Victor Crémieu

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Victor Crémieu (* 1872 in Avignon ; † 1935 ) was a French physicist.

Crémieu studied at the Sorbonne , where he received his doctorate in 1901 under Gabriel Lippmann . He became known for repeating (in a modified form) Henry Rowland's experiment on the magnetic effects of a rotating, charged disk. In contrast to Rowland, he found no such effects. He had previously investigated the phenomenon theoretically (at the suggestion of Lippmann for his dissertation), but, unlike Lorentz, was unable to reproduce the derivation of the Rowland effect from electron theory. This was mentioned, for example, by Henri Poincaré at the end of his book Science and Hypothesis in 1902 as an experiment that at that time thoroughly disturbed the calm with regard to Lorentz's electron theory . At times he corresponded with Poincaré.

Crémieu's experiments were controversial at the time. The leading English theorist of electrodynamics Joseph Larmor , who saw Rowland's experiment as proof of the particle character of the charge carriers, suggested HL Wilson to write a criticism of the experiment. Poincaré, in turn, intervened in the debate on Crémieu's side. However, Crémieu also saw Maxwell's theory refuted by the experiment (existence of displacement currents), which Poincaré did not share. At Poincaré's urging, other experimental physicists in France also took up the problem, with varying results. Rowland himself suggested in the USA Harold Pender to repeat his experiment with higher precision, where he confirmed Rowland. Eventually Poincaré organized a repetition of both experiments side by side in Edmond Bouty's laboratory by Pender and Crémieu. Rowland was confirmed. Crémieu's negative results were attributed to a dielectric coating on panes and equipment.

He later made precision experiments on gravitational force, but these remained inconclusive, and then worked in industry. He was with Paul Langevin friends

Fonts

In addition to the writings mentioned in the footnotes:

  • with L. Malclès: Recherches sur les diélectriques solides. Comptes rendus Acad. Sci., Vol. 139, 1904, pp. 790-792, 969-972
  • with H. Pender: On the magnetic effect of electric convection. Philosophical Magazine, Volume 6, 1903, pp. 442-464
  • Attraction observée entre gouttes liquides suspendues dans un liquide de même densité, Comptes rendus Acad. Sci., Vol. 140, 1905, pp. 80-83.
  • Dispositif auto-amortisseur applicable aux mouvements pendulaire et oscillatoire. Comptes rendus Acad. Sci., Vol. 140, 1905, pp. 1029-1031
  • Recherches expérimentales sur la gravitation, Bulletin des séances de la Société française de physique, 1905, pp. 485–499.
  • Research on gravitation. Comptes rendus Acad. Sci., Vol. 141, 1905, pp. 653-655.
  • Research on gravitation. Comptes rendus Acad. Sci., Vol. 143, 1906, pp. 887-889
  • Sur une erhur systématique qui limit la précision de l'expérience de Cavendish, Comptes rendus Acad. Sci., Vol. 150, 1910, pp. 863-866.

Web links

Individual evidence

  1. ↑ Crémieu, Comptes Rendus Acad. Sci., Vol. 131, 1900, pp. 578, 797
  2. ↑ Poincaré, Wissenschaft und Hypothese, Teubner 1904, p. 243 (French original 1902)
personal data
SURNAME Crémieu, Victor
BRIEF DESCRIPTION French physicist
DATE OF BIRTH 1872
PLACE OF BIRTH Avignon
DATE OF DEATH 1935