Charles's law demonstration - GIF

[Altair]

Charles's law demonstration. The law states that the volume of an ideal gas is directly proportional to the absolute temperature at constant pressure.




Previously:

Hydrodynamic levitation - GIF
Magnus effect - GIF
Meissner effect demonstration - GIF
Intermediate axis theorem - GIF and video
Euler's disk scientific educational toy - video

[BuffaloJohn]

and ... you can derive it from the Ideal Gas Law :: PV=nRT

Charles Law is V/T=k where V=Volume, T=Temperature, k=a constant

So it P is the same (atmospheric for the balloons) and n is the same (the balloons keep the gas in their enclosed volume) and R is a constant, we can rearrange...

For ambient temperature Va/Ta=nR/P

For cold temperature Vc/Tc=nR/P

so Va/Ta = Vc/Tc and that is also Va/Vc = Ta/Tc

[marksbug]

yup I coulda told you it shrinks up when it gets cold.

[nova_robotics]

yup I coulda told you it shrinks up when it gets cold.

I WAS IN THE POOL!

[Floradawg]

That's a cool demonstration It seems to me like the balloons would have become brittle and cracked open.

[odd one]

I worked at an optics company where I was able to "play" with liquid nitrogen for almost 10 yrs. I too was of the thought that things became fragile and shattered like glass when frozen to those temperatures. Ends up, that most things are pretty resilient. I was actually difficult to get regular items cold enough to cause them to shatter. I even had one of those small oranges submerged for almost 5 minutes. Then took it outside to try and shatter it on the ground. While the outside broke, the inside was still not solid, but rather a mush consistency. Pretty much lost interest in trying to deep freeze things after that. It was still fun to throw up a cup full of liquid nitrogen into the air at flying insects. They tend to die in mid flight. Of course this was all done wearing proper PPE.........

[that_other_guy]

I do remember a banana that that totally shattered when hit with a hammer....but don't recall the exposure time....

[Floradawg]

I do remember a banana that that totally shattered when hit with a hammer....but don't recall the exposure time....

I saw a demonstration where a rose was dipped in liquid nitrogen and it was crushed to bits in the guy's hand.