4 ideas
20740 | Maybe humans are distinguished from other animals by feelings, rather than reason [Unamuno] |
16745 | No one even knows the nature and properties of a fly - why it has that colour, or so many feet [Bacon,R] |
20972 | Joule showed that energy converts to heat, and heat to energy [Joule, by Papineau] |
20645 | Heat is a state of vibration, not a substance [Joule] |