Brownian ratchet

 

The Brownian ratchet is a thought experiment about an apparent perpetual motion machine conceived by Richard Feynman[1] in a physics lecture at the California Institute of Technology on May 11, 1962 as an illustration of the laws of thermodynamics. The simple machine, consisting of a paddlewheel and a ratchet, appears to be an example of a Maxwell's demon, able to extract useful work from random fluctuations in a system at thermal equilibrium. Feynman's detailed analysis showed why it cannot actually do this.

Source

Device for extracting work from an external energy source, in apparent contradiction of the second law of thermodynamics

Source

 

 

 

 

 

 

 

 

 


___________________

Refer to this page:

___________________

Related Terms:

 

Note: If a company/institute/site doesn't want to present its own information in nanodic.com, it can sent one e-mail to info@nanodic.com.