polarna svjetlost

polarna svjetlost

the light produced by excited atoms and ions in the upper atmosphere of a planet

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Besedna vrsta: noun
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Industrija/področje: Astronomy
Category: General astronomy
Company: Caltech
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ultravioletna svjetlost

Chemistry; General chemistry

Electromagnetic radiation with wavelength longer than that of x-rays but shorter than that of visible light . Ultraviolet light can break some chemical bonds and cause cell ...

zenit

Astronomy; General astronomy

The point directly overhead in the sky.

planetarna putanja

Astronomy; General astronomy

The path of one object about another (used here for an object orbiting the sun).

meteori

Astronomy; General astronomy

Small rocky and/or icy particles that are swept up by the earth in its orbit about the sun. Also called "shooting stars", they travel across the sky in a very short time, from ...

kometa

Astronomy; General astronomy

A celestial body orbiting the sun (though some may be ejected from the solar system by planetary perturbations) that displays (at least during a portion of its orbit) some ...

alhemija

Astronomy; General astronomy

Art of bringing parts of the universe to the perfect state toward which they were thought to aspire - e.g., gold for metals, immortality for human beings.

aluminij

Astronomy; General astronomy

a silvery ductile metallic element found primarily in bauxite.

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Industrija/področje: Festivals Category: Halloween

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Also known as All Hallow's Eve, Halloween is an annual holiday celebrated on October 31st in America, Canada, and the UK. It is supposedly the one day ...