Sketch of Prof. John Le Conte ; [and] Sensitive flames and sound-shadows (1889)
Stevens, W. Le Conte (Walter Le Conte), 1847-1927 · New York : D. Appleton · leaf 29
diagram (Fig. 7) suppose the arrows to representthe direction of a group of parallel rays of either sound or light,the wave fronts being indicated by lines across the direction ofthe arrows. Waves in one phase are indicated by the continuouslines, and those in opposite phase by the dotted lines. At… … Fio. 7.—Exterior and Interior DirrRACTioN. and zeros. Behind it the secondary waves from opposite edgesmeet each other. At the sides, secondary waves interfere withthe advancing main wave. Where like phases meet, the crossesrepresent points of increased disturbance. Where opposite phasesmeet, the…
LeConte, John, 1818-1891 · Sound-waves
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
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