partícula alfa

partícula alfa

1) Nucleus formed by the α-process (q.v.) (see even-even nuclei.)

2) Particle first discovered in radioactive α decay, and later identified as helium nuclei (two protons and two neutrons bound together.)

3) The nucleus of a 4He atom, consisting of two protons and two neutrons. Mass of α-particle 4.00260 amu.

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Галузь/тема: Astronomy
Category: General astronomy
Company: Caltech
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partícula

Chemistry; General chemistry

Small portion of matter, actually the msallest one after molecule. Molecule is divided to particles.

alfa

Design; Design

A 'color component' which represents the opacity of an object.

alfa

Animals; Dogs

Term used to describe the highest ranked or most dominant individual of one's sex. Used of social animals: the alpha female of the wolf pack..

alfa

Software; Computer; Operating systems

The graphics state parameter that Quartz uses to determine how to composite newly painted objects to the existing page. At full intensity (alpha =1.0 ), newly painted objects are ...

Sistema de Procesado de imágenes astronómicas

Astronomy; General astronomy

Developed by the National Radio Astronomy Observatory.

órbita

Astronomy; General astronomy

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

meteoros

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 ...

equinoccio

Astronomy; General astronomy

Either of the two points (vernal, autumnal) on the celestial sphere where the ecliptic (which is the apparent path of the sun on the sky) intersects the celestial equator. Due to ...

cometa

Astronomy; General astronomy

A celestial body orbiting the sun (though some may be ejected from the solar system by planetary perturbations) that displays (at least during a portion of its orbit) some ...

cenit

Astronomy; General astronomy

The point directly overhead in the sky.

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Галузь/тема: Food (other) Category: Snacks

chicharrón

Chicharrón is the deep-fried, salted and crunchy pork rind. It is a typical Dominican snack (or picadera as they would call it) and you can easily buy ...