4 ms·
I agree but for a different reason. It seems obvious that Maxwell's demon would itself use energy, thereby paying for the "decreased entropy" with this energy.
by libeclipse 5y ago
I agree but for a different reason. It seems obvious that Maxwell's demon would itself use energy, thereby paying for the "decreased entropy" with this energy.
This is essentially the same as:
> The second vital piece of the puzzle was the principle of erasure. In 1961, the German American physicist Rolf Landauer showed that any logically irreversible computation, such as the erasing of information from a memory, would result in a minimal nonzero amount of work converted into heat dumped into the environment, and a corresponding rise in entropy.
- tomcam 5y agoI wish someone would address your point. This leapt to my mind immediately but I don’t understand enough about the physics to go any further with it.
- deleted 5y ago[deleted]
- exporectomy 5y agoWhy is it obvious that Maxwell's demon would use energy? It could be a frictionless spring-loaded door with latches to hold it open or closed and it bounces between states when it's unlatched.
- cambalache 5y agoHow you will "tell" the door when to unlatch itself without expending energy?
- TchoBeer 5y agoiirc Laundauer assumes the second law, so it's not a good refutation here.