8 ideas
15312 | We get the idea of power by abstracting from ropes, magnets and electric shocks [Priestley] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
15311 | Attraction or repulsion are not imparted to matter, but actually constitute it [Priestley] |
17402 | Mendeleev saw three principles in nature: matter, force and spirit (where the latter seems to be essence) [Mendeleev, by Scerri] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |
17399 | Elements don't survive in compounds, but the 'substance' of the element does [Mendeleev] |
17400 | Mendeleev focused on abstract elements, not simple substances, so he got to their essence [Mendeleev, by Scerri] |
17401 | Mendeleev had a view of elements which allowed him to overlook some conflicting observations [Mendeleev] |