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in 1676. He used a beam of light reflected from a mirror 8633 meters away. The beam passed through the gaps between the teeth of a rapidly rotating wheel with 720 teeth. The speed of the wheel was increased until, at 12.6 rotations per second, the returning light hit the next tooth and could not
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inscribed on the frieze below the first platform of the Eiffel Tower, all of whom were French scientists, mathematicians, engineers, or industrialists from the hundred years before the tower's public opening for the
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botanical family. His earliest work was concerned with improvements in photographic processes. Following suggestions by
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In 1849, Fizeau calculated a value for the speed of light to a better precision than the previous value determined by
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1414:
1330:
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486:
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Houdas, Y. (April 1991). "Doppler, Buys-Ballot, Fizeau. Historical note on the discovery of the
Doppler's effect".
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1247:(5). Rochester, N.Y.: International Museum of Photography at George Eastman House Inc.: 3â4. Archived from
1082:.) Fizeau made the first suggestion in 1864 that the "speed of a light wave be used as a length standard".
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of solids and applied the phenomenon of interference of light to the measurement of the dilatations of
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One or more of the preceding sentences incorporates text from a publication now in the
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be seen. At 25.2 rotations per second, the light was again visible. This gives a result of
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1139:. Of the 72, Fizeau is the only one who was still alive when the tower was opened.
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1103:(sometimes termed a "condenser") as a means to increase the efficiency of the
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1466:"Whose are the 72 names inscribed on the Eiffel Tower and why are they there"
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The Life and
Science of Leon Foucault: The Man Who Proved the Earth Rotates
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Fizeau was born in Paris to Louis and
Beatrice Fizeau. He married into the
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1302:. Vol. 10 (11th ed.). Cambridge University Press. p. 452.
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Solbert, Oscar N.; Newhall, Beaumont; Card, James g., eds. (May 1952).
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and Fizeau collaborated in a series of investigations on the
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Members of the Royal
Society of Sciences in Uppsala
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1380:. New York: McGraw Publishing Co. pp. 52â55.
1080:Fizeau's measurement of the speed of light in air
108:Fizeau's measurement of the speed of light in air
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1457:
1378:Maxwell's Theory and Wireless Telegraphy: Part 1
1321:. New York City: Simon and Schuster. pp.
1026:in moving water in an experiment known as the
1054:of light and heat. In 1848, he predicted the
981:
1197:The Biographical Encyclopedia of Astronomers
1092:Fizeau was involved in the discovery of the
1074:, which is within 5% of the correct value (
1313:Hellemans, Alexander; Bryan Bunch (1988).
1072:2 x 8633m x 25.2 x 720/s = 313,274,304 m/s
988:
974:
192:
1602:Members of the French Academy of Sciences
1347:"Fizeau's experiment: The original paper"
1087:relative speeds of light in air and water
1396:
1374:"Experiments of MM. Fizeau and Gounelle"
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1546:MacTutor History of Mathematics Archive
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1439:Annales de cardiologie et d'angéiologie
1099:In 1853, Fizeau described the use of a
737:Electromagnetism and special relativity
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1436:
1193:
1402:
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1013:
757:Maxwell equations in curved spacetime
1597:Foreign members of the Royal Society
1234:"Hippolyte-Louis Fizeau (1819â1896)"
1495:Gazetteer of Planetary Nomenclature
13:
14:
1618:
1516:
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1464:Lemoine, Bertrand (2020-06-18).
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1165:Michelson stellar interferometer
29:
1541:"Armand-Hippolyte-Louis Fizeau"
1499:United States Geological Survey
1483:
1472:from the original on 2023-01-29
1430:
1409:. Cambridge University Press.
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1306:
1294:Fizeau, Armand Hippolyte Louis
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1123:in 1878. He died in France at
1:
1393:part 1 Resnick/Halliday p. 5.
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1076:299,792,458 meters per second
1001:Armand Hippolyte Louis Fizeau
762:Relativistic electromagnetism
1403:Tobin, William John (2003).
1119:in 1860 and a member of the
1115:. He became a member of the
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1015:[aÊmÉÌipÉlitlwifizo]
35:Hippolyte Fizeau in 1883 by
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117:Astronomical interferometry
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487:LiĂ©nardâWiechert potential
1317:The Timetables of Science
752:Mathematical descriptions
462:Electromagnetic radiation
452:Electromagnetic induction
392:Magnetic vector potential
387:Magnetic scalar potential
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1551:University of St Andrews
1107:. Later, he studied the
1085:In 1850 he measured the
1299:EncyclopĂŠdia Britannica
1194:Hockey, Thomas (2009).
1130:"Fizeau" is one of the
302:Electrostatic induction
297:Electrostatic discharge
1127:on 18 September 1896.
732:Electromagnetic tensor
1582:Scientists from Paris
1372:Poincaré, H. (1904).
1121:Bureau des Longitudes
1117:Académie des Sciences
1060:electromagnetic waves
1011:French pronunciation:
725:Covariant formulation
517:Synchrotron radiation
457:Electromagnetic pulse
447:Electromagnetic field
113:DopplerâFizeau effect
99:Fizeau interferometer
1537:Robertson, Edmund F.
1531:at Wikimedia Commons
1150:is named after him.
1148:far side of the Moon
767:Stressâenergy tensor
692:Reluctance (complex)
437:Displacement current
1535:O'Connor, John J.;
1351:Skulls in the Stars
1202:Springer Publishing
682:Magnetomotive force
567:Electromotive force
537:Alternating current
472:Jefimenko equations
432:Cyclotron radiation
125:Optical dilatometer
1592:Optical physicists
530:Electrical network
367:Gauss magnetic law
332:Static electricity
292:Electric potential
1587:French physicists
1527:Media related to
1211:978-0-387-31022-0
1137:1889 World's Fair
1109:thermal expansion
1028:Fizeau experiment
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612:Resonant cavities
502:Maxwell equations
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66:18 September 1896
48:23 September 1819
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492:London equations
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327:Potential energy
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1502:. Retrieved
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1474:. Retrieved
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442:Eddy current
402:Permeability
322:Polarization
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103:Fizeau wheel
37:EugĂšne Pirou
1577:1896 deaths
1572:1819 births
1142:The crater
1056:redshifting
712:Transformer
542:Capacitance
467:Faraday law
262:Coulomb law
204:Electricity
83:Nationality
1566:Categories
1476:2023-05-10
1217:August 22,
1181:References
1040:de Jussieu
779:Scientists
627:Waveguides
607:Resistance
577:Inductance
357:AmpĂšre law
1101:capacitor
1067:Ole RĂžmer
1034:Biography
1020:physicist
935:Steinmetz
865:Kirchhoff
850:Jefimenko
845:Hopkinson
830:Helmholtz
825:Heaviside
687:Permeance
572:Impedance
312:Insulator
307:Gauss law
257:Conductor
234:Phenomena
229:Textbooks
209:Magnetism
121:Capacitor
68:(aged 76)
1470:Archived
1422:10 March
1154:See also
1132:72 names
1125:Venteuil
1113:crystals
1078:). (See
960:Wiechert
915:Poynting
805:Einstein
652:DC motor
647:AC motor
482:Lenz law
267:Electret
129:Redshift
72:Venteuil
1451:2053764
1391:Physics
1357:9 March
1287::
1258:22 June
1146:on the
945:Thomson
920:Ritchie
910:Poisson
895:Neumann
890:Maxwell
885:Lorentz
880:Liénard
810:Faraday
795:Coulomb
622:Voltage
597:Ohm law
219:History
166:Physics
1449:
1413:
1329:
1281:
1208:
1144:Fizeau
930:Singer
925:Savart
905:Ărsted
870:Larmor
860:Kelvin
815:Fizeau
785:AmpĂšre
707:Stator
214:Optics
162:Fields
149:(1875)
142:(1866)
135:Awards
86:French
76:France
56:France
1252:(PDF)
1237:(PDF)
1009:MIF (
955:Weber
950:Volta
940:Tesla
855:Joule
840:Hertz
835:Henry
820:Gauss
702:Rotor
52:Paris
1506:2018
1447:PMID
1424:2023
1411:ISBN
1359:2023
1327:ISBN
1260:2014
1219:2012
1206:ISBN
1007:FRSE
875:Lenz
800:Davy
790:Biot
63:Died
45:Born
1323:317
1296:".
1058:of
1004:FRS
900:Ohm
146:FRS
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