"Spherical and parabolic mirrors were known to the Greeks. To Euclid... is attributed a work on Catoptrics, dealing with phenomena of reflection. In it is found the earliest reference to the focus of a spherical mirror. In Theorem 30 it is stated that concave mirrors turned toward the sun will cause ignition. In the "fragmentum Bobiense," a document written, perhaps, by Anthemius of Tralles, the focal property of parabolic reflectors is demonstrated. Several Greek authors appear to have written on concave mirrors."
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A History of Physics in its Elementary Branches
A History of Physics in its Elementary Branches including the Evolution of Physical Laboratories by Florian Cajori was first published in 1899. It was written with the hope to improve science teaching, which Cajori felt at the time, was not sutticiently historical.
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