Combining Texts

All the ideas for 'Two Problems of Epistemology', 'Demonstratives' and 'The Particle Zoo'

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23 ideas

14. Science / A. Basis of Science / 6. Falsification
18284 Particulars can be verified or falsified, but general statements can only be falsified (conclusively) [Popper]
19. Language / C. Assigning Meanings / 10. Two-Dimensional Semantics
14894 Indexicals have a 'character' (the standing meaning), and a 'content' (truth-conditions for one context) [Kaplan, by Macià/Garcia-Carpentiro]
14700 'Content' gives the standard modal profile, and 'character' gives rules for a context [Kaplan, by Schroeter]
27. Natural Reality / A. Classical Physics / 1. Mechanics / c. Forces
21181 Relativity and Quantum theory give very different accounts of forces [Hesketh]
27. Natural Reality / A. Classical Physics / 2. Thermodynamics / a. Energy
21183 Thermodynamics introduced work and entropy, to understand steam engine efficiency [Hesketh]
27. Natural Reality / B. Modern Physics / 2. Electrodynamics / a. Electrodynamics
21199 Spinning electric charge produces magnetism, so all fermions are magnets [Hesketh]
21191 Photons are B and W° bosons, linked by the Higgs mechanism [Hesketh]
27. Natural Reality / B. Modern Physics / 2. Electrodynamics / c. Electrons
21189 Electrons may have smaller components, bound by a new force [Hesketh]
21180 Electrons are fundamental and are not made of anything; they are properties without size [Hesketh]
27. Natural Reality / B. Modern Physics / 2. Electrodynamics / d. Quantum mechanics
21182 Quantum mechanics is our only theory, and is very precise, and repeatedly confirmed [Hesketh]
21184 Physics was rewritten to explain stable electron orbits [Hesketh]
21187 Virtual particles can't be measured, and can ignore the laws of physics [Hesketh]
27. Natural Reality / B. Modern Physics / 3. Chromodynamics / a. Chromodynamics
21185 Colour charge is positive or negative, and also has red, green or blue direction [Hesketh]
27. Natural Reality / B. Modern Physics / 4. Standard Model / b. Standard model
21194 The Standard Model omits gravity, because there are no particles involved [Hesketh]
21195 In Supersymmetry the Standard Model simplifies at high energies [Hesketh]
21197 Standard Model forces are one- two- and three-dimensional [Hesketh]
27. Natural Reality / B. Modern Physics / 4. Standard Model / c. Particle properties
21188 Quarks and leptons have a weak charge, for the weak force [Hesketh]
27. Natural Reality / B. Modern Physics / 4. Standard Model / e. Protons
21186 Quarks rush wildly around in protons, restrained by the gluons [Hesketh]
27. Natural Reality / B. Modern Physics / 4. Standard Model / f. Neutrinos
21192 Neutrinos only interact with the weak force, but decays produce them in huge numbers [Hesketh]
27. Natural Reality / B. Modern Physics / 5. Unified Models / c. Supersymmetry
21196 To combine the forces, they must all be the same strength at some point [Hesketh]
27. Natural Reality / C. Space / 5. Relational Space
21190 'Space' in physics just means location [Hesketh]
27. Natural Reality / E. Cosmology / 8. Dark Matter
21193 The universe is 68% dark energy, 27% dark matter, 5% regular matter [Hesketh]
27. Natural Reality / E. Cosmology / 9. Fine-Tuned Universe
21198 If a cosmic theory relies a great deal on fine-tuning basic values, it is probably wrong [Hesketh]