алфа распаѓање

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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Valdkond/domeen: Astronomy
Category: General astronomy
Company: Caltech
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распаѓање

Chemistry; General chemistry

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

распаѓање

Archaeology; Human evolution

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

распаѓање

Personal life; Divorce

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

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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Боб Марли

Јамајкански музичар и текстописец кој живеел од 1945 - 1981, и е несомнено најпознатиот реге музичар на сите времиња. Неговата компилација Легенда, ...