A unit of luminous flux. The lumen is equal to the luminous flux radiated into a unit solid angle (steradian) from a small source having a luminous intensity of one candle. An ideal source possessing an intensity of one candle in every direction would rad ...

A measure of the efficacy (efficiency) of lamps. It indicates the amount of light (lumens) emitted by the lamp for each unit of electrical power (Watts) used.

A complete lighting unit consisting of a lamp(s), housing, and connection to the power circuit.

The physical measure of the subjective sensation of brightness; measured in lumens.

A measure of the intrinsic luminous intensity emitted by a source in a given direction. Luminance is a measure only of light. The comparable term for electromagnetic radiation in general is radiance.

Any emission of light at temperatures below that required for incandescence.

The flux of visible radiation, so weighted as to account for the manner in which the response of the human eye varies with the Wavelength of radiation. The basic unit for luminous flux is the lumen,

The intensity (flux per unit solid angle) of visible radiation weighted to take into account the variable response of the human eye as a function of the wavelength of light. Usually expressed in candles.

Man employed in unloading ships in harbour, or in taking a ship from one port to another. Paid "lump" sum for services.

Money paid to shipper for charter of a ship (or portion) up to stated limit irrespective of quantity of cargo

The sudden heave of the ship.

Leaking, Underground.

The unit of illuminance equivalent to 1lumen per square meter.

A photometric unit of illuminance or illumination equal to one lumen per square meter

Last Visit

Latvia(flag).

Latvia (Flag)

Long Water

Lower

Low Water Ordinary Near Tides.