What is the Third Law of Thermodynamics?

Valeska Ting explains the relationship between entropy, temperature and absolute zero.

Valeska Ting completes her series of films explaining the four laws of thermodynamics. The third law states that entropy decreases to zero as temperature approaches absolute zero. But what does this mean?

Valeska tackles the theoretical concept of absolute zero, explains the nature of a perfect crystal, and uses a fire extinguisher to illustrate the relationship between entropy and temperature.

[NA-dfwh]

Mom, it's not cause of me my room is so messy, it's entropy 😂😂😂

[javadkhakbaz]

Thank you for such good explanation of the third law in such a short period of time. In the world dominated by short attention span, this clip in just over 3 minutes does the job. Good background music too. Thank you, from San Jose, California.

[LammaDrama]

The third law states that you can measure the total entropy of a system, not only the variation of entropy, different from the total energy.

[adankseasonads]

Can you please make longer video's!? Love them so much, but always feel like I haven't had enough when they end.

[Avl]

0:16 degree is not used when you measure temperature on Kelvin scale as it is an an absolute scale..

[maxximumb]

Did you say one degree Kelvin? I thought Kelvins where the units and it should have been one Kelvin.

[engineerspot-umangmishra]

Totally understood third law of thermodynamics thanks

[melodious]

I going to learn thermodynamics from comments section

[mydogwasbrian]

I thought the third law was to protect your own existence as long as such protection does not conflict with the First or Second Law.

[sunnysideupp]

So the third law of thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero. But if I were to put that in my own words would it be accurate to say that the third law of thermodynamics states that the particles stop moving as the system reaches absolute zero?

[nmarbletoe]

the entropy of a perfect crystal goes to zero as the temp goes to zero.
so the universe started as a perfect, cold crystal

[LECityLECLEC]

this is a well done video excellent music! :D

[vinm]

When she says "The lowest possible entropy can only be achieved in a crystal"
I think she means enthalpy.
Entropy is just a statistical measure of the possible states a system can be in.
It is a very deep concept like "evolution".
Evolution doesn't just apply to biology on Earth. It applies to any reproductive system
capable of modification/mutation in an environment.
Likewise Entropy applies to any system that can develop into a number of states :
the Universe/Universes, computer models, Information, language etc
It's a very deep concept not just a parameter in Thermodynamics.

[jqpentw]

About 2:38 can’t an entropy not be decreased nor reduced?

[jaskaransinghgill]

how dry ice is formed in the last, ,,, explanation please???

[therickson]

So...the third law of thermodynamics is why she's wearing a scarf?

[joel]

anyone tells me what's going on with the crystal at 0:35? those expanding squares look like superfuild.

[mattibboss]

i have heard that temperatures below absolute zero are hot, can smbd explain how it's possible?

[jramu]

you have taken good examples.. thank you valuable information

[paschalconneely]

I thought it was the case that uncertainty principal made it impossible to reach absolute zero.