Кристал

The transparent cover on a watch face made of glass crystal, synthetic sapphire or plastic. Better watches often have a sapphire crystal which is highly resistant to scratching or ...

сафирни кристал

Montres; Montres

A crystal made of synthetic sapphire, a transparent, shatter-resistant, scratch-resistant substance.

кварцни кристал

Archéologie; Évolution de l'humanité

A hexagonal crystal of silicon dioxide.

Фотон

Machineries industrielles; Appareils à laser

In quantum theory, the elemental unit of light, having both wave and particle behavior. It has motion, but no mass or charge. The photon energy (E) is proportional to the EM wave ...

Електрични Вектор

Machineries industrielles; Appareils à laser

The electric field associated with a light wave which has both direction and amplitude.

Електромагнетно зрачење

Machineries industrielles; Appareils à laser

The propagation of varying electric and magnetic fields through space at the velocity of light.

Електромагнетни спектр

Machineries industrielles; Appareils à laser

The range of frequencies and wavelengths emitted by atomic systems. The total spectrum includes radio waves as well as short cosmic rays. Frequencies cover a range from 1 Hz to ...

Електромагнетни талас

Machineries industrielles; Appareils à laser

A disturbance which propagates outward from an electric charge that oscillates or is accelerated. Includes radio waves; X rays; gamma rays; and infrared, ultraviolet, and visible ...