l has various meanings in the Physics category. Discover the full forms, definitions, and usage contexts of l in Physics.
Horizontal; the instrument used for checking whether things are horizontal. Levels on a drawing are heights above a recognised datum which might either be the Ordnance Datum or a local datum for the job, whose location and value has to be specified on the drawings. Horizontal, oran optical/mechanical device that allows determination of horizontal. OR The version of a software application program.
PhysicsAn empirical measure of the quantity of light. It is based upon the spectral sensitivity of the photosensors in the human eye under high (daytime) light levels. Photometrically it is the luminous flux emitted with a solid angle (1 steradian) by a point source having a uniform luminous intensity of 1 candela. Standard unit of measure for light flux or light energy. Lamp light output is measured in Lumens. It measures the rtotal amount of visible light emitted from any light source. It is SI derived unit of luminous flux. symbol is im.
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