9 votes

How did Stern or Gerlach, of Stern-Gerlach experiment, create individual silver atoms? How were they accelerated?

Atomic spectroscopy was very advanced 100 years ago (1920s) and we must appreciate their intelligence. If a metal like silver is being heated to the extent of boiling in high vacuum, all you get is ...
AChem's user avatar
  • 4,049
7 votes
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Historical origin of magnetic monopoles

The modern concept of magnetic monopole (as a real isolated charge) is due to Dirac in 1931, although Curie speculated about the possibility earlier. Even electric charges, as in particles, only ...
Conifold's user avatar
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7 votes
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Aristotelian explanation of magnetism

There is only an small account of Aristotle about magnetism in On the soul (see chapter I.2 and I.5). He discusses Thales of Miletus theory of the motion of lodestone. According to Aristotle, Thales ...
Mauricio's user avatar
  • 3,374
6 votes
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"Équation de Maxwell-Thomson"

In French, physical laws are not always named the same as in English (usually some Frenchman is added) Snell's law $\to$ loi de Snell-Descartes Gauss' theorem $\to$ théorème de Ostrogradski-Gauss WKB ...
Mauricio's user avatar
  • 3,374
6 votes
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What did Einstein learn in his university electricity and magnetism courses?

Einstein's physics teacher, H. F. Weber, apparently did not teach him any Helmholtz, as Einstein wrote in a 10 August 1899 letter to Mileva Marić: I returned the Helmholtz volume* and am at present ...
Geremia's user avatar
  • 5,289
4 votes

How did Stern or Gerlach, of Stern-Gerlach experiment, create individual silver atoms? How were they accelerated?

For the second part of the question: they weren't accelerated in any way other than by heating, they formed what is known as a thermal beam. Atoms in the gaseous phase are always moving, with an ...
llama's user avatar
  • 191
4 votes

Has anything survived of the work of alleged science journalist and medical doctor 'Adolph Klein', allegedly born 1829 in Merseburg?

Following the link given in Francois Ziegler's answer I found a Dr. Klein among the signers of a parliamentary petition calling for the modification of section 175 of the German Criminal Code: ...
njuffa's user avatar
  • 6,506
4 votes

Has anything survived of the work of alleged science journalist and medical doctor 'Adolph Klein', allegedly born 1829 in Merseburg?

The entry is wholly drawn from an ostensibly autobiographical portrait inserted in the “humorvoll” who’s who Das geistige Berlin (1897, p. 245; reprint): Klein, Ad., Dr. med. und phil., geboren zu ...
Francois Ziegler's user avatar
4 votes
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Who determined whether surfaces between magnetic poles attract/repel or whether the poles' volumes do?

in 1785, the French physicist Charles-Augustin de Coulomb published his first three reports of electricity and magnetism where he stated his law. The conclusion that there were two types of magnetism, ...
drvrm's user avatar
  • 323
3 votes
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What was taught in 19th century European electricity and/or magnetism courses?

Some data: The plan for the famous 1867 textbook Treatise on Natural Philosophy by William Thomson (Professor of Natural Philosophy at the University of Glasgow for over 50 years) and Peter Guthrie ...
Mauro ALLEGRANZA's user avatar
3 votes
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Why is Maxwell and not Ampère credited for unifying electricity and magnetism?

On my opinion, the following citation from Poincare answers this question: “At the time, when Maxwell initiated his studies, the laws of electrodynamics adopted before him explained all known ...
Alexandre Eremenko's user avatar
3 votes

Who determined whether surfaces between magnetic poles attract/repel or whether the poles' volumes do?

Pierre de Maricourt (Peter the Pilgrim / Petrus Peregrinus) showed that one cannot isolate a magnetic pole because when a magnetic is divided, the two halves each have a north and south pole: See ...
Geremia's user avatar
  • 5,289
2 votes
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First occurrence of the Langevin function in scientific literature

Best I could determine after searching for a couple of hours, this function was first introduced in the following publication, a scan of which is made available by the Bibliothèque nationale de France:...
njuffa's user avatar
  • 6,506
2 votes

Why is Maxwell and not Ampère credited for unifying electricity and magnetism?

There are two reasons: As explained by Alexandre Eremenko, the laws of electrodynamics before Maxwell (like Ampere's force law, Neumann's law of induction, Weber's law, etc.) explained all the known ...
Joe's user avatar
  • 181
1 vote

History of Magnetism before the Hubbard model

I'm certainly no expert on the history of these models, and can only answer from my working knowledge about the topic. (In particular, I'm not quite the right person to give a detailed comparison with ...
Jules Lamers's user avatar
1 vote

What was taught in 19th century European electricity and/or magnetism courses?

These 2 volumes discuss research and academic courses in physics in the 19th century at German universities: Christa Jungnickel and Russell McCormmach. Intellectual Mastery of Nature. Theoretical ...
Margaret Friedland's user avatar
1 vote

What did Einstein learn in his university electricity and magnetism courses?

According to one biography I read, Einstein didn't learn much from his university courses in Electromagnetism. Presumably this was simply because he was already looking through the works of Maxwell, ...
Mozibur Ullah's user avatar

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