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alfa raspad

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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  • ส่วนหนึ่งของคำพูด: noun
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  • อุตสาหกรรม/ขอบเขต: Astronomy
  • Category: General astronomy
  • Company: Caltech
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raspad
Chemistry; General chemistry

Promjena elementa u drugi element, najčešće uz emisiju druge čestice (drugih čestica) i energije.

alfa
Animals; Dogs

Pojam koji se primjenjuje za opisivanje najviše rangirane ili najdominantnije jedinke određenog spola. Koristi se za socijalne životinje: alfa ženka vučjeg čopora.

aktinijum
Astronomy; General astronomy

soft, silvery-white, radioactive metal which glows in the dark

nuklearna veličina
Astronomy; General astronomy

See definition for m 2 , above.

orbitalni elementi
Astronomy; General astronomy

Parameters (numbers) that determine an object's location and motion in its orbit about another object. In the case of solar-system objects such as comets and planets, one must ...

orbita
Astronomy; General astronomy

The path of one object about another (used here for an object orbiting the sun).

meteori
Astronomy; General astronomy

Small rocky and/or icy particles that are swept up by the earth in its orbit about the sun. Also called "shooting stars", they travel across the sky in a very short time, from ...

m2
Astronomy; General astronomy

The magnitude value measured (or predicted) for a comet's nuclear condensation. Note that the true comet nucleus is rarely, if ever, directly observed from the earth because of ...

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