history of optics - spheres as lenses

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Bruce Hyman
Bruce Hyman Contributing Member • Posts: 639
history of optics - spheres as lenses

Hi, hoping somebody can take this on.

i recall reading that early investigations into the theory of optics tried to use spherical lenses (because spheres are "perfect") as the model for analysis and investigation. this all was centuries before photography, of course.

in retrospect, its far easier to start with a planar piece of glass and make incremental changes (i.e., a very low power lens) and develop the theory from there.

does anybody have information/historical links to the use of theoretically "perfect" spheres as the early model for optical theory?

thanks.

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