31 ideas
| 13165 | Geometrical proofs do not show causes, as when we prove a triangle contains two right angles [Proclus] |
| 9758 | To make sense of personal identity, focus on agency rather than experience [Korsgaard] |
| 9757 | A person viewed as an agent makes no sense without its own future [Korsgaard] |
| 9569 | The origin of geometry started in sensation, then moved to calculation, and then to reason [Proclus] |
| 9759 | Theory of action focuses on explanation and prediction; practical action on justification and choice [Korsgaard] |
| 18678 | Maybe final value rests on the extrinsic property of being valued by a rational agent [Korsgaard, by Orsi] |
| 18225 | If we can't reason about value, we can reason about the unconditional source of value [Korsgaard] |
| 18228 | An end can't be an ultimate value just because it is useless! [Korsgaard] |
| 9760 | Self-concern may be a source of pain, or a lack of self-respect, or a failure of responsibility [Korsgaard] |
| 18224 | Goodness is given either by a psychological state, or the attribution of a property [Korsgaard] |
| 9761 | Personal concern for one's own self widens out into concern for the impersonal [Korsgaard] |
| 18233 | Contemplation is final because it is an activity which is not a process [Korsgaard] |
| 18226 | For Aristotle, contemplation consists purely of understanding [Korsgaard] |
| 20624 | Work degrades into heat, but not vice versa [Close] |
| 20623 | First Law: energy can change form, but is conserved overall [Close] |
| 20625 | Third Law: total order and minimum entropy only occurs at absolute zero [Close] |
| 20628 | The electric and magnetic are tightly linked, and viewed according to your own motion [Close] |
| 20622 | All motions are relative and ambiguous, but acceleration is the same in all inertial frames [Close] |
| 20635 | The general relativity equations relate curvature in space-time to density of energy-momentum [Close] |
| 20627 | Electric fields have four basic laws (two by Gauss, one by Ampère, one by Faraday) [Close] |
| 20630 | Light isn't just emitted in quanta called photons - light is photons [Close] |
| 20637 | In general relativity the energy and momentum of photons subjects them to gravity [Close] |
| 20629 | Electro-magnetic waves travel at light speed - so light is electromagnetism! [Close] |
| 20632 | In QED, electro-magnetism exists in quantum states, emitting and absorbing electrons [Close] |
| 20642 | Photon exchange drives the electro-magnetic force [Close] |
| 20639 | Quantum fields contain continual rapid creation and disappearance [Close] |
| 20631 | Dirac showed how electrons conform to special relativity [Close] |
| 20641 | Electrons get their mass by interaction with the Higgs field [Close] |
| 20626 | Modern theories of matter are grounded in heat, work and energy [Close] |
| 20633 | The Higgs field is an electroweak plasma - but we don't know what stuff it consists of [Close] |
| 20640 | Space-time is indeterminate foam over short distances [Close] |