jedinica ubrzanja

Derived units are units constructed from the SI system's base units . For example, the SI unit for density is kg/m3, derived from the base units kg and m.

astronomska jedinica

天文学; 惑星科学

The mean Earth-Sun distance, equal to 149. 5 million kilometers or 93 million miles.

absolutna jedinica

心理学; 行動分析

A unit of measurement whose value is defined in a fixed or unvarying manner independently of the phenomenon being measured.

astronomska jedinica

天文学; 天文学全般

1) Mean distance between the Earth and the Sun: 1.495985 × 1011 m. 2) The AU is the preferred unit for distances within the solar system. Mercury, the innermost planet, lies on ...

aktinoidi

天文学; 天文学全般

Elementi sa atomskim brojevima od 89 (Aktinij) i 103

aktinijum

天文学; 天文学全般

Mekan, srebrno-beli radioaktivni metal koji sija u mraku

akivna optika

天文学; 天文学全般

Controlling the shape of a telescope mirror at a relatively slow rate.

adaptivna optika

天文学; 天文学全般

Compensating for atmospheric distortions in a wavefront by high-speed changes in the shape of a small, thin mirror.

americijum

天文学; 天文学全般

radioactive silvery metal which does not occur naturally

ubrzanje

天文学; 天文学全般

1) A process by which a star accumulates matter as it moves through a dense cloud of interstellar gas; or, more generally, whereby matter surrounding a star flows toward it (as in ...