5 ideas
8120 | Objects can be beautiful which express nothing at all, such as the rainbow [Herbart, by Tolstoy] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
20646 | Helmholtz used 'energy' to mathematically link heat, light, electricity and magnetism [Helmholtz, by Watson] |
20973 | All forces conserve the sum of kinetic and potential energy [Helmholtz, by Papineau] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |