polarna svjetlost

polarna svjetlost

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

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التحسين

إضافة صورة

نوع المصطلح: اسم
المرادف (المرادفات)
مسرد المصطلحات
المجال / النطاق: علم الفلك
الفئة: فلك عام
Company: Caltech
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انظر المصطلحات المشابهة

ultravioletna svjetlost

كيمياء; كيمياء عامة

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

علم الفلك; فلك عام

The point directly overhead in the sky.

planetarna putanja

علم الفلك; فلك عام

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

meteori

علم الفلك; فلك عام

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

علم الفلك; فلك عام

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

علم الفلك; فلك عام

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

علم الفلك; فلك عام

a silvery ductile metallic element found primarily in bauxite.

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متابعين

المجال / النطاق: حيوانات الفئة: الأفاعي

kobra

A highly venomous snake from the elapidae family native to Asia and Africa. When alarmed, a cobra raises its head and expands the skin of the neck to ...