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Three of the most eminent natural philosophers, Galileo, an Italian, Römer, a Dane, and Fizeau, a Frenchman, have fairly shared its labors.

If I might be pardoned the use of a phrase of Darwin's in this field, I should say that Fizeau's apparatus was the descendant of Galileo's lantern.

If we examine Fizeau's apparatus closely, we shall recognise in it an old acquaintance: the arrangement of Galileo's experiment.

You know Wheatstone's rotating mirror, Fizeau's wheel, Plateau's perforated rotating disks, etc.

A modification of M. Fizeau’s chloride of gold “fixing process” is still used to tone, and imparts a rich purple colour to photographic prints on plain and albumenized papers.