A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 688
n order that light passing through a space on theoutward journey may be stopped by the next tooth on the return ? (Velocitvof light =30 x 10l° cm. per sec.) 7. Calculate the angular velocity of a mirror in revolutions per second,if a beam of light reflected by it travels a distance of 750 metres,… … Fig. 606.—Motion of tuning-forkwhen sounding. Sensation of sound.—Hearing, like sight and touch, is a primary sensation. A suitable stimulus, called a sound, applied to the ear produces the sensation of hearing. The source of this stimulus can always be traced to the movement of some body, although…
Physics
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