Leonhardt North / All Pervading Presence
Leonhardt North-All Pervading Presence

Leonhardt North - All Pervading Presence

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Leonhardt North All Pervading Presence
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This is an audio version of the Wikipedia Article:

00:00:44 1 Ancient and classical history
00:04:41 2 Middle Ages and the Renaissance
00:06:24 3 17th Century
00:10:17 4 18th century
00:10:26 4.1 Improving the electric machine
00:11:56 4.2 Electrics and non-electrics
00:12:57 4.3 Vitreous and resinous
00:14:11 4.4 Leyden jar
00:17:38 4.5 Late 18th century
00:29:33 5 19th century
00:29:42 5.1 Early 19th century
00:39:26 5.2 Faraday and Henry
00:46:20 5.3 Middle 19th century
00:55:30 5.4 Maxwell
01:01:58 5.5 End of the 19th century
01:09:24 5.6 Second Industrial Revolution
01:13:07 6 20th century
01:15:23 6.1 Lorentz and Poincaré
01:19:22 6.2 Einstein's iAnnus Mirabilis/i
01:21:53 6.3 Mid-20th century
01:29:42 6.4 Parity violation
01:30:46 6.5 Electroweak theory
01:33:16 7 21st century
01:33:25 7.1 Electromagnetic technologies
01:34:04 7.1.1 Magnetic resonance
01:34:44 7.1.2 Wireless electricity
01:35:52 7.2 Unified theories
01:36:41 7.3 Open problems
01:37:43 8 See also

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

The history of electromagnetic theory begins with ancient measures to understand atmospheric electricity, in particular lightning. People then had little understanding of electricity, and were unable to explain the phenomena. Scientific understanding into the nature of electricity grew throughout the eighteenth and nineteenth centuries through the work of researchers such as Ampère, Coulomb, Faraday and Maxwell.
In the 19th century it had become clear that electricity and magnetism were related, and their theories were unified: wherever charges are in motion electric current results, and magnetism is due to electric current. The source for electric field is electric charge, whereas that for magnetic field is electric current (charges in motion).
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