42:
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459:. Some of these effects have subsequently been explained in terms of existing phenomena, but some still remain poorly understood. He became professor of experimental physics at Vienna in 1920 and was known as a conscientious researcher and effective lecturer though single-minded to the point of absurdity. Albert Einstein was a frequent visitor to his home. Following the
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From the 1940s, Ehrenhaft's views became increasingly extreme and strident, eventually terminating his good friendship with Albert
Einstein. He found it impossible to obtain either research funding or even a sympathetic hearing in the
442:
Concerning his results about the elementary charge I do not believe in his numerical results, but I believe that nobody has a clear idea about the causes producing the apparent sub-electronic charges he found in careful
938:
542:
Ehrenhaft, Felix: "Ăśber die
Messung von Elektrizitätsmengen, die kleiner zu sein scheinen als die Ladung des einwertigen Wasserstoffions oder Elektrons und von dessen Vielfachen abweichen",
415:. They had two children, Johannes Leopold Friedrich, born on 10 October 1915, and Anna Maria Luise, born 19 February 1917. Both emigrated to the United States in the 1930s.
471:
From the mid-1930s, Ehrenhaft's thinking started to diverge strikingly from the mainstream of physics. He observed many genuinely surprising and reproducible
675:
Ehrenhaft, Felix: "On
Photophoresis, the true magnetic Charge and on helical Motion of Matter in Fields" (Review of his scientific work part 2, in German),
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Ehrenhaft, Felix: "On
Photophoresis, the true magnetic Charge and on helical Motion of Matter in Fields" (Review of his scientific work part 1, in German),
933:
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In 1946, he returned to the
University of Vienna where he held again his old position until his death. He became increasingly certain that he had observed
791:
522:
A review of his life work can be found in the
Austrian scientific journal "Acta physica Austriaca", and in the article by Rohatschek on
570:
Ehrenhaft, Felix: "Physical and
Astronomical information Concerning Particles of the Order of Magnitude of the Wavelength of Light",
725:
881:
923:
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833:, Proceedings of the Symposium on Aerosol Science, Verlag der Ă–sterreichischen Akademie der Wissenschaften, Vienna 2000
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Even while controversy raged on sub-electronic charges, Ehrenhaft made important and substantial contributions to
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479:. However, he was all too willing to adopt alternate theories to explain experiments that were beset with
41:
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405:
837:
Santos, G. M. (2010). "A debate on magnetic current: The troubled
Einstein–Ehrenhaft correspondence".
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17:
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314:
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owing to the unresolved nature of the debate. Controversy eventually subsided as more and more
431:
563:
Ehrenhaft, Felix: "Photophoresis and the
Influence upon it of Electric and Magnetic fields",
463:
in 1938, Ehrenhaft emigrated, first to
England, then to the U.S. where he became a citizen.
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Ehrenhaft, Felix: "Photophoresis and Its Interpretation by Electric and Magnetic Ions",
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Felix Ehrenhaft papers, 1914-1981 (bulk 1939-1957), Niels Bohr Library & Archives
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Ehrenhaft, Felix: "The Decomposition of Water by the So-Called Permanent Magnet...",
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Ehrenhaft, Felix: "Magnetolysis and the Electric Field Around the Magnetic Current",
496:
419:
220:
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Ehrenhaft, Felix: "Die longitudinale und transversale Elektro- und Magnetophorese",
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were swayed by Millikan's results but even as late as 1940, Albert Einstein wrote:
377:
177:
826:, Verlag der Ă–sterreichischen Akademie der Wissenschaften, Vienna 1982 (in German)
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of air made for a sterner test of the reality of atoms. Ehrenhaft was awarded the
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Ehrenhaft, Felix: "Decomposition of Matter Through the Magnet (Magnetolysis)",
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Ehrenhaft, Felix: "Stationary Electric and Magnetic Fields in Beams of Light",
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Ehrenhaft, Felix: "Continuation of Experiments with the Magnetic Current",
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Hans Rohatschek: "History of Photophoresis", in: O. Preining et al., ed.:
426:, claiming to have measured an electric charge less than that of a single
232:
476:
328: in this section. Unsourced material may be challenged and removed.
228:
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Jewish emigrants from Austria after the Anschluss to the United States
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Ehrenhaft, Felix and Banet, Leo: "Is there a true magnetism or not",
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212:
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732:. Vienna, Austria: Ă–sterreichischen Staatsarchiv: 22. Archived from
726:"Biografisches Handbuch österreichischer Physiker und Physikerinnen"
303:
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Ehrenhaft, Felix: "Further Facts Concerning the magnetic Current",
427:
388:, Ehrenhaft extended the work to make observations of particles of
758:(in German). LISE – Mädchen und naturwissenschaftlicher Unterricht
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Das optische Verhalten der Metallkolloide und deren Teilchengröße
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Ehrenhaft, Felix: "New Experiments about the Magnetic Current",
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and subsequently became involved in a bitter controversy with
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227:. He was known for his maverick and controversial style. His
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Biografien österreichischer (Physiker)innen: Eine Auswahl
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and other effects on the interaction of particles with
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industrialist. Ehrenhaft earned his doctorate from the
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Leopold Ehrenhaft and Louise Eggar, the daughter of a
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Ehrenhaft, Felix and Banet, Leo: "The Magnetic Ion",
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612:Ehrenhaft, Felix: "The Magnetic Current in Gases",
810:Der andere Physiker. Das Leben von Felix Ehrenhaft
882:Magic with Magnetism, Popular Science, June 1944
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724:Angetter, Daniela; Martischnig, Michael (2005).
376:, strongly supporting the atomic theory. Though
544:Kais. Akad. Wiss. Wien, Sitzber. math.-nat. Kl.
418:Ehrenhaft adapted his apparatus to measure the
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934:Austrian people of Hungarian-Jewish descent
839:British Journal for the History of Science
790:: CS1 maint: location missing publisher (
661:Ehrenhaft, Felix: "The Magnetic Current",
598:Ehrenhaft, Felix: "The Magnetic Current",
430:, Millikan being passed over for the 1920
40:
595:, vol 233 (March 1942), pp. 235–255.
344:Learn how and when to remove this message
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223:and to the optical properties of metal
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286:. He subsequently became assistant to
211:(24 April 1879 – 4 March 1952) was an
380:had made important demonstrations of
368:had both recently given accounts of
326:adding citations to reliable sources
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776:Degener, Hermann A.L., ed. (1935).
507:, the disassociation of liquids by
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780:(in German). Vienna. p. 345.
593:Journal of the Franklin Institute
572:Journal of the Franklin Institute
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822:Berta Karlik and Erich Schmid:
574:, vol 230: 381–393 (Sept. 1940)
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451:including the demonstration of
313:needs additional citations for
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812:. Wien, Graz 2003 (164 pages)
778:Wer ist's? Unsere Zeitgenossen
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411:In 1908, he married physicist
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877:Mathematics Genealogy Project
824:Franz S. Exner und sein Kreis
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665:154: 426–427 (Sept. 30, 1944)
215:physicist who contributed to
924:20th-century Austrian people
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609:96: 228–229 (Sept. 4, 1942).
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244:Austrian Academy of Sciences
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602:94: 232–233 (Sept 5, 1941).
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831:History of Aerosol Science
756:"Olga Ehrenhaft-Steindler"
406:Vienna Academy of Sciences
851:10.1017/S0007087410001299
705:Nobel Prize controversies
551:Das mikromagnetische Feld
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356:In 1907, the reality of
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219:, to the measurement of
128:Olga Ehrenhaft-Steindler
658:65: 287–289 (May 1944).
588:147: 25 (Jan. 4, 1941).
546:119 (IIa) 815–867, 1910
360:was still disputed but
231:was greatly admired by
949:Scientists from Vienna
677:Acta Physica Austriaca
670:Acta Physica Austriaca
445:
432:Nobel Prize in physics
259:Ehrenhaft was born in
526:(see sources below).
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888:Archival collections
322:improve this article
273:University of Vienna
171:University of Vienna
113:University of Vienna
929:Austrian physicists
630:63: 461-462 (1943).
581:. 8 (1941), 458–462
567:. 11 (1931),140–146
560:. 31, 478–485, 1930
483:and multifactorial
366:Marian Smoluchowski
183:Franz-Serafin Exner
161:Theoretical physics
808:Joseph Braunbeck:
700:List of physicists
695:Viktor Schauberger
672:4: 461–488 (1951).
549:Ehrenhaft, Felix:
535:Ehrenhaft, Felix:
497:magnetic monopoles
473:physical phenomena
221:electrical charges
27:Austrian physicist
944:Jewish physicists
679:5: 12–29 (1952).
644:65: 62–63 (1944).
501:magnetic currents
420:elementary charge
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189:Doctoral students
151:Scientific career
16:(Redirected from
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656:Physical Review
651:65: 256 (1944).
649:Physical Review
642:Physical Review
635:Physical Review
628:Physical Review
623:63: 216 (1943).
621:Physical Review
616:61: 733 (1942).
614:Physical Review
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443:investigations.
424:Robert Millikan
382:Brownian motion
370:Brownian motion
362:Albert Einstein
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240:Haitinger Prize
236:Paul Feyerabend
209:Felix Ehrenhaft
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143:Haitinger Prize
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109:Alma mater
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396:. The greater
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530:Publications
521:
517:electrolysis
511:rather than
505:magnetolysis
504:
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489:
481:interactions
470:
446:
441:
417:
410:
402:Lieben Prize
355:
340:
331:
320:Please help
315:verification
312:
294:Middle years
258:
208:
207:
167:Institutions
150:
138:Lieben Prize
82:(1952-03-04)
80:4 March 1952
914:1952 deaths
909:1879 births
467:Later years
255:Early years
233:philosopher
99:Nationality
903:Categories
762:2022-04-21
711:References
558:Phys. Zeit
477:perception
436:physicists
229:iconoclasm
58:1879-04-24
859:145476220
786:cite book
740:9 January
579:Phil. sci
565:Phil. mag
461:Anschluss
269:Hungarian
265:physician
250:Biography
246:in 1917.
18:Ehrenhaft
684:See also
428:electron
386:colloids
284:colloids
281:metallic
225:colloids
213:Austrian
103:Austrian
875:at the
607:Science
600:Science
553:, 1926.
539:, 1903.
509:magnets
449:physics
404:of the
374:liquids
277:optical
242:of the
119:, 1903)
92:Austria
857:
816:
663:Nature
586:Nature
515:as in
390:silver
261:Vienna
157:Fields
134:Awards
124:Spouse
88:Vienna
66:Vienna
855:S2CID
457:light
358:atoms
814:ISBN
792:link
742:2016
503:and
493:U.S.
364:and
145:1917
140:1910
77:Died
52:Born
847:doi
394:air
392:in
384:in
372:in
324:by
263:to
117:PhD
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
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