherwise is at that altitude, and a lot hotter. Eventually tthe pressure reaches an equilibrium, so some of that compressed air gets out from under the capsule sideways, but it's so hot that its a plasma , rather than a gas. And of course, the energy that goes into the air, heating it up, is energy lost by the capsule, so it slows down. Friction is an effect caused by one substance dragging past another - like rubbing woodwith sandpaper, it'll get warm. Whereas compressive heating is what hapens when you blow a bicycle tyre up. Different processes. Ihope that helps! :-)
If I remember correctly friction barely heats things upon reentry. Its boyles law. The pressure of the air molecules compressing on the surface of the craft is the main source of the heat. Friction does add to it but not as much as the pressure temperature relationship.
So all them toys I played with a kid, I could have patented as scientific and space-exploration devices had I known, rather than drooling on them and shoving them in my gob... :P
In the 70’s carter carburetor in St. Louis used metal jumping disc technology to make a hot idle compensator with no moving parts. It fit in a slot with a hole on each side. When the disc was cold it bent one way blocking one hole. When things warmed up, the disc popped the other way blocking the other, different sized hole. It began when a draftsman was playing with a jumping disc on his desk during lunch. Really.
I repurpose toys regularly. Right now there are two toy pastries made of squishy foam on either side of my laundry room. They keep the washer and dryer doors from hitting the walls - SILENTLY.
Correction on re-entry heating, it is mostly radiative heating. The air is compressed to an extreme degree in front of the spacecraft and reaches temperatures comparable to that of the surface of the sun. The infrared light from the resulting plasma does most of the heating.
I like that many concept inventions give slight hints of potential military use. Because we all know if you have a project and you want to get funded that's how you do it.
Now I forget what the order of Transcendence went. But that button spinner was supposedly inspired by early fire drills (wooden sticks that spin back and forth, and make fire), and supposedly went on to inspire early wood lathes.
Tops are one of the first toy inventions discovered in archeological dig sites and will probably be the toy to launch stuff into space with zero rocket fuel.
I will never understand UA-cam metrics, 6.68M Subs, only 110K views, and just 6.5K likes lol This is amazing, this channel deserves more active userbase xD. (to be fair its barely 20 hours since upload)
In case of reentry heat not muchheat comes from friction actually, but from compressing air. You also missed entire purpose and point of heat shield. Inflatable heat shield has nothing to do with planets with thinner atmosphere, there they still use normal heat shield. Point of it is to be compact and protect elements which are not that good at surviving reentry (like engines from first stage aka Vulcan) as capsules for example.
The perfect follow up to reviewing any child's toy: "Look Daddy what Mommy got me for my birthday, a My Little Pony Friendship Castle !!" - "That's really nice dear, it's so fun and cute and colorful !! ... But hear me out, what if it was several meters wide and hurtling through the atmosphere at Mach 10 or more ?!?"
Yo Hank, Joe Hanson from It’s Okay to be Smart says “Butt is not legs.” At the end of his latest video. How do you intend to deal with this direct diss?🧐
I'm always at a constant equilibrium with human ingenuity. On one hand there are always innovations like this that boggle the mind. Those eureka moments that make normal people wonder how that leap was made. On the other hand we still cling to antiquated ideas that have no place in our world and hinder is from pushing forward. It's always so frustrating.
I'm pretty sure the heating during reentry is not caused by friction ua-cam.com/video/w7n8PWGtzbA/v-deo.html It's caused by transfer of heat from the air compressed as it passes over the heat shield.
Man I thought this was going to be on Serious Leisure which is actually a very interesting topic if anyone is interested. Searching for Stebbins Serious Leisure Perspective should bring up either the original paper or the website that can explain the topic. I actually ended up writing my senior thesis on serious leisure and think it would be awesome to see a video on it.
How about "innovations that became toys"? The ballpools in so many macdonalds' around the world started off as a toy for people with severe mobility impairment, who with the little movements they could do could feel their bodies moving, because each movement had an outsized impact in the ball pool. And since they're balls, there's always space for air, so no one is going to suffocate, and since they're plastic they are resistant and continue to hold their shape.
Not exactly the same thing, but you can use actual toys for some ingenious DIY "hacks". The lip part from rubber balloons can be used as an O ring type gasket (the balloon itself can also be wrapped around a pipe fitting to seal minor leaks until you're able to get a proper replacement). Play dough can be used as filler putty in a variety of household repairs, it's actually better than solid fillers in places you have to reopen periodically as it never fully hardens and matching colors is far easier than mixing pigments into a dedicated removable putty. Drawing chalk is literally the same thing as marking chalk, just far cheaper and more colorful. And these are just a few examples of how thinking outside the box can save you a lot of money, time and headaches.
Frankly, I'm not sure the Tower of Hanoi was that similar to the spacecraft; Other than including a lot of rings/toroids, they're not that similar, but isn't a key part of the Tower of Hanoi that you can rearrange the rings? Expanding or contracting is SORT of similar, but eh.... Anyway, neat video! Thanks for uploading!
Absolutely living for the disaster that is Hank's outfit. An aesthetic
I was thinking it was the exact opposite of anaesthetic…
@@oldvlognewtricks lol
Makes me want to go thrift shopping and live my best life
Looked like a drop bear.
The gear system in the Falkirk Wheel that keeps the boat docks upright as the wheel rotates, was originally modelled with the designer's kid's Lego.
This reminded me how many children's toys are are just physics doing strange things. Makes sense you could solve some interesting problems with them
Towers of Hanoi giving all the CS majors flashbacks to learning recursion.
Exactly! It's not ring toy for kids, it's a Towers of Hanoi problem.
Agreed
I learned recursion to solve factorials. return ( N == 0 ) ? 1 : fact( N -1 ) * N;
You mean Mass Effect 1 PTSD
My flashbacks to recursion trigger flashbacks to recursion. I hope. Because true recursion has a halting state; otherwise, it’s just an infinite loop. Such is life. There is no way to know. Thanks, Turing.
2:36 Actually, there’re also similar startup groups that have developed simplified cardboard microscopes for the detection of the parasite, I heard. Dunno how successful they were in the end tho
Yeah there is a video were a dude talks about this with bill Gates. It's a kit they use in developing countries it has a little lense that you attach to your smartphone to look at the blood
It’s not friction that causes heating on re-entry!
Look, you guys could do a whole SciShow episode on adiabatic heating (and cooling). I think it’s a fascinating concept that is pretty simple to understand, but it is also unfamiliar to most people. See “diesel” and “fire pistons” for starting fires. Fire pistons are a really cool way to demonstrate how a diesel works, by the way. It’s one of those, “No way! I can’t believe that works!” sort of demonstrations.
To be fair, there is some heat caused by friction, but it is a tiny amount compared to adiabatic heating (I think it was an order of magnitude less, but it’s been several decades since college for me).
Yo they did it again, cant remember which episode previous.
You're kidding. There's THAT much pressure????
So, then does that mean the top of the spacecraft gets cold on reentry?
I made my comment before i read yours but im glad someone else caught it.
I literally screamed at my computer screen.
Oh wow. I'd COMPLETELY forgotten those poppers existed. Seeing this made me remember a long-ago birthday at my grandmother's, though, where I got a bunch of these. Now I kind of want one for nostalgia's sake (and also it's my birthday today, so it fits. lol)
probably a bin of them at a local dollar store.
Happy birthday broski, make all of ur nostalgia dreams come true!!🎉🌟
happy birthday
Happy 🎂 birthday 🎉
Happy birthday! 🥳🎁🎂🎈
hank i love you so much please never stop inspiring more kids. i might not be going down the science pathway myself but it was defiantly my first choice and you where my inspiration.
No children: you won't enjoy it on as many levels as I do - Professor Frink
In 3 the ring game it is said in the video, that the heating when re-entering the atmosphere is due to friction with air molecules. Actually friction has nothing to do with it, but it is the compression of the air in front of the object. I think there is even a SciShow video out there addressing that ;)
humans are terrifying. Give us a problem and time and we'll do the impossible as close as we can. We may not be able to break the laws of physics but give us enough time and we'll bend it into a knot.
inspiring
Like Batman. lol
Just from Knowledge we literally are.
more than a knot lol This is why i say "physics are our b*tch" XD we have the power to abuse the laws of physics so much they practically bend for us.
hang on, you said this is impossible? because here it is happening and I don't know how...YET
Be careful with those actuators. Once you pop, you can't stop!
I create engine animations for fun and wikipedia. When I find an unusual engine as desk toy online for sale, the seller gets a sell, I get a toy and everyone interested will find the animation later on wikipedia - usually also working to improve the text(s) and sources of the article. Only one issue: A few years latter, it gets hard to find sources that where not affected by the improved text and the animation on wikipedia...
I had those wood trains at the start of the video as a kid!
They are awesome.
In 1976 while watching my niece who was a toddler, play with her toys, I noticed the slinky-bodied worm toy was detached in the front. Only the rear of the worm and the slinky body was there. I picked it up to see if maybe I could reattach the head part and through the hollow rear part on the slinky, it started making sounds like in War of The Worlds or other sci-fi. I soon obtained a regular slinky and experimented with what little I had to work with to amplify the sound by hanging the one end of the slinky from a handheld microphone the other end rested about 5 rings of the slinky on the floor. Tapping with a pencil produced some great sounds and even better when recorded and slowed down. Also found you can hear the slinky well by just sliding it onto an empty shoebox. Not sure if it fits the discussion of this video but it did remind me of the past. I still tinker with things and yes, I have about 5 slinkys on hand at all times. : )
NASA engineer looking at a ring toy: My god that's exactly what I've been looking for.
Hank totally rocking the fashion in this ep!
re-entry heating of space capsules is not due to friction; but to compressive heating.. i'm really surprised that you got that wrong!
Aren't compressive forces still getting heat from friction? Or do I not understand
No. With a capsue making a ballistic re-entry, you have air molecules minding their own business at ambient temperature, when suddenly a great lump of metal tuns up atvery high speed . This imparts energy to the air molecules just hit, raising their temperature. Because they can't move out of the way fast enough, they get rammed into the next bunch of air molecules, which also get heated and so on.
Sp now, you have a layer of air under the capsule that is much denser than the air otherwise is at that altitude, and a lot hotter. Eventually tthe pressure reaches an equilibrium, so some of that compressed air gets out from under the capsule sideways, but it's so hot that its a plasma , rather than a gas.
And of course, the energy that goes into the air, heating it up, is energy lost by the capsule, so it slows down.
Friction is an effect caused by one substance dragging past another - like rubbing woodwith sandpaper, it'll get warm. Whereas compressive heating is what hapens when you blow a bicycle tyre up. Different processes. Ihope that helps! :-)
@@esmenhamaire6398 thank you for the knowledge
2:30 And Hank did NOT comment on the pun in the shirt! For Shame! For Shame!
If I remember correctly friction barely heats things upon reentry. Its boyles law. The pressure of the air molecules compressing on the surface of the craft is the main source of the heat. Friction does add to it but not as much as the pressure temperature relationship.
So spinning something can be a fun toy and/or save your life.
They tried spinning, that's a good trick.
Toymakers looking forward for a new wave of royalties soon. Heads up: Moon Shoes, Skip-It, Slinky, Sky Dancers, Magic Mitts, Pogo Balls, KNex, Koosh balls, Lite Brites, Kerplunk, Shape-O balls, Pogs, View-Masters, Etch-a-Sketch, Whee-los, Devil sticks, Pinscreens, Silly Putty, Mirascope and Yo-yos.
5:38
This is the biggest heat shield in Kerbal Space Program. Really good for atmospheric entry on Duna/Mars.
Thank you so much for uploading this video. It is helping me get through the pandemic!
I just want to say the TV show Zeta Gundam Had the idea of inflateable heat shields in the early 80's.
I can't hear Hank over the sound of his mismatched layered shirts LOL
Ring toys are classic. Always have been, always will be.
So all them toys I played with a kid, I could have patented as scientific and space-exploration devices had I known, rather than drooling on them and shoving them in my gob... :P
Love watching these videos
In the 70’s carter carburetor in St. Louis used metal jumping disc technology to make a hot idle compensator with no moving parts. It fit in a slot with a hole on each side. When the disc was cold it bent one way blocking one hole. When things warmed up, the disc popped the other way blocking the other, different sized hole. It began when a draftsman was playing with a jumping disc on his desk during lunch. Really.
I wonder what Scientific Breakthroughs the Bionicles will inspire in the future 🤔
The launchers used for something?
Modular humanoid robots with plug and play parts?
Bionicles are themselves already a scientific breakthrough.
Medabots?
Cool video, I also love the new intro and Hank's weird shirt combo!
yeah😂
I want to know more about the bear on the shirt!
@@Vasharan Not sure what the bear is holding but it doesn't appear to be what one would expect a cartoon bear to be holding...
I repurpose toys regularly. Right now there are two toy pastries made of squishy foam on either side of my laundry room. They keep the washer and dryer doors from hitting the walls - SILENTLY.
The sudden change in logo is freaking me out.
Great video thanks!
Last video with the old (current?) logo! 😯
The HIAD reminds me of the Ballute system from Gundam. Neat!
The first photo of the HIAD (5:38) made me think of a yokai called kasa-obake or (in Nioh anyway) a karakasa - an umbrella monster!
I love that I got the towers of hanoi reference from the thumbnail
Incredible!
keep killing it with these outfits hank, this one mad me so happy
Those clear polystyrene packs baked stuff comes in etc work like shrinkydinks.
Correction on re-entry heating, it is mostly radiative heating. The air is compressed to an extreme degree in front of the spacecraft and reaches temperatures comparable to that of the surface of the sun. The infrared light from the resulting plasma does most of the heating.
you're the man, mr green.
I like that many concept inventions give slight hints of potential military use. Because we all know if you have a project and you want to get funded that's how you do it.
Spinning top was also required in developing theories of quantum mechanics. Like the concept of angular momentum and spin
The shrinking metal thing is insanely cool
I really miss the sci show quiz show so much . Please bring it back.
Now I forget what the order of Transcendence went. But that button spinner was supposedly inspired by early fire drills (wooden sticks that spin back and forth, and make fire), and supposedly went on to inspire early wood lathes.
The creativity of humans continuously blows my mind.
hank is the best host on this show.
Tops are one of the first toy inventions discovered in archeological dig sites and will probably be the toy to launch stuff into space with zero rocket fuel.
I will never understand UA-cam metrics, 6.68M Subs, only 110K views, and just 6.5K likes lol
This is amazing, this channel deserves more active userbase xD.
(to be fair its barely 20 hours since upload)
Don't forget NASA also used toys to build a model of Hubble telescope's antenna to figure out why it's rotation is not behaving as expected.
2:32 That T-shirt though...
That stacking ring toy looks like spiral dynamics
In case of reentry heat not muchheat comes from friction actually, but from compressing air.
You also missed entire purpose and point of heat shield.
Inflatable heat shield has nothing to do with planets with thinner atmosphere, there they still use normal heat shield. Point of it is to be compact and protect elements which are not that good at surviving reentry (like engines from first stage aka Vulcan) as capsules for example.
You can aerobrake spacecraft into a planetary orbit by skimming them through the upper layers of an atmosphere with a shield to generate drag.
I ♡♡♡ your t-shirt.
🐻
I went to school with a girl who designed one of the first salad spinner centrifuges, I thought it was super cool!!
This was fantastic.
The perfect follow up to reviewing any child's toy: "Look Daddy what Mommy got me for my birthday, a My Little Pony Friendship Castle !!" - "That's really nice dear, it's so fun and cute and colorful !! ... But hear me out, what if it was several meters wide and hurtling through the atmosphere at Mach 10 or more ?!?"
Double rainboom?
Never heard of this popper toy. Where are these popular?
the name we use for button whirligig on my island in the eastern caribbean is "voong-voong"
Yo Hank, Joe Hanson from It’s Okay to be Smart says “Butt is not legs.” At the end of his latest video. How do you intend to deal with this direct diss?🧐
the kind of persnickety argument about exact definitions I am here for
Nah, I came here for some diss tracks.
Joe conflates the butt with the anus, they are clearly not the same
+++
"Wear This Shirt Periodically", Ha Ha, nice shirt.
The first one is low key dystopian
cool and interesting topic
POPPERS WERE MY CHILDHOOD
I'm always at a constant equilibrium with human ingenuity. On one hand there are always innovations like this that boggle the mind. Those eureka moments that make normal people wonder how that leap was made. On the other hand we still cling to antiquated ideas that have no place in our world and hinder is from pushing forward. It's always so frustrating.
love your outfit Hank!
I'm pretty sure the heating during reentry is not caused by friction ua-cam.com/video/w7n8PWGtzbA/v-deo.html It's caused by transfer of heat from the air compressed as it passes over the heat shield.
No I do NOT remember Shrinky Dinks but they look awesome!! and I need to try them now!
the HIAD is also in KSP.
Love the outfit Hank. Very dad on vacation
Hank, that is a fantastic outfit!
Man I thought this was going to be on Serious Leisure which is actually a very interesting topic if anyone is interested. Searching for Stebbins Serious Leisure Perspective should bring up either the original paper or the website that can explain the topic. I actually ended up writing my senior thesis on serious leisure and think it would be awesome to see a video on it.
Mathematics has received an infinite amount of inspiration from "simple" toys & games like these.
okay but where can I buy that "I wear this shirt periodically" shirt bc I need that in my life immediately
anybody else want to know what inspired him to combo those 2 shirts together
2:28 honestly looks like a pic from the Onion lmao
Science makes me happy.
i swear i watched a video where they used a glass bead to allow the parasites to be viewed
I wonder sometimes if we could use the examples given by those rope puzzles to "untie" laws of physics on matter in the future.
John, I love your t-shirt. Where can I get one?
Is it sad that I knew the make and model of the centrifuge at 0:56?
FYI its and Elmi CM-6MT
Well this is nice
How about "innovations that became toys"? The ballpools in so many macdonalds' around the world started off as a toy for people with severe mobility impairment, who with the little movements they could do could feel their bodies moving, because each movement had an outsized impact in the ball pool. And since they're balls, there's always space for air, so no one is going to suffocate, and since they're plastic they are resistant and continue to hold their shape.
Where can i get your shirt?!? I only buy like 1 or 2 a year and that one's awesome.
Not exactly the same thing, but you can use actual toys for some ingenious DIY "hacks". The lip part from rubber balloons can be used as an O ring type gasket (the balloon itself can also be wrapped around a pipe fitting to seal minor leaks until you're able to get a proper replacement). Play dough can be used as filler putty in a variety of household repairs, it's actually better than solid fillers in places you have to reopen periodically as it never fully hardens and matching colors is far easier than mixing pigments into a dedicated removable putty. Drawing chalk is literally the same thing as marking chalk, just far cheaper and more colorful. And these are just a few examples of how thinking outside the box can save you a lot of money, time and headaches.
So where can we buy those toys?
Ah, flying saucers in space. :)
A lot of old toys used a lot of very specific physics to do interesting things that are seemingly impossible otherwise origami for example
Here I was thinking the "ring toy" in the thumbnail would be related to the "Tower of Hanoi" in mathematics
Video: Says it's 4 minutes long on my homescreen
Also Video: 9 minutes when i click somehow..??
Awesome. And of course how the Etch-A-Scetch became an Ipad. Kidding.
Ooh so the inflatable heat shields from ksp are being developed in real life. Cool.
Frankly, I'm not sure the Tower of Hanoi was that similar to the spacecraft; Other than including a lot of rings/toroids, they're not that similar, but isn't a key part of the Tower of Hanoi that you can rearrange the rings? Expanding or contracting is SORT of similar, but eh....
Anyway, neat video! Thanks for uploading!
Aww, you never mentioned Einthoven's bow and arrow! (Look it up!)
It’s been four minutes since this was posted and there’s already 400 views
7 minutes with almost 900 views
There's 6.6million subs
How far into the video does UA-cam count it as a view? Keep in mind that videos can be played at up to 2x speed.
Hmmm...anyone else thinking those soft actuators might be very handy as finger or palm pads on artificial limbs?