@veritasium: The First Ice Machine

J :

People are so damn smart man

Adam Hunt :

the energy doesn't come from the act of the piston moving down, it comes from the compression forcing molecules closer together which reduces it's atomic potential energy between atoms which is given off at hear or 'movement'

MangeloNo1 :

yes this is all wrong. If it were correct then the rate at which the piston moved would be critical. It is not! The temperature changes result energy volume/ density relationship changes!

Meriad23🍉 :

so that's why it's call compressor

Oopsies :

A thought; If you left it compressed forever without applying any more force or taking any force away what would happen to the molecules inside the cylinder? Just entropy?

Cheesyfinger :

Question: if compressed air heats up, how have we not found a way to use that heat energy to generate power…..limitless air = limitless power

EventyrligDrikke :

the explanation for the increase in temperature being because of the collision with the piston seems off to me. You get the same increase in temperature in a fixed volume cylinder with the air coming from outside. I always assumed it had to to with the same amount of energy taking up less space. Anyone who knows physics who would like to clarify for me?

Mike Scott9230 :

This is how diesel engines work. The piston compresses the air to such a high temperature that the fuel ignites upon injection, which is why they dont need a spark

gabe :

This is wrong, the thermodynamics can be modeled with the equation PV=NT, which says nothing about the piston’s velocity. Said another way, N is number of particles so N =PV/T => Volume goes down so Pressure and Temperature must go up as well.

Stensland :

Part 2?

XCELeration :

Air is naturally cooler when it’s denser, that’s how forms of matter work, however AC/Freezers and diesel engines work off this same concept, the diesel engine increases/decreases compression at an intense rate which is why the temperature rises, but when air is steadily compressed it gets colder, hence why cold air intake/turbo/superchargers exists, it all has to do with how fast you’re compressing your air

NoBorschtForYou :

I was expecting more from a Veritasium video. This is most definitely *not* the reason the temperature increases

manny. :

so it's all in the speed of molecules

Cheesemo :

And how are you going to crank the lever when the pressure is too great for you to do so? Pressure also adds resistance, as pressure builds it will become more and more difficult to add force to compress the air.

Sheyla :

where's the part 2 mother father?

Acifickmepsuwiz :

I don't want to sir

𝓛𝓝 :

leon⁸ :

early

Dominic :

I literally just watched this video. It was about a man who had a monopoly on ice. It’s called “the ice king “

J-Renn :

Also. Does it continue gaining speed every time it bounces off the piston causing it to continually heat?

Morio wa nzenza :

car engines

Sonii :

@🥰yg

Jace :

how compressed does air need to become a solid

J-Renn :

Why does it pick up speed after hitting the piston?

Isma S :

Is it imperative for the cylinder to remain unharned?