jedinica površine (m2)

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 ...

luks

Echipamente electrice; Electricitate

The SI unit of luminance. One lux is one lumen per square meter.

luks

Energie; General

A unit of illumination equal to the direct illumination on a surface that is everywhere one meter from a uniform point source of one candle; a unit of illumination that is equal ...

paskal

Echipamente electrice; Celule de combustibil

The pascal (symbol: Pa) is the SI derived unit of pressure, stress, Young's modulus and tensile strength. It is a measure of perpendicular force per unit area i. E. Equivalent to ...

aktinijum

Astronomie; Astronomie în general

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

nuklearna veličina

Astronomie; Astronomie în general

See definition for m 2 , above.

orbitalni elementi

Astronomie; Astronomie în general

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

Astronomie; Astronomie în general

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

meteori

Astronomie; Astronomie în general

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 ...

Svjetlosno zagađenje

Astronomie; Astronomie în general

The emission of stray light or glare from lighting fixtures in manners that counter the purpose of the light (which is to light what is below); also known as the waste of money ...