The fridge is by FAR the most reliable machine in your house. A fridge’s compressor motor will spin around several billion times in its life without service, cleaning or oiling.

The science is one thing, but the presence, communication and performance is what brings this show home. Shout-out to the production crew behind the scenes too. Bloody brilliant.

I work in refrigeration and it's fairly accurate. The coil on the back of the fridge could be explained a bit further. It's called a 'condenser'. The compressor pressurises the regrigerant gas. This makes it hot and high pressure. The condenser takes the heat - caused by compression - out. This causes the high pressure hot gas to condense to a cool liquid. Rather like steam from a kettle condensing to a liquid on a cool window. This high pressure cool liquid arrives at the evaporator. And it is literally quirted through a tiny nozzle into the much wider tubing of the evaporator. This causes the liquid to expand into a gas. The transition from liquid to gas requires heat so it takes heat from its surroundings - your food. Your food cools, the cool gas gets a bit warmer from the heat from your food. As it expands it becomes a low pressure warmer gas. This is then sucked back into the compressor to repeat the process. Forever.

Dear Rob and Dean, I am a 57 year old physicist who loved your show so much as a kid. My scientific career started with trying to replicate many things you did on the show. I have nothing but fond memories of you both. Thank you both so much.

Doesn't matter how old a show is, science is science. It's still really well explained. It's done so simply I'm going to share with my daughter.

Best explanation I've found online. The bike pump and aerosol can demonstration made it easy to understand. Love it!

This was awesome, wow. Exceeded my expectations. Why is this show not on T.V these days?

Dont do what I did when I was a kid and grind through the pipes of an old fridge with an Angle Grinder only to find out the refrigerant is flammable. Burnt off a large portion of my hair and had no eye brows for a bit. Love the curiosity show. It was so cool

how have i gone this far in my life without knowing any of this. ive had a fridge my whole life and not once did i question how it worked.

The power of simplicity. The explanation for a refrigerator couldn’t be easier than this.

I have watched modern videos a lot but with this, for the first time i was able to understand the actual reason why it cools. Compression and Rarefaction.

I'm a 24 year old Computer Science student and this is the first time that I fully understand how a refrigerator works. This stuff isn't just for kids imo :D

I wish there were still shows like this nowadays. I'm 22 and I've always wondered how a fridge works! Thank goodness for this show, explaining in such simple terms :)

The fridge sounds like a diesel truck

I am a 16 year old American, and now a fan of this show.

Thanks for posting this on YT - great to be able to continue watching my favourite show from when I was a kid. the presenters and demonstrations made it a success but I always appreciated being talked to by someone who thought I was intelligent enough to understand.

I had always wanted to know how fridges worked. This has been the best video I've seen, thank you so much.

Perfect explanation - no patronising of the target audience either! Awesome job, thanks for sharing...

Who thought of the concept of combining tyre pump and spray can is a genius, he deserved a raise

School should start teaching like this. Easy and direct to the point.

That’s some quality stuff. Very simply and concisely explained with easy to understand examples.

Thanks a lot for this informative video! It is the best explanation how fridge works I have ever seen

The ability to watch this stuff at will is invaluable. Thank you for these.

These old 'how things work' type of videos are soooo good at explaining thing.

This is one of the best explanations of refrigeration I have ever seen. This is an absolute gem thanks for sharing.

I want this man to teach me everything. I feel like I learn so much easier when explained like this

Got to do a science camp with Deane back in 1996 in Rockhampton. Great bloke!

What a great explanation. Good job to the writers and everyone involved. This show was a classic. It doesn't matter how much time goes by it will always be worth to watch.

Jesus! I loved it & I under stood the concept after a long time.Thank you very much Sir.. Thank you very much. Thanks

It was awesome sir...It helped me a lot to polish my concepts out...You are a fair dinkum Australian..I am fond of this aussie accent...

This old show is the simplest and the best explanation I found on youtube. Thank you for sharing.

Somewhere Alec from Technology Connections has a warm feeling every time someone watches a video on topics of heat, great transformation, and thermodynamics. If you haven't watched it, I highly recommend Technology Connection's videos on AC, latent heat, how coolers work, and many more videos he has on topics related to thermodynamics and their efficiencies.

I always thought I was smart. Now I realize it’s because I watched curiosity show as a child.

ur examples made it so easy. thumbs up!

Loved this show while I was growing up, and still love it now ! Thank you guys for making such an engaging, informative and entertaining production.

This is by far the best documentary I have ever seen and that moustache boy that moustache! World class acting right here.

Imagine if they taught us like this at school? It's as if they deliberately made us useless.. Thanks very much for sharing this 👍

Amazing, although the video is over 6 minutes long, I completely understood refrigeration in about 3 minutes. Excellent video.

Wow. Simple old-school show! Absolute treat!

Brilliant show. Loved you guys as a kid and now at 43yo I finally have a basic understanding of how fridges work! Hope you're both well.

I love how these guys do a modern show in the 2010's but make it look like the 70's and 80's - really well done vintage effects!

always loved the show when it was on telly. thanks

Amazing, as always. I'm 45 and am still learning, always learning. Thank you for this :)

G’day Rob and Dean, 49yo aussie here who grew up watching your show and learned so much over the years. I went on to become an Industrial Designer and I’m sure that’s largely due to the fascination for the world that your show provided us kids. Thanks for all that you do 👍

Brilliant tv program! Still ahead of many of the self appointed experts on KZfaq even though decades old now.

That fridge must have weighed a ton back then. Great explanation as always

I have always wondered how a refrigerator works and never bothered to look it up for years, but out of the blue KZfaq just throws this video out there and of course I'm gonna watch in its entirely

I worked selling air cons for 7 years and only just found this video. This is the best video I have seen explains how the refrigerant process works.

This was explained very well, I actually understand it, thank you! :)

I would've went to school every day if I had teachers like this 😅

Thank you guys for making this video's explaining things of which we are mostly curious about in our day to day life.

This must be the most well explained video about the argument I ever seen. Just.. wow!

I found out the reason for global warming........bicyclist pumping them dayum pumps....

Had that exact model fridge freezer (Although mine wasn't THAT noisy!). Kept my beer frosty cold, year in, year out. :-)

This is a great demonstration even though I knew how a refrigerator worked before coming to this video. Now lets have this guy show the sorcery of how a propane refrigerator works. Kinda blows your mind how using a burning fire can cause a cooling effect somewhere else.

I am an mechanical engineer but, never understood refrigeration this well. Nobody tried to simplify the explanation to this level. Hats off to you guys! Thank you

good explanations and very clear understanding

Well, that's a refijeryder, but how does it wok?

I feel very underprivileged that I was not in OZ and therefore could not watch this show growing up (cries in hamburgers and eagles). I can't wait to see the rest! I'm subscribed.

I have watched many videos(animation thing) but none gives the clarity of the working system of refrigerator as this one. Very practical, 👏👏

best explanation ever!!!!

well that is indeed a refrigerator but where's the beer ?

This helped me understand Hvac in a few minutes far better than 2 years of college did

god i love how non perfect but also perfect this is, he actually drag rotates the fridge and aims the tires air at the thermometer, todays videos are too polished

Due to my job, I know very well how refrigerators, air conditioners, etc. work. . . . And there is something important to understand that he has not explained: There is no way to directly create cold, the way these devices work is not by creating cold but by extracting heat. Any chemical or physical reaction generates heat, and the way to cool something is to put it in contact with something else that has a lower temperature and thus they tend to equalize their temperatures. The point is that both a refrigerator and an air conditioner actually generate more heat than the "cold they produce". If all that system were contained inside the refrigerator, the interior of the refrigerator would be warmer than the environment outside. With what the "trick" is precisely in all the components that are on the outside of the refrigerator (in addition to the explanation he gave). Due to the movement of its motor and the electricity it receives, the compressor heats up, and a lot, and that is why it is outside the refrigerator, but the key is in what he explained and added to the kind of radiator that is in the outside of the fridge. That "radiator" is much hotter than the "radiator" inside the fridge, and that's because the radiator inside the fridge is used to extract heat to the outside of the fridge. An air conditioner is exactly the same except that to enhance that heat extraction, a fan is added to the device that is left outside the house to extract heat faster (greater heat extraction = more cooling).

Great job Deane & Curiosity Show. I'm curious ; with the amount of compressed air in all kinds of things from tires to refrigerators, and more. Does these small burst of temperature change (plus the energy used) have a mild/medium effect on the surrounding environments ?

im an 1161 refrigeration and HVAC technician in the marine corps and this is the single best way ive ever heard the refrigeration cycle explained. fantastic work.

I grew up with this show in Australia, so glad the KZfaq algorithm found it for me! It is as great now as it was then!!!

I was playing hide and seek as a kid and hid behind the fridge, the tubes on the back of the fridge were hot and I don’t know why but it shocked the hell out of me😄

I remember watching this episode and trying to make my own fridge, I think I was about 10 at the time :)

'Watching at 4am 'This is the most amazing thing I've ever seen'

Thanks for the show, simple Where ever you have evaporation of humidity, you have a natural cooling process, outside on a rising morning, body, cave, bucket with wet clothe under the sun, ice in salt etc... Then a brain came to transforme and adapte this process through a fridge (chemicaly) Bravo ! It helps us a lot Dom

When you can learn a term worth of science in 6 minutes

Dad has tried to explain this to me for decades. The Curiosity Show taught me in about 4 minutes.

Perfect tutorial video. Using basic components to teach more complex items is a brilliant idea. It seems like I can easily make my own refrigerator 🤩

Thank you so much for this excellent experiment and explanation! I have to present the topic Refrigerator to class next week and this is the PERFECT experiment! Thank you again!

That's one noisy fridge, everyone will know I eat at night..

This is the same reason why things burn up when entering our atmosphere from space. The objects compress the air below them as they fall.

I hope Tim Hunkin has seen this. He did a whole episode about the refridgerator, but this was nice and succint and still presented all the pertinent info.

Best explanation of refrigeration ever! I hope im correct to say compression heats air while decompression cools the air.

This was like the Australian bill nye the science guy show ha.

0:25 - "Have you noticed when you're pumping up your tyre, running late for school..." Kids these days don't as they're all mollycoddled and driven everywhere in SUVs, ironically making it more dangerous for the few that actually DO ride a bicycle to school... or anywhere for that fact. I'm glad I'm a 70s kid... who rode a bike everywhere. Kids these days are really missing out.

What an amazing way to explain refrigerator! Thanks a ton and take my gratitude.

Design / colors / sound fx , everyting is 10/10

INTP

He must not be an academic because he explains it too well.

Man, the off-white beige plastic of the inside of the fridge takes me back to my childhood lol

My grandmother had a GE refrigerator from the 70s that’s now with my uncle. It’s never been serviced and is still ice cold. I’ve never seen a home appliance be so reliable.

We should petition the appropriate network to get this show back on TV.

The only videos that make me smile the whole way through

Thank you, i always wondered how this works. This illustration is just fantastic :)

Dude! I miss these kind of good quality shows, now a days everything is too much complicated and videos are too long to increase view time for sake of money. We need these shows back!

I’ve read 3 textbooks try to explain this in physics and chemistry classes and I never really truly understood it till this video

I wonder how many Australian kids grew up to be scientists because the Curiosity Show guys showed them how good science was. You two made a huge difference to Australian education.

Just had experienced the best of all explanations of all time Thanks a lot.

Thanks for sharing these videos! They are awesome.

I don't know if this could be explained any better. Brilliant.

I’m 27 in America and currently very sad I didn’t have this show earlier in my life

What an explanation! Your explanation is much better than--so-called--modern explanation today.

I once gave myself an ice burn while playing with a spray can of compressed air as a kid haha. at the time it absolutely fascinated me because we were in the summer, and here I am with an ice burn! Knowing compression now it all makes sense but as a kid there was this "magic" to it :)