Newall, H. F · London : Society for Promoting Christian Knowledge · leaf 29
result of the difference in the velocity of light inthe media on the two sides of the surface at whichrefraction takes place. Experiment proves that lighttravels more slowly in water than in air (see page 10).Let us now proceed to consider how this experimentalfact, combined with the conception of… … Fig. 11. follow one another at regular minute intervals, sominute, in fact, that in the figure we must imaginethat there are 5000 waves between the successivelines A A, B B, which are one-tenth of an inch apart.If we follow the movement of one particular wave-front, we may represent it as reaching…
Spectroscope · Spectrum analysis
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
