Timeline for Feynman's argument on machine limits: how are the machines reset?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 13, 2016 at 19:29 | vote | accept | bostonquad | ||
| Jun 8, 2016 at 15:47 | comment | added | bostonquad | Ah, thanks. I was coming to that conclusion myself when 2 paragraphs later, Feynman modifies the machine and "resets" it without weights. Or, we can think of the machines as having state, but it takes no energy to change their state as long as the weights are in the ratio of 3:1 (which they would be if the weights are 0 and 0). | |
| Jun 8, 2016 at 15:26 | comment | added | John Rennie | @bostonquad: The machines are idealised devices that don't have a state. Trying to imagine a real device like a lever or some rope and pulley device isn't appropriate. Any such real device will have its own limitations that are in addition to the basic principle of energy conservation. | |
| Jun 8, 2016 at 6:15 | history | answered | John Rennie | CC BY-SA 3.0 |