Introductory course of natural philosophy for the use of schools and academies. Ed. from Ganot's popular physics. By William G. Peck (1869)
Ganot, Adolphe, 1804-1887, Peck, William Guy, 1820-1892 · New York A.S. Barnes · leaf 433
rizon in the direction of the magnetic meridian. This light gradu-ally assumes the form of an arch of a pale yellowish color, havingits concave side turned towards the earth. From this arch streamsof light shoot forth, passing from yellow to pale green, and then tothe most brilliant violet purple.… … Fig. 282. What is a waterspout? (408.) What is the Aurora? Describe it. ATMOSPHERIC ELECTRICITY. 431 Since the aurora is always accompanied by a disturbance of themagnetic needle, and is generally arranged in the direction of thedip, and because the chemical action of electricity is accompaniedby…
Physics
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