What is done
by what is called myself is, I feel,
done by something greater
than myself in me.
Maxwell’s Demon: A thought experiment that seems to defy the 2nd Law of Thermodynamics.
The second law of thermodynamics tells us that the entropy of the universe is always increasing. So the change in entropy for the universe, when it undergoes any process, is always greater than or equal to 0. And we showed in the previous video that it has a lot of implications. Regardless of how you define your entropy, whether you define entropy as equal to some constant times the natural log of the number of states your system could take on, or whether you define change in entropy to be equal to the heat added to the system divided by the temperature at which it is added, either of these descriptions, combined with our second law of thermodynamics tell us things like, when you have a hot body next to a cold body– so say this is T1, and then I have T2 over here– that heat will flow from the hot body to the cold body.
And we showed that mathematically in the last video. That heat will flow in this direction. Now, one of the commenters on the last video said, hey, could you cover Maxwell’s demon? And I will. Because it’s an interesting thought experiment that seems to defy this principle. It seems to defy the second law of thermodynamics. And it has a very tantalizing name, Maxwell’s demon. Apparently, though, it was not Maxwell who called it a demon. It was Kelvin.
In the philosophy of thermal and statistical physics, Maxwell’s demon is a thought experiment created by the physicist James Clerk Maxwell in which he suggested how the second law of thermodynamics might hypothetically be violated. In the thought experiment, a demon controls a small door between two chambers of gas. As individual gas molecules approach the door, the demon quickly opens and shuts the door so that fast molecules pass into the other chamber, while slow molecules remain in the first chamber. Because faster molecules are hotter, the demon’s behavior causes one chamber to warm up as the other cools, thus decreasing entropy and violating the second law of thermodynamics
Have a great day out there and spread your warm and loving personality to all the places that you go to. Let us use Maxwell´s second law of thermodynamics. Let the warm bodies bring heat to all the cold bodies. No Maxwell´s demon does not exist. We will not seperate the warm people from the cold. We all need to be together and feel the love from each other.
There is something greater inside of me…
Love, Health And Wisdom