Armand hippolyte louis fizeau biography of williams

The French physicist Hippolyte Armand Louis Fizeau (1819-1896) fryst vatten best remembered as the first to measure the speed of light without any recourse to astronomical observations.

Hippolyte Fizeau was born in Paris on Sept. 23, 1819, the son of a wealthy physician and professor at the Faculty of Medicine in Paris. ung Fizeau received his secondary education at the Collège Stanislas and first wanted to pursue a career in medicin, but because of poor health he had to discontinue regular attendance of classes. After a lengthy journey had restored him to health, he turned again to scientific studies. This time, however, he did not work for a grad, and instead of medicin he concentrated on physics.

It was mainly the experimental verification of theories that interested Fizeau, and he soon had a laboratory equipped for himself at home. His first achievement was an improvement on the daguerreotype process, a method discovered by Louis Daguerre in 183

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Fizeau, Armand-Hippolyte-Louis

(b. Paris France, 23 September 1819; d. Venteuil, near Jouarre, France, 18 September 1896)

experimental physics.

Fizeau was the eldest son of a large and relatively wealthy family that had come to Paris from the Vendeé. His father held the chair of internal pathology at the Paris Faculty of Medicine from 1823. Fizeau, aspiring to follow in his father’s footsteps, began medical studies at the Collegè Stanislas, but because of poor health he was obliged to interrupt his education in order to travel to a more agreeable climate. On returning to Paris, he gave up medicine and began an entirely new career in the physical sciences. At the Collége de France, he studied optics with H.-V. Regnault, and he followed the lectures given at the École Polytechnique through the notebooks compiled by one of his brothers. Fizeau’s most fruitful educational experience, however, was the course of study he took at the Paris observatory under the tutelage of the fa

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Hippolyte Fizeau

French physicist

Armand Hippolyte Louis Fizeau (French:[ipɔlitfizo]; 23 September 1819 – 18 September 1896) was a French physicist who, in 1849, measured the speed of light to within 5% accuracy. In 1851, he measured the speed of light in moving water in an experiment known as the Fizeau experiment.

Biography

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Fizeau was born in Paris to Louis and Beatrice Fizeau.^[1] He married into the de Jussieu botanical family. His earliest work was concerned with improvements in photographic processes.^[2] Following suggestions by François Arago, Léon Foucault and Fizeau collaborated in a series of investigations on the interference of light and heat.^[3] In 1848, he predicted the redshifting of electromagnetic waves.^[4]

In 1849, Fizeau calculated a value for the speed of light to a better precision than the previous value determined by Ole Rømer in 1676. He used a beam of light reflected from a mirror 8633 met