Wilbert Smith Archives Files Box 1131 17 1131-17-p059

Document Text (OCR)

292 Meteors of February 9, 1913 «moon, and travelling at a speed of seven miles per second at a height of about twenty-five miles, is sufficient to maintain that velocity against the air resistance for eight to ten miles. A drop in speed lessens the air re- sistance, but it also lessens the kinetic energy, and the meteor drops into denser air. When a meteor no brighter than the full moon has dropped» toa d of seven miles per second, and a height of twenty-five miles, the of its path is very...