Effective Atmosphere
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Effective Atmosphere
</dt>
1. That part of the atmosphere
which effectively influences a particular process or motion, its outer limits
varying according to the terms of the process or motion considered.
</dd>
For example, an earth satellite orbiting at 250 miles altitude remains
within the ionosphere, but because the air particles are so sparse at this
altitude as to cause no appreciable friction of deflection, the satellite may
be considered to be outside the effective atmosphere. For movement of air
vehicles the effective atmosphere ends at the aeropause
(which see).
</dd>
2. = optically
effective atmosphere. [[/a>|/a>
]]
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use