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The Choice of Wave-lengths for Achromatism in Telescopes
Journal:
Nature
doi:
10.1038/114644c0
Original link
Author:
J. WILLIAM GIFFORD
Summary:
MY attention has been directed to Prof. Townsend Smith's letter in NATURE of October 11, p. 536, in which he refers to my paper in the Transactions of the Optical Society. I entirely agree with the very useful curves he has drawn.
Keyword tag:
1924 Volume 114, Issue 2870