Gage, Alfred P. (Alfred Payson), 1836-1903, Fessenden, C · Toronto : W.J. Gage · leaf 300
leap from the poles to the foil,jind travel in tortuous branching lines between the poles, LtJMlNOUS EFFECTS. 279 If the air is partially exhausted from the glass tube used inillustrating the law of falling bodies (Fig. 87), and thepoles of a coil or machine are applied to the opposite extremi-ties… … Fi?. 193. If a circular disk is divided into black and white sectors, asIn Figure 193, and rotated very rapidly in ordinary daylight,the colors blend, and the disk appears of a uniform gray color. But if the disk is illuminated in adarkened room by the electric spark,each sector appears separate,…
Physics
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