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x-zraci

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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التحسين
  • نوع المصطلح: اسم
  • المرادف (المرادفات)
  • مسرد المصطلحات
  • المجال / النطاق: علم الفلك
  • الفئة: المريخ
  • Company: NASA
  • المنتج:
  • الاختصار-المختصر:
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Negatively charged particles (electrons) that are emitted from a negative terminal in an evacuated glass tube.

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علم الفلك; المريخ

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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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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 ...

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علم الفلك; المريخ

The position on the ecliptic occupied by the sun about december 22 when it reaches its greatest southerly declination.

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