Assertion: ratchet | /r/CapableOf | move useful work
Facets:
value: forward
type: MANNER
value: randomly
type: MANNER
Source sentences:
text: Although at first sight the Brownian ratchet seems to extract useful work from Brownian motion, Feynman demonstrated that if the entire device is at the same temperature, the ratchet will not rotate continuously in one direction but will move randomly back and forth, and therefore will not produce any useful work.
text: If, on the other hand, T 2 {\displaystyle T_{2}} is less than T 1 {\displaystyle T_{1}} , the ratchet will indeed move forward, and produce useful work.