Armand fizeau y leon foucault biography
Foucault pendulum...
Armand fizeau y leon foucault biography
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
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 meters aw