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Single Idea 21208

[filed under theme 27. Natural Reality / B. Modern Physics / 4. Standard Model / c. Particle properties ]

Full Idea

The picture of a particle spinning like a top is sometime useful, but it is not consistent with the idea of the electron being point-like. In fact there is no analogy for spin in non-quantum physics.

Gist of Idea

Eletrons don't literally 'spin', because they are point-like

Source

Brian R. Martin (Particle Physics [2011], 02)

Book Ref

Martin, Brian R.: 'Particle Physics' [One World 2011], p.29


A Reaction

If we take this stuff literally then it blow traditional metaphysics to bits, because an electron has properties without being a substance. In what sense can an electron 'have' properties if it is a point? In interactions they cease to be points. Eh?

Related Idea

Idea 20460 Electrons are not waves, because their collisions are at a point, and not spread out [Rovelli]


The 14 ideas from Brian R. Martin

The strong force has a considerably greater range than the weak force [Martin,BR]
A 'field' is just a region to which points can be assigned in space and time [Martin,BR]
Many physicists believe particles have further structure, if only we could see it [Martin,BR]
Uncertainty allows very brief violations of energy conservation - even shorter with higher energies [Martin,BR]
The standard model combines theories of strong interaction, and electromagnetic and weak interaction [Martin,BR]
An 'element' is what cannot be decomposed by chemistry [Martin,BR]
Eletrons don't literally 'spin', because they are point-like [Martin,BR]
The Exclusion Principle says no two fermions occupy the same state, with the same numbers [Martin,BR]
The properties of a particle are determined by its quantum numbers and its mass [Martin,BR]
Electron emit and reabsorb photons, which create and reabsorb virtual electrons and positrons [Martin,BR]
Virtual particles surround any charged particle [Martin,BR]
If an expected reaction does not occur, that implies a conservation law [Martin,BR]
The Higgs field, unlike others, has a nozero value in a state without particles [Martin,BR]
String theory only has one free parameter (tension) - unlike the standard model with 19 [Martin,BR]