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

Astronomia; Astronomia ogólna

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 ...

единица на забрзување

Astronomia; Astronomia ogólna

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

зголемување

Astronomia; Astronomia ogólna

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

Astronomia; Astronomia ogólna

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

Astronomia; Astronomia ogólna

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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Kristina Ivanovska

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Branża/Dziedzina: Urządzenia medyczne Kategoria: Produkty kardiologiczne

аортална валвула

The aortic valve is the heart's main doorway between the left ventricle and the aorta. The aortic valve can be affected by a range of problems that ...