рефрактор

рефрактор

A telescope that uses as its primary optical element a lens. Binoculars are a type of refractor. In general, refractors are much more expensive to build and buy than are reflectors.

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Kalbos dalis: noun
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Pramonės šaka / sritis: Astronomy
Category: General astronomy
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zenit

Astronomy; General astronomy

The point directly overhead in the sky.

рефлектор

Astronomy; General astronomy

A telescope that uses as its primary optical element a mirror. Nearly all large telescopes in use today by amateur and professional astronomers are reflecting telescopes.

фотометрија

Astronomy; General astronomy

In astronomy, the measurement of the light emitting from astronomical objects, generally in the visible or infrared bands, in which a specific or general wavelength band is ...

паралакса

Astronomy; General astronomy

The apparent displacement or the difference in apparent direction of an object as seen from two different points not on a straight line with the object (as from two different ...

орбита

Astronomy; General astronomy

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

метеори

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 ...

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Pramonės šaka / sritis: Anatomy Category: Cytology

ćelije

Ćelije su osnovne funkcionalne jedinice života (svi živi organizmi su sačinjeni od ćelija). Otkrio ih je Robert Huk 1665. god. Reč ćelija potiče od ...