alkali metal (element i grupit I )

alkali metal (element i grupit I )

Metal in the first column of the periodic table

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نوع المصطلح: اسم
المرادف (المرادفات)
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المجال / النطاق: علم الفلك
الفئة: فلك عام
Company: Caltech
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علم الفلك; فلك عام

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علم الفلك; فلك عام

The interval of time in days (and fraction of a day) since Greenwich noon on Jan. 1, 4713 BC. The JD is always half a day off from Universal Time, because the current definition ...

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علم الفلك; فلك عام

Either of the two points (vernal, autumnal) on the celestial sphere where the ecliptic (which is the apparent path of the sun on the sky) intersects the celestial equator. Due to ...

shtrirje

علم الفلك; فلك عام

Angular distance of a celestial object from the sun in the sky. In standard ephemerides, this is usually denoted by the Greek letter epsilon (or by the abbreviation "Elong. "). A ...

pjerrësi

علم الفلك; فلك عام

One element of the astronomical coordinate system on the sky that is used by astronomers. Declination, which can be thought of as latitude on the earth projected onto the sky, is ...

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Festa e Eid al-Fitr-it

Muslim holiday that marks the end of Ramadan, Muslims are not only celebrating the end of fasting, but thanking GOD for the help and strength that he ...