A rubber-band powered refrigerator is a bit of a stretch...

@SilvaWolfGaming

7 жыл бұрын

omg....that pun

@tgvv2980

7 жыл бұрын

Standard-Issue hah. ha. haha

@fredrikl5152

7 жыл бұрын

lmao clever

@Dustman3400

7 жыл бұрын

I groaned so much I think that actually hurt.

@gos4altair975

7 жыл бұрын

clickbait

Infrared confirms that your mustache is relatively cool.

@bloodaid

7 жыл бұрын

I'll frame this comment and put it on my wall.

@hdef6602

7 жыл бұрын

+

@mdouse84

7 жыл бұрын

Haha. Perfect comment.

@greatexpectations1461

7 жыл бұрын

athangyu

@panaxo

7 жыл бұрын

Top 10 best comments 2017

Damn that handheld cnc tool is amazing

@thesmileyshyguy5717

3 жыл бұрын

Quack quck

You violated the first rule of thermodynamics! We do not talk about thermodynamics!

@mrflippygaming8081

7 жыл бұрын

I've always heard about that, but I don't know where that reference comes from. :[

@ronnie6008

7 жыл бұрын

MrFlippy Gaming Fight Club; Starred Brad Pitt and Edward Norton (back in the late 90s I think). The first rule of fight club is: WE DO NOT TALK ABOUT FIGHT CLUB! Give it a watch!

@mrflippygaming8081

7 жыл бұрын

Thanks, Ronnie!

@RisingNinjaMC

6 жыл бұрын

The first "rule" of thermodynamics is the application of the conservation of energy principle to heat and thermodynamic processes i.e. the change of internal energy of a system is equal to the heat added to the system minus the work done by the system

@laserdemonfrostmage8421

6 жыл бұрын

RisingNinjaMC joke shitter of the day

That hand held CNC router is the coolest and most practical machine I've seen.

@Shapertools

7 жыл бұрын

Thanks! We started pre-sales today! There's more tech specs and videos at shapertools.com

@marcofico1

7 жыл бұрын

+Shaper US only....

@EngineeringVignettes

7 жыл бұрын

@Shaper : Does it move itself around (X,Y) via motors? Or is that passive? Either way, it's very neat.

@confuseatronica

7 жыл бұрын

that thing is magic voodoo... one of those things that actually makes me feel I'm living in the 21st century.

@seephor

7 жыл бұрын

Do you have any plans to add a Z dimension or does it currently support the Z axis?

Watching American scientists use metric measurements makes me very happy

@Edmocci

7 жыл бұрын

I wonder why that is? Why something like that tops getting laid, or having a chocolate shake for you? But on the screen of his router by Shaper Tools, at 3:43, I notice it says his bit diameter is set at 0.125 in, his bit offset is set to 0 in", and his cut depth is set to 0.125".... then at 4:07 he refers to "half inch thick plywood", guess you better call the police and report him, then find you a girlfriend.

@DV-zv4ox

7 жыл бұрын

Ed West Wow, I had no idea such an innocuous comment could incite such a snarky, pretentious response. It was a friendly jab at my US friends for (mostly) still using the imperial system. I had no idea it would ruffle someone's feathers like this. I think you need to go for a walk, Ed.

@NickC_222

7 жыл бұрын

Ed West Do you feel better now, Ed? Has your life improved now because of that comment, Ed? Someone's cranky; maybe it's time to take a nap, Ed, you silly geezer, you. Feel free to write an apology to Daniel in the form of a haiku after you wake up.

@Edmocci

7 жыл бұрын

No ruffled feathers here, I just honestly wanted to know why or how it matters to you what system of measure someone else uses. As a printer, I measured length is picas, and points. A unit of measure is really an arbitrary meaningless thing, as long as you understand it, you could make up your own unit. We don't call it imperial, we call it Standard. But yet there just seems to be this "outrage" that America has not made the metric system the daily driver of units of measure. And also, maybe you can clarify the incongruity of using the word 'innocuous' and 'jab' to describe the same action.

@FecalMatador

7 жыл бұрын

Ed West He is correct in his usage. You, however, are a douche.

I see a lot of people are missing the crazy ass router device that takes a general pass and making a perfect cut! That is cray cray!!! Well I'm a carpenter so I'm impressed.

@Dalewoodian

5 жыл бұрын

Think of the fjords you could design with one of those puppies

@dabinhaler1337

5 жыл бұрын

sick piece of kit eh

@PowerScissor

5 жыл бұрын

After taxes it's over $3,000 so you'd have to be more than a hobbyist to justify that. I bet if they could have gotten the price point down to 1k a lot of DIY purchases would happen. But it's a PRO tool as is.

@heatedcr

5 жыл бұрын

@@PowerScissor But at $3k it will keep it out of enough hands to where it might possibly be easy to make some money off of it. You might even get it to pay for itself. If it was $1k you'd have a ton more competition. I wonder about the variety of materials it can cut. Would be awesome if it can do acrylic, plexi glass, prototype circuit boards, 1/16" steel/aluminum/copper, cardboard, various natural woods and engineered woods, modern composites like carbon fiber. and plastic/petroleum based materials. Then your options are limitless...raspberry pi cases, phone cases, brackets for commercial, residential, and automotive applications, guitar pedal boxes, mini solid state amps, customized storage & organization containers, protective cases, custom heat sinks, and so on. And those were just what I could think of in a couple minutes... Man guess my savings account is taking an extra $3k hit this christmas. How did this happen... I just came here to look inexpensive rubber band project builds..

@fergochan

5 жыл бұрын

I'm not a carpenter or anything like that, but the moment I saw that router I had to google it immediately to see if it were even a real thing!

God bless this man for using metric units

@josephbraswell2205

5 жыл бұрын

I don't understand It needs to be in football fields

@philipmacduffie7612

4 жыл бұрын

How original.

@fredfrancis5221

4 жыл бұрын

The metric system only exists so that the French can accomplish administratively what they were unable to do on the battlefield!

@Rhaxin

3 жыл бұрын

@@fredfrancis5221 You must mean being smart and progressive. I don't know much about French warfare, but I do know what 95% of the world population think of Imperial.

@marinazlobina1153

3 жыл бұрын

*Only 18* 👇👇👇 490116.loveisreal.ru

Whoa, it's The Slingshot Channel meets Matthias Wandel!

@alpha434

7 жыл бұрын

I almost said the same thing. I'm glad others have the same broad tastes that I do.

@SsoulBlade

7 жыл бұрын

Matthias Wandel is awesome, I don't even do woodworking or is interested in it at all. I am now due to him.

@BenjaminEsposti

7 жыл бұрын

SsoulBlade Same here X'D Well actually I really take a liking to having lots of woodwork in houses. I'm a fancy-pants kinda guy lol ... or I guess you could say "artistic" or "expressive" XD

@benaloney

7 жыл бұрын

Didn't use Matthias Wandel's gear generator though lol

@hdef6602

7 жыл бұрын

+

Very cool demo

@AppliedScience

7 жыл бұрын

Thanks!

@hardwirecars

7 жыл бұрын

yall need to add some information technology into this string

@googlesuxbigtime1227

7 жыл бұрын

+Applied Science I want that CNC router.

@thewebspinner

7 жыл бұрын

IT guy here, can confirm this video was cool.

I’m glad that there are people like you out there wasting your time, so that I don’t have to.

"You can try this at home" "Go to your office drawer" Got it.

I've always wondered if that was possible! Excellent project!

@drumid1881

7 жыл бұрын

Hey Cody, you watch applied science too? Small world

@wompstopm123

7 жыл бұрын

hey cody! your channel is great keep it up, i learned alot from it!

@the0elite

7 жыл бұрын

Now pull rubber bands in a vacuum

@Jupiter__001_

7 жыл бұрын

Hey Cody.

@Nativemetalfreak

7 жыл бұрын

hey its cody

I think you're making a wrong assumption. For when you stretch the band, you're assuming an expansion. But I would challenge that and say it is only an expansion in one direction... lengthwise. But if you consider a cross-section at each extreme, I'm sure you would agree that the cross-section of the stretched band has greatly contracted. What I would really like know is whether the volume of rubber is the same or less when fully stretched. I suspect it is less, and the space between the rubber molecules has been reduced. So when stretched, the band temp changes towards a room-temp equilibrium... then holds that level of energy... and when un-stretched, the band volume increases, just as the cross-section does, and that stretched band energy then gets dissipated into the greater volume, which means a lowing of temperature of each molecule.

@8literbeater

7 жыл бұрын

I was thinking the exact same thing. For a given volume, as the length in one direction increases, the area of the cross-section decreases, approaching zero, taking the total volume toward zero. Reducing volume (compressing) increases pressure - exothermic. The opposite, of course, when the band length contracts, is when the volume increases to a maximum, and is endothermic. The description in the video sounds like spiritual hocus-pocus. Except, of course, the law of conservation of energy (work goes in, something has to come out).

@asterisqueetperil2149

7 жыл бұрын

www.feynmanlectures.caltech.edu/I_44.html#Ch44-S1

@8literbeater

7 жыл бұрын

Astérisque Etpéril Okay, so it's the law of conservation of energy, and this; _"The detailed mechanism is so complex that we cannot, by kinetic theory, really determine exactly what happens"_ I'd bet that I'm right.

@asterisqueetperil2149

7 жыл бұрын

8literbeater Just read the thing^^

@BrianSu

7 жыл бұрын

Makes perfect sense. Thanks.

Just the mere fact that you discovered a thermodynamic property and acted upon it is commendable. Your design and rendering of your prototype is exceptional as well and the tools you used to make it happen are state of the art too. I think Tesla would have liked you. Keep up the good work man. It's guys like you that make things happen.

I don't know if you've ever mentioned it or keep your profession unknown, but are you a teacher outside of youtube? Your deep dives into experiments and weird technologies are so damn thorough and educational that it scratches the itch for learning that's been haunting me since college. Thanks so much for what you do, I look forward to every single video...and excited for you to hit 1M subscribers soon!

I can't put into words how impressed I am. I envy your mind and your willingness to follow through. I'll stop now before my man- crush becomes obvious and this gets weird.

@WotchTheWerldBern

7 жыл бұрын

hahahahaha!

@CubeRepublic

7 жыл бұрын

Sounds like you want to stretch some rubber.

@ZeedijkMike

7 жыл бұрын

Nearly pissed my pants from laughing 😅 But yes. Great video - as usual.

@BenjaminEsposti

7 жыл бұрын

Ahahahaha X'DDD

@blackhatvisions

7 жыл бұрын

gay

Applied Science hasn't made a video in a while. Applied Science has been busy. Applied Science works at Valve. Applied Science has been working on HL3. Applied Science is done being busy. HL3 confirmed. Also there are triangles everywhere.

@AppliedScience

7 жыл бұрын

I've worked at Verily (Google Life Sciences) for the past couple years, so I can't have anything to do with HL3.

@IAMENS1

7 жыл бұрын

+Applied Science that's exactly what someone working on HL3 would say.

@Braeden123698745

7 жыл бұрын

Haha aww...

@Gameboygenius

7 жыл бұрын

Also, the spanner in the channel logo is 1/3 above the top of the flask. Once again, HL3 confirmed.

@cechk01

7 жыл бұрын

he left valve awhile ago

Who the hell do not like this amazing video? The level of practical and scientific content is impressive. Thank you so much :)

@ivok9846

4 жыл бұрын

did he make a real refrigerator? will you make one for yourself? did you, at least, learn why real refrigerator is better than his? just asking...

so nice to have something recommended on youtube thats actually worth watching...very entertaining and educational. this is the stuff i wish we could have had back in school. i do vaguely remember playing with rubber bands back in the day and noticing the heat cool thing, but you never really think about that stuff, until years later someone brings it up like this.

Try spraying water mist on the hot rubber bands. If you cool the stretched rubber bands with water you can actually get the water to freeze when the rubber band contracts. Works well with balloons.

A NASA tech brief from 1970 describes such a "manually operated elastomer heat pump": ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19700000259_1970000259.pdf

@Alex-ri6be

7 жыл бұрын

I think the NASA design allows for adjusting the tension on the rubberbands by screwing the rods further in or out of the disc. Nice video btw.

@AppliedScience

7 жыл бұрын

Great find! The tech brief says NASA even patented the idea :)

@Alex-ri6be

7 жыл бұрын

+Applied Science I found it linked in one of the comments on a post discussing this phenomenon at the physics stack exchange physics.stackexchange.com/questions/54738/rubber-band-stretched-produces-heat-and-when-released-absorbs-heat-why

@Ticholasnesla

7 жыл бұрын

wow! do u have more of this inventions from NASA? I find it very interesting

@mirzamay

7 жыл бұрын

Wow.!

I took thermodynamics last quarter as a part of my engineering degree. I love how you explained why the band gets colder in a way everyone can understand. I was wondering how you were going to explain it at the end and you did a fabulous job. subscribed

When you're in thermal vision you look like Vladimir Lenin

@alvinxyz7419

5 жыл бұрын

It looks like bald pennywise

@aceapache4914

3 жыл бұрын

You’re right

@ImPedofinderGeneral

3 жыл бұрын

@@alvinxyz7419 ...posessed by Lenin's ghost

@tom23rd

3 жыл бұрын

Actually, lenin is a lot colder these days.

@asmolbean9300

2 жыл бұрын

@@alvinxyz7419 he looks like Lenin in the visible light spectrum as well

Hey! I've been watching your videos for a long time now, and they have had huge influence on me working on my projects. And now I've been offered an internship at Google ! Thanks for the inspiration Ben

@AppliedScience

7 жыл бұрын

I'm glad to hear it! When you start your internship, look me up in teams and shoot me an email.

@alexandercarvunaris846

7 жыл бұрын

woo nukes as icons.

I love how almost every time you make a video it's about something I either never heard of, or never knew how it worked. You are a huge asset to my subscription list!

The simpler explanation: When you compress any gas, you're adding to its potential energy. The air heats up. When you stretch a rubber band, you're adding to its potential energy. The band heats up.

@geckoo9190

5 жыл бұрын

Yea basically, that and you are reducing the space that the molecules have for playing therefor rising the posibility of a collision and the the temperature, it sounds weird that that works in a rubber band but if you think about it in that way, it makes sense.

@connerbaird834

5 жыл бұрын

Thanks

@orbitalvagabond7371

5 жыл бұрын

Sorry, but that's not how it works. The heat energy doesn't translate to potential energy in elastics like rubber bands, unlike gasses.

@guillaumethemapler

5 жыл бұрын

@@orbitalvagabond7371 no that's the point you stretch them out (higher potential energy) and it comes back to gether which lowers potential energy raising the temperature. I think that's what he meant.

@orbitalvagabond7371

5 жыл бұрын

@@guillaumethemapler no, he meant an increase in potential energy is stored by increasing the temperature of the material, which isn't a thing outside of fluids. Interestingly, he might be sort of right that the force that increases potential energy does directly add energy that is expressed as temperature, but that's likely not the main mechanism here, nor is any temperature increase significantly translated back to potential energy (analogous to friction: you add energy, which increases temperature but doesn't effect potential energy). What you suggest would work only if the band does work to itself (i.e. it's not attached to anything when it contracts), and even then it competes with the cooling phenomenon shown in the video, which more has to do with degrees of freedom in each polymer molecule.

2C cooler? So all we need to avert global crisis is a very big one of these.

@hanro50

5 жыл бұрын

We'll need somewhere to dump the heat

@sci_pain3409

5 жыл бұрын

@@hanro50 i vote west virginia

@hanro50

5 жыл бұрын

@@sci_pain3409 Why not South Virginia?

@sci_pain3409

5 жыл бұрын

@@hanro50 East Virginia

@hanro50

5 жыл бұрын

@@sci_pain3409 Lets scap that idea... The whole Virginia

when i was younger I used to stretch a rubber band and then put it on my lips. I enjoyed that it got cool every time i released it. You just made me remember that lol

THANKSGIVING There is another cooling effect produced by sucking on a straw creating a high frequency vibration at the tip, discovered it when i was a kid 40 years ago.

Came here to see the rubber-band fridge, ended up getting completely sold on the handheld CNC router. Well played, Applied Science, well played.

Awesome idea. It makes total sense to me (lifetime of being heavily absorbed into the HVAC field). When stretched , the molecules come closer together (compression of molecules) creating heat. Once this heat has been dumped into the air, the releasing of tension allows the molecules to expand, causing the “cooling” effect. Obviously the same thing happens with refrigerant as far as molecular density/energy. Nowhere however had I saw someone put this together as you have. I suspect the gas compression style would always win out though, due to both styles still needing input power. The observation of this effect is incredible and I appreciate it greatly! Helps keep things fresh!

Instead of using multiple bands, why not use one long, thick rubber band. Outside the box the band can be stretched over a hollow metal roller with a fan inside (ideally to transfer heat off the band quickly) but have the band go inside the box via two pinch rollers (one for send and one for return) in order to make it so that the band has high tension outside, and hangs loose or almost loose inside. The pinch roller going into the box will be where it becomes loose, lowering the temperature and allowing the band to suck heat from inside the box, and then the pinch roller coming back out will be where the band gets stretched back to becoming hot, where the large metal roller can make it quickly equalize temperature again. You could probably use a very long and wide rubber band and get a lot more surface area for the heat transfer to occur, plus you'd need a lot less gearing and crazy stuff. The major challenge I could see would be tensioning the pinch rollers such that the band can actually move smoothly, but be able to maintain two significantly different tension levels on the different parts of the one rubber band. (Maybe some kind of pulley system, or some ratcheting system similar to an old movie projector could be more effective)

Really cool aesthetic on that thing! Great project.

this is proper youtube content. not like those lame channels that basically take material off other channels and recreate it as their own just for a quick buck.

I did not know those type of CNC router guides existed. Seems a bit too expensive for me right now, I need a proper CNC machine first, then this would make for a nice addition. Very neat product, wish I could afford one! Also, this refrigerator is ingenious! I had never thought to use a rubber band this way- I did know about the heating cooling trick though. I'll bet other rubber like materials behave in similar ways- gives me a lot of ideas :D Great video! I'll bet with a more refined version using insulation and figuring out how to seal the gears up so that air didn't enter/escape you could get a few more degrees out of it. It's about removing the heat, not putting cold air inside, you should be able to get close to ambient without refrigerants and compressors. The larger the cooled surface is, the more heat it can collect, the more efficient it'll be- so more rubber bands and maximizing how many rubber bands are inside the box at any given time would help a bit too. It'd be neat to try to design a highly optimized version of this- maybe some Day when I've got both time and money to burn I'll try to make my own- who knows if I'll ever have the money part though :P

Perhaps you can try building it in reverse. The unstretched rubber bands being stretched on the inside of the fridge to absorb heat and the stretched bands contracting on the outside to let that heat go.

@gulktroktet

7 жыл бұрын

That's... not how this works.

@jeffnarum1373

7 жыл бұрын

Like a microwave... I think the greater surface area of the rubber bands would help. What if you ran this under water?

@damenwhelan3236

7 жыл бұрын

conservation of energy.

@ProGamer1515

7 жыл бұрын

A fridge works by removing heat from a system and transferring it outside of that system (Into the room). If the rubber bands absorb the heat of the insulated box when stretched they should be able to release it into the room while on the outside.

@damenwhelan3236

7 жыл бұрын

ProGamer1515 There in the problem lies. The bands can only leave the box by ways of a large opening, you would have only a slight tempreture difference. And you can't enclose the box fully as the heat would have no where to go. The NASA design uses a "cooling fluid" and that fluid is used to cool the fridge. But the mechanism involved is messy and complicated and possibly either toxic or flammable....

You never cease to amaze, thank you for all your videos.

I just come home late, holding a can of beer - and let my GF stare at me for 10 mins tapping her foot. Temperature of can and room drop by about 10 degrees Celsius. Thermal camera indicates temperature of GF's head rises by about the same.

@TheDennyslash

5 жыл бұрын

GaryChap not to mention the rise in temperature of heads of the neighbors getting irritaded by all the tapping they hear from above. Btw where can I get that magic beer that just gets cooler over time?

@Neo-po2xw

5 жыл бұрын

haha

@NJtheawesome

5 жыл бұрын

That makes no sense.

@typeunknown1540

5 жыл бұрын

But... muh entropy...

@thehotwheelshunter

5 жыл бұрын

awesome comment

I'm a Mechanical Engineering student and this is one of the coolest things I've ever seen (no pun intended). You are a brilliant mind! Even if it doesn't work super well, it's incredibly neat.

Cascade these until you can chill your beer!

OMG thank you. I tried to do this with Erector Set parts when I was ten. I realized I didn't have the technical know-how to seal it up so that I could capture the differential. I tried cooling a trickle of water...but ran into problems with the metal parts. Of course I didn't have thermal imaging in 1960! LOL Thanks for the proof-of-concept project.

I love the way you teach us about things that nobody ever even realised they needed teaching about, I love this channel

As a kid I used to fidget with rubber bands, enjoying the coolness against my lip. And wretched me never thought to question WHY they got cooler after de-tensioning. Now I know and am once again happily fidgeting with a rubber band.

Hi Ben. I'm a huge fan of your videos and I always watch one vid every morning. And today is a very sad day for me since I have watched every single vid from the very beginning up to this one. There are a couple other similar channels like NightHawkInLight and Cody's Lab, but I find yours to be by far the most interesting. Please do continue your work and I'm waiting for updates on ruby laser, high-pressure chamber, gecko tape, etc projects. Even if you havent achieved a huge success with some of them -- it's still interesting to learn even from negative results.

@AppliedScience

7 жыл бұрын

Thanks! I really appreciate it. I've been pretty busy with work, but there will be more videos in the future.

@zagadka3147

6 жыл бұрын

I just want a mega rubber band AC unit

@williamthebutcherssonprodu227

6 жыл бұрын

Alexander Sannikov @

it literally looks like something from a dr sues book

@user-pi5xz5je4y

6 жыл бұрын

*seuss

@loustandards2827

5 жыл бұрын

There's a lawyer joke in here somewhere

That was a genuinely pretty cool idea!

My great grandfather built a solar powered refrigerator 120 years ago. He noticed that the leaves on the tree that hung over the pile of coal fluttered upwards on especially sunny days. So he spread a huge pile of coal around on top of the well in his back yard. Then he built a sort of windmill except the axis of the windmill was vertical. He placed the windmill over the pile of coal. On sunny days heat would rise from the coal pile and cause the windmill to spin. That was sufficient to drive a pump that pumped water from the well which at the surface was around 40-50 degrees f in the middle of the summer. This was in Massachusetts. The water was pumped through tubes that ran through a cooling shed located under a shade tree. The hotter the sun shined the faster the fan would spin and the faster the pump would run. This meant the sunnier the day the more the cold water pumped from the well would flow through the shed cooling the food inside. According to my father who lived with his grandfather for a few years, that is what they used to keep food cool for six months of the year. No matter how hot it was outside, the inside of the shed never exceeded about 50 degrees. While 50 degrees f wouldn't do in today's world, back 120 years ago it was a good way to save on buying ice from the ice man once a week. My father told me his grandfather's solar refrigerator was still up and running during the second world war. He told me about how when they had a heat wave in the summer, all the kids and sometimes elderly family, friends and neighbors would huddle inside the cooling shed to cool down. Of course this wouldn't work in southern states or any place with a very low water table.

I'm absolutely speechless! The world needs more inventors like you Mr. "Applied Science"! Great job and a huge thumb up by me!

@petercimino9546

7 жыл бұрын

boilingaction ki lfgkkhkrp

@kevinc638

6 жыл бұрын

Agreed 100%!

@crimsonknight5575

6 жыл бұрын

boilingaction I totally agree with you.

@JPBTVA

5 жыл бұрын

CRINGE

@JPBTVA

5 жыл бұрын

Peter simino did you literally just punch your IPad!?

every video this guy makes is great

That handheld router looks absolutely amazing.

I'm usually frustrated by the (lack of) quality on educational/instructional videos, but this is spot on. Well filmed and edited, not too long, interesting subject (that 'fridge even looks cool!)...nice!

Surgical rubber might be a better alternative to rubber bands.

It seems like this could be made a bit more efficient. I was thinking one large rubber band that runs on a tape reel sort of device. It would be driven by one drive pulley. The wheel before the drive pulley would a drag wheel. With it tension set keep the portion between the driven pulley. That portion would be outside the fridge. With a fan blowing vertically across it and through a shroud. The same for the inside.

wait wait wait, a hand held cnc router. The engineers of the world have been killing it!

You would think they would incorporated the idea with a car radiator or the engine block, imagine they went another way.... or they haven’t thought about it yet. This channel is awesome!

I want to hear Jörg Sprave laughing and saying "Let me show you it's features"

Roy Hinkley would have given his left coconut for such knowledge.

@gregistopal

7 жыл бұрын

Who's that

@JimTheZombieHunter

7 жыл бұрын

The professor on Gilligan's island.

@JohnDlugosz

7 жыл бұрын

Thumbs up if you knew who that was without the spoiler!

@richardgray5207

7 жыл бұрын

+John Długosz 🍗

@wellesradio

7 жыл бұрын

I'm sure he likely used that in some capacity. Doesn't do much for fixing a hole in a boat apparently.

Cool video. I didn't really follow your explanation on the rubber band, but the way it makes sense to me is that when you stretch the rubber band you are compressing its internal structure and then when you release the rubber band it decompresses. When you stretch the rubber band the inline dimensions (the width and thickness) shrink and compress the internal structure, so yes the band is longer but it's much thinner and under pressure. The thinking problem is just that when you stretch the rubber band you think about it getting bigger when in reality its overall measurable dimensions are getting smaller.

I watch SO many woodworking vids on youtube, and have NEVER seen this handheld CNC router! What is this sorcery!! Subbed and liked as a result! Awesome!

What a wacky project. Thanks for doing this experiment for us. Liked the Frantone shout-out in the background. 🙂

@chuckzc

5 жыл бұрын

Had to go back and look an there it was. A Peach Fuzz!!

He looks like Lenin in thermal vision.

@DroCaMk3

6 жыл бұрын

But so true

@Horny_Fruit_Flies

6 жыл бұрын

Seize the means of refrigeration.

@2012isRonPaul

6 жыл бұрын

one angry marxist -____-

Really a most interesting example of how energy relates to entropy. My children demonstrate it in their bedrooms every day. But unluckily the rooms won't become cooler to them when tidying up.

Such a great teacher. Covers all the points to help you understand. And mentions things you can look up instead of going off on tangents.

Positively fantastic vid. Loved it. Great explanation, excellent designing, nice craftsmanship and very well presented and produced video. You guys should be on TV. I enjoyed watching.

Held rubber bands to lips. Lips severed.

@aniketchadalavada9402

6 жыл бұрын

lel

I knew about the rubber band concept, but never thought someone would actually do something with it. I also wondered if a rubber material can be made into microscopic hollow spheres that could be placed into a liquid and put under pressure to be compressed and heat up and then decompressed to cool down - this would be a fluorocarbon free refrigerant. Whoever discovers a way to do this will change the way we keep cool.

Its really inspiring watching inventors doing their own projects like this. It really does give me hope. Please keep up the awesome work AS.

That was great! I highly recommend checking out Richard Feynman's explanation of how rubber bands work (it's on YT). Looking forward to seeing the rubber band refrigerator v2.0 Ben!

other than the cool demonstration, I really liked how you explained everything. amazing, and thank you.

This is fascinating. Once high energy rubber technology research gets under way there are myriads of possible applications for this. Thanks for a a very interesting post.

To this day I still think about this video. Such a beautiful display of material mechanics. I can’t believe all this fit into less than 8 min!

It was the first video what I saw in your channel few years ago, and the elasto-caloric effect is a really cool phenomena. I'm planning a different version of cooler as yours, but with the same effect of the natural latex. I look forward to the continuation of your video, but unfortunately it's not happened. :( But you've made a tons of interesting others, of course! Congratulation for your works! BLADE

That was seriously awesome. Subscribed.

@narco73

7 жыл бұрын

And so is the router! Hmmm....

Really great video - the white heat from the shaft without bearings also cancelled some of the cooling effect. Really awesome video and prototype

It made me laugh as soon as I saw the title. I noticed the cooling and heating effect of stretching and releasing rubber bands while touching them to my lip years ago and wondered if anyone might be able to make use of that energy. Congratulations, there is a huge distance between thinking and doing.

You need a better insulated box! I doubt that plywood box can sustain much of a temperature differential with such a low rate of cooling. Also, I hope those rotational parts inside the box are on bearings. Otherwise, I fear the heat generated from friction is working against the cooling.

@wooferjr169

5 жыл бұрын

If he did all those things you said it could drop another -2°C

@brainmind4070

5 жыл бұрын

WooferJr He also needs to sample the temperature a few different places inside the box with temperature probes and average them as well as doing the same thing outside the box and comparing the two for a proper measurement.

@steve42lawson

5 жыл бұрын

It's a proof-of-concept, not a beer cooler...sheesh.

@Flatgod

5 жыл бұрын

@@brainmind4070 That's right, and if he would have done that, he would realize that he has actually accomplished the opposite of what he thought. He has actually created a heater.

@onetwothree4148

5 жыл бұрын

@@Flatgod No he didn't.

i like that your using the Therm-App camera, i got to play with one and i think im going to buy it someday. this was a really wonderful video!

@Papperlapappmaul

7 жыл бұрын

*you're, Mister Super-Genius ;-)

@ThePostApocalypticInventor

7 жыл бұрын

KZread is a village, isn't it? :D

@RinoaL

7 жыл бұрын

The Post Apocalyptic Inventor yeah, a wonderful little virtual village. :D

@crumbs182

7 жыл бұрын

I'm a fan of all of your channels!

@AppliedScience

7 жыл бұрын

Thanks! I bought the Therm-App 25Hz model, which is more expensive, and requires one extra bit of paperwork. It really does run at 25Hz, even 27Hz sometimes, but occasionally gets into a mode where it drops a few frames every couple seconds. I'm using it with a Nexus 5X and USB-C adapter. The folks at Opgal did not recognize the problem, and overall I'm happy with it, but I would think more carefully about dedicated thermal cameras vs. phone add-ons in the future.

Great explanation about the rubber band phenomenon. Creating order (or at least reduced disorder) out of chaos requires input of energy, ask any kid asked to tidy their bedroom.

Most elaborate router commercial I've ever seen

2:30 That is a really pretty machine

@johnfbrown7724

6 жыл бұрын

Stefan Reich .

It's 2016 and we still have molecular segregation. Come on people, let's work on that.

I thought of this when I was a kid and felt the cooling of a rubber band when it is released. Fun project.

A very well constructed video, doesn't rush to the point or draw it out for revenue.

Very "cool" :D

@EngineeringVignettes

7 жыл бұрын

(groan) :)-

@jaredj631

7 жыл бұрын

+Deathlok67 ಠ_ಠ

@heckler73

7 жыл бұрын

Uh dur hur hur...

@thomaskn1012

7 жыл бұрын

Yes, it's cool, but a refrigerator ran on rubber bands? Kind of a stretch!

@JohnHeisz

7 жыл бұрын

Tomaz He's not pulling your leg!

I been refrigerating with rubber bands for years. Has this guy been living under a rock?? I take my rubber band car to my rubber band plane to everyone's favorite place, Rubber Band World!!!

I've learned about this effect. It does happen, but science teachers have been encouraged to say that this effect is the same as what makes heat pumps (i.e., air-conditioners, refrigerators - and the device that is popularly known as "heat pumps") work - i.e., doing a CCW cycle of a fluid material in a Temperature-Entropy property locus. The rubber band refrigeration works because allowing a rubber band to de-stretch causes a chemical reaction, in the form of hydrogen bonding, that is endothermic (i.e., the stretching causes the opposite exothermic reaction).

This guy is part of the 1% of people who can actually get shit done

What about a conveyor belt design? With a toothed belt and 2 gear you could recreate this stretching. And what about just a metal roll pushing into a roll of rubber? Then the squeezed side should become hot, right?

I wonder if you can make like a computer case with this lol

What a great physics demonstration, and beautiful craftsmanship. Way to go, dude.

Joerg Sprave suggested this idea so many years ago. It's interesting to see someone actually tried it.

can you do it through multiple layers? Like the outer system cools the inner one and the inner one cools the inner inner one and so on?

the bigger the better... hold it up to your lips... now if you stretch it really hard... blow on it...

@Kazemahou

7 жыл бұрын

You are? That is very brave of you to announce yourself, Dramawind! It is Pride month after all. Good for you, Dramawind! I celebrate your identification as homosexual!

@dramawind

7 жыл бұрын

I... um. I don't like dicks.

@natturefrk

6 жыл бұрын

Wow this is why humanity is doomed

@elmergloo3259

6 жыл бұрын

It's this some secret code from national treasure? What am I missing?

@laserdemonfrostmage8421

6 жыл бұрын

Insta duck face

Great channel, just discovered it and am quickly working my way through your back catalogue, keep them coming.

I found you via a iink from Mr. Carlson's Lab. I figured if you could impress Paul Carlson, than you would be worth checking out. I figured right. Incredible stuff. And I love your Bridgeport. Brings back memories. Thank you.

Who else saw the beginning about rubber bands cooling and thought he would stretch a ton of rubber bands and release them to make the fridge

"Let me show you it's features!"

@ComboMon-

5 жыл бұрын

(German chuckle)

@toby8309

5 жыл бұрын

Ok show em to me.

Wow - I imagined this idea as a kid, but never thought I'd live to see someone actually try it! To test whether your body heat is throwing out the experiment, you could do a control run: Shut the box for 5 minutes and stand next to it in the usual position but without turning the handle. Then see if you get the same temperature differential as for the real run. Would love to see if it really works!

I didn't know this rubber band phenomenon, thanks for sharing. Great wood working result!