Well... to grab a Brownian movement at temporary violation would be satisfying :-). (sorry, not polite response, but I can't resist)
A Brownian particle that is temporarily at high speed (or stopped): is it in equilibrium with the surrounding? Can we discuss it in context of 2nd law, or is it...
Perhaps the gap above the wedge is a bit misleading in the drawing. Green is a spring that closes the gap.
There is no gravity.
The top sketch is supposed to be a linear version of freeweel:
This is possibly more intuitive, but a little difficult to handle mathematically .
One more
Nevertheless, I try to simplify.
I think, if we stick with kinetic theory, and if we can control Brownian particles at fluctuations level, we can theoretically earn energy. Help!
Supposed we make a simplified simulation: it will be a system with deterministic, Newtonian behavior, just...
Thank you very much for your attention, DrClaude.
But Feynman argues: "the wheel will get hotter and hotter." " ... turn the axle backwards. And as things get hotter, this happens more often."
Obviously, his idea is, that with every jump of pawl against the gear the potential energy of pawls...
Hi all.
Feynman writes:
https://www.feynmanlectures.caltech.edu/I_46.html
https://en.wikipedia.org/wiki/Brownian_ratchet
Does emerging of temperature differences supposedly violate the 2nd law? (yes?)
As soon as a temperature difference occurs, e.g. a Carnot process could work...