Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 95
equence of their high velocities, whichordinarily are in the neighborhood of 25 miles per second. Let m, Fig. 19, represent the path of a meteor before itencounters the atmosphere at A. Until it reaches A it isinvisible, but at A it begins to glow and continues luminousuntil it is entirely burned… … 66 AN INTRODUCTION TO ASTRONOMY [ch. n, 29 other parts of the triangle can be computed (compare Art. 10). After the distance OiA has been computed the perpen-dicular height ofA from the sur-face of the earthcan be computedby using the angleAOiOs. Similarly,the height of Babove the surface Fig. 19.…
Astronomy
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