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The falling off of the energy density of radiation with distance from the source, or with passage through an absorbing or scattering medium.

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Kalbos dalis: noun
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Pramonės šaka / sritis: Astronomy
Category: General astronomy
Company: Caltech
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слабеење на моќта на електромагнетните сигнали

Aerospace; Satellites

The loss in power of electromagnetic signals between transmission and reception points.

ахроматска леќа

Astronomy; General astronomy

Lens (or combination of lenses) that brings different wavelenghts within a ray of light to a single focus, thus overcoming chromatic aberration. It was first successfully made by ...

активна галаксија

Astronomy; General astronomy

1) Active galactic nuclei are very luminous. Their energy output is in two forms: nonthermal continuum and thermal emission line. 2) Any galaxy which is emitting large quantities ...

активна оптика

Astronomy; General astronomy

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

единица на забрзување

Astronomy; General astronomy

A unit for measuring acceleration, which is metre per second squared.

зголемување

Astronomy; General astronomy

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 ...

теорија на акумулација

Astronomy; General astronomy

The theory by which planetesimals are assumed to collide with one another and coalesce, eventually sweeping up enough material to form the planets.

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Pramonės šaka / sritis: Holiday Category: Unofficial holidays

Големиот американски Smokeout

Гледано секоја година од 1977 година, големиот американски Smokeout се одвива на третиот четврток од ноември. Спонзорирано од Американското здружение ...