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Under Carl Zeiss's article, it mentions that the Abbe sine condition was formulated under the combined efforts of Ernst Abbe and Carl Zeiss. Should we not also include Carl Zeiss's contribution in this article?

The Abbe sine condition was formulated by Ernst Abbe. Zeiss might have inspired him, but it was really not his field of expertise.-- Afluegel ( talk) 20:15, 8 April 2009 (UTC) reply