radioaktivnost

radioaktivnost

The spontaneous breaking apart, or decay, of unstable nuclei in isotopes. The unstable radioactive isotope is called the parent, and the products of the decay of the parent are called the daughter isotopes.

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Besedna vrsta: noun
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Industrija/področje: Astronomy
Category: Planetary science
Company: PSRD
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gustoća struje

Astronomy; Planetary science

Water movement due to differences in the density of the water from place to place usually caused by changes in the amount of material held in suspension or changes in temperature ...

srastanje

Astronomy; Planetary science

The growth of planets from smaller objects by impact, one impact at a time. After formation, planets are said to have "accreted" from small objects.

anomalija

Astronomy; Planetary science

A deviation from the common rule, type, or form; something abnormal or inconsistent.

hematit

Astronomy; Planetary science

An iron-oxide mineral (Fe 2 O 3 ) that may be the cause of the red color on Mars. Courser-grained gray hematite has the same chemical formula as the red variety, but a different ...

termoelektrična baterija

Astronomy; Planetary science

A sensor for measuring temperature. It consists of two dissimilar metals, joined together at one end, which produce a small voltage proportional to the temperature.

astrobiologija

Astronomy; Planetary science

Study of the origin, distribution, and destiny of life in the universe. These are interdisciplinary studies involving astronomers, astrophysicists, biologists, chemists, ...