History of particle physics | Wikipedia audio article

This is an audio version of the Wikipedia Article:


00:01:09 1 Early development
00:02:35 2 From atoms to nucleons
00:02:45 2.1 First subatomic particles
00:03:59 2.2 Researching particles' interaction
00:04:54 2.3 Inside the atom
00:07:25 3 Revelations of quantum mechanics
00:10:34 4 Inventory
00:10:43 5 Modern nuclear physics
00:12:29 6 Physics goes to high energies
00:12:39 6.1 Strange particles and mysteries of the weak interaction
00:14:16 6.2 Deeper constituents of matter
00:16:13 6.3 Quarks, leptons, and four fundamental forces
00:19:27 6.4 Higgs boson
00:24:53 6.5 Further theoretical development
00:25:22 6.6 Further experimental development
00:25:53 7 See also



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"There is only one good, knowledge, and one evil, ignorance."
- Socrates



SUMMARY
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The idea that matter consists of smaller particles and that there exists a limited number of sorts of primary, smallest particles in nature has existed in natural philosophy at least since the 6th century BC. Such ideas gained physical credibility beginning in the 19th century, but the concept of "elementary particle" underwent some changes in its meaning: notably, modern physics no longer deems elementary particles indestructible. Even elementary particles can decay or collide destructively; they can cease to exist and create (other) particles in result.
Increasingly small particles have been discovered and researched: they include molecules, which are constructed of atoms, that in turn consist of subatomic particles, namely atomic nuclei and electrons. Many more types of subatomic particles have been found. Most such particles (but not electrons) were eventually found to be composed of even smaller particles such as quarks. Particle physics studies these smallest particles and their behaviour under high energies, whereas nuclear physics studies atomic nuclei and their (immediate) constituents: protons and neutrons.