prolecna ravnodnvevnica

prolecna ravnodnvevnica

The position on the celestial sphere occupied by the sun on or about march 21 when its path on the ecliptic crosses the celestial equator going from south to north. This point is also called the march equinox and the first point of aries.

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Industri / Domain: Astronomi
Kategori: Mars
Company: NASA
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The invisible electromagnetic radiation beyond the violet end of the spectrum of visible light, of wavelengths ranging, roughly, from 4000 down to 400 angstroms.

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Very short wavelength radiations beyond the ultraviolet in the spectrum, which are about one ten-thousandth as long as the visible violet and are extremely penetrating.

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Industri / Domain: Geografi Kategori: Negara & Teritori

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