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Physics of Meteoric Phenomena (Hardcover, 1983 ed.)
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Physics of Meteoric Phenomena (Hardcover, 1983 ed.)
Series: Geophysics and Astrophysics Monographs, 22
Expected to ship within 12 - 17 working days
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"Meteoric phenomena" is the accepted term for the complex of physi
cal phenomena that accompany the entry of meteoric bodies into the
at mosphere of the earth (or of any planet). "Meteoric bodies" are
usually defined as cosmic bodies observed by optical or radar
techniques, when they enter the atmosphere. The limiting
sensitivity of present-day radar equipment makes it possible to
record meteors of up to stellar magnitude +14, while the most
brilliant bolides may reach magnitude -19. On a mass 7 7 scale this
corresponds approximately to a range of 10- to 10 g. How ever, met
or astronomy is also concerned with larger objects, namely
crater-forming meteorites, or objects that cause large-scale
destruction when they arrive through the atmosphere (an example is
the Tunguska River meteorite). Consideration of the interaction of
such objects with 12 the terrestrial atmosphere extends the mass
range to 10 g. On the other hand, scientists studying fragmentation
processes in meteoric bod 7 ies have to consider particles with
masses less than 10- g, and the use of data from meteoric-particle
counters on rockets and artificial satel lites, from microcraters
on the lunar surface, and from noctilucent clouds 12 lowers the
minimum mass to 10- g. Therefore, the mass range of meteoric
bodies, or meteoroids, encompasses 24 orders of magnitude. Although
recent years have witnessed considerable development in meteor
research, both in the Soviet Union and elsewhere, the main mono
graphs on meteor physics were published twenty or more years ago."
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