Also known as: sr.
SR has various meanings in the Space category. Discover the full forms, definitions, and usage contexts of SR in Space.
For nautical purposes is when Sun's upper limb is in eastern horizon Zenith distance is then 90deg 50' (Refr 34' SD 16').
SpaceSolar radiation is radiant energy emitted by the sun, particularly electromagnetic energy. About half of the radiation is in the visible short-wave part of the electromagnetic spectrum. The other half is mostly in the near-infrared part, with some in the ultraviolet part of the spectrum .
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