4 ideas
23367 | Even pointing a finger should only be done for a reason [Epictetus] |
3448 | Do new ideas increase the weight of the brain? [Dance] |
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] |