13 ideas
| 17818 | How many? must first partition an aggregate into sets, and then logic fixes its number [Yourgrau] |
| 17822 | Nothing is 'intrinsically' numbered [Yourgrau] |
| 17817 | Defining 'three' as the principle of collection or property of threes explains set theory definitions [Yourgrau] |
| 17815 | We can't use sets as foundations for mathematics if we must await results from the upper reaches [Yourgrau] |
| 17821 | You can ask all sorts of numerical questions about any one given set [Yourgrau] |
| 20239 | Unlike us, the early Greeks thought envy was a good thing, and hope a bad thing [Hesiod, by Nietzsche] |
| 24162 | Planck introduced the idea that energy can be quantized [Baggott] |
| 21731 | Fields can be 'scalar', or 'vector', or 'tensor', or 'spinor' [Baggott] |
| 21730 | A 'field' is a property with a magnitude, distributed across all of space and time [Baggott] |
| 24163 | Free electrons have clouds of virtual particles, arising from field interaction [Baggott] |
| 24161 | Thermodynamics sees nature as a continuous flow of energy, as radiation and as substance [Baggott] |
| 21732 | The current standard model requires 61 particles [Baggott] |
| 24160 | Particle measurements don't seem to reflect their reality [Baggott] |