Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 647
y attempted to increase the diameter of a tele-scope they were obliged to increase its length in a greaterratio in order to secure distinct vision. The cause of the indistinctness of small telescopes wasexplained by Xewton. after his discovery of dispersion, asdue to the fact that light of… … planet appeared surrounded by a fringe of colored light.Havinor satisfied himself that this phenomenon of chromaticaberration was an insuperable obstacle to the further im-provement of the refracting telescope, he turned his attentionto another form, which had been suggested a number of…
Physics
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