Historical person
Historical biography and chronological timeline for Hippolyte Fizeau, based on 1 World History Database records associated with France.
The first successful entirely earthbound measurement of the speed of light is carried out by Hippolyte Fizeau, measuring the speed of light in air, which is slower than the speed of light in vacuum by a factor of the refractive index of air 1.0003
This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.