aktinium

aktinium

soft, silvery-white, radioactive metal which glows in the dark

0 0

Améliorer

Ajouter une image

Partie du discours : nom
Synonyme(s) :
Blossaire :
Secteur d’activité/Domaine : Astronomie
Catégorie : l'astronomie générale
Company: Caltech
Produit :
Acronyme-Abréviation :

Suite

Ajouter à Mon Glossaire

Autres langues :

Suite

Commentaires

Voir les termes similaires

vit julian

Astronomie; l'astronomie générale

Exactly 365. 25 days, in which a century (100 years) is exactly 36525 days and in which 1900. 0 corresponds exactly to 1900 January 0. 5 (from the Julian-date system, which is ...

heliocentrik

Astronomie; l'astronomie générale

Referring to the sun. A heliocentric orbit is one based on the sun as one of the two foci of the (elliptical) orbit (or as the center of a circular orbit); a heliocentric ...

datë juliane

Astronomie; l'astronomie générale

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 ...

ekuinoks

Astronomie; l'astronomie générale

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

Astronomie; l'astronomie générale

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

Astronomie; l'astronomie générale

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 ...

Les termes dans Actualités

Termes en vedette

ilirejupi

0
Termes
0
Blossaires
6
Abonnés

Secteur d’activité/Domaine : Sports Catégorie : Basketball

gjuajtje me 3-pikë

(basketball term) a field goal worth 3 points because the shooter had both feet on the floor behind the 3-point line when he released the ball; also ...