активна оптика

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

Astronomi; Genel astronomi

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 ...

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Astronomi; Genel astronomi

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

зголемување

Astronomi; Genel astronomi

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

Astronomi; Genel astronomi

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

ахроматски објектив

Astronomi; Genel astronomi

A lens of two or more components with different refraction indices (e.g., crown glass and flint glass), used to correct for chromatic aberration.

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Канада Ден

Канада ден го слави на Сојузот на трите британски колонии (Нова Шкотска, Њу Бранзвик, и провинција на Канада) во она што е денешна Канада. Британскиот ...