Elements of astronomy: accompanied with numerous illustrations, a colored representation of the solar, stellar, and nebular spectra, and celestial charts of the northern and the southern hemisphere (1875)
Lockyer, Norman, Sir, 1836-1920 · New York, D. Appleton and company · leaf 171
hat the average number of meteors which traverse the atmospheredaily, and which are largeenough to be visible to thenaked eye on a dark clearnight, is no less that 7,500,-000; and, if we include mete-ors which would be visible ina telescope, this number willbe increased to 400,000,000 ! Some… … Fig -Shape of the LIGHT. 307. What are visible on almost any clear night ? On some nights what maywe even see ? How many meteors, on an average, has it been calculated, traversethe atmosphere daily ? To what have some astronomers attributed the Zodiacal . THE NOVEMBER SHOWERS. 165 which the Earth…
Astronomy
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