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алфа распаѓање

1) Spontaneous emission by a heavier element (such as uranium) of positively charged helium nuclei - alpha particles - comprising 2 protons and 2 neutrons. The result of this radioactive decay is that the original element is very gradually converted into another element, with a decreased atomic number and mass. Alpha particle emission may be simultaneous with beta particle decay. 2) The disintegration of an atomic nucleus, in which the final products are an alpha particle and a nucleus with two fewer protons and two fewer neutrons than the original.

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распаѓање
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Change of an element into a different element, usually with some other particle(s) and energy emitted.

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In physics, the breaking apart of nuclei into smaller constituent nuclei, releasing energetic particles in the process as there is less total energy.

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Meaning to end or dissolve. Often used interchangeably with the word “divorce” as in “dissolution of marriage”.

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Astronomi; Astronomi secara umum

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; Astronomi secara umum

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
Astronomi; Astronomi secara umum

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

единица на забрзување
Astronomi; Astronomi secara umum

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

зголемување
Astronomi; Astronomi secara umum

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; Astronomi secara umum

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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