наизменична струја (НС)

For electrical discharge lamps, this is the voltage measured across the discharge when the lamp is operating. It is governed by the contents of the chamber and is somewhat ...

фосфор

ライト＆照明; 照明製品

An inorganic chemical compound processed into a powder and deposited on the inner glass surface of fluorescent tubes and some mercury and metal-halide lamp bulbs. Phosphors are ...

фактор снаге

ライト＆照明; 照明製品

Measurement of the relationship between the AC source voltage and current. High power factor ballasts require less AC operating current at the same wattage than an equivalent low ...

зрачење

ライト＆照明; 照明製品

A general term for the release of energy in a "wave" or "ray" form. All light is radiant energy or radiation, as is heat, UV, microwaves, radio waves, etc.

рефлексија

ライト＆照明; 照明製品

The ratio of light reflected from a surface to that incident upon it.

спектар

ライト＆照明; 照明製品

See SPECTRAL POWER DISTRIBUTION (SPD).

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Новгород

Водећи град Русије и комерцијални центар који је био у процвату током средњег века, постао је главни уред Ханза. На врхунцу своје моћи под Александром ...