Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 103
urse—deviated—but it is also brokenup—dispersed—into many colours. We have a con-siderable amount of colour; and this the early observersfound when they increased the size of their telescopes, 80 STARGAZING: PAST AND PEESENT. [uook n. for it must be remembered that a lens is only a verycomplex… … Fig. 41.—Dispersion of Light by Prism. well. The colour and indistinctness came from anoverlapping of a number of images, as each colourhad its own focus, owing to varying refrangibilities.They found, therefore, that the only effective way of in-creasing the power of the telescope was by…
Astronomy · Telescopes
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
