Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 444
Fig.419 IWlit Til … Section of a Movie Film showing Secketaky of Wau Bakek TURNING HIS HeAD TO SPEAK TO GeNEKAL PeKSHING The moviug-picture camera makes a series of snapshots upon a film, usually atthe rate of 10 per second. The film is drawn past the lens with a jerky movement,being held at rest during the instant of…
Physics
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