Last edited 17 Sep 2018

Lighting

Light bulbs with dollar sign.jpg

The term ‘lighting’ refers to equipment, the primary purpose of which, is to produce light. This is typically some form of lamp. However, lighting can also refer to the use of natural light to provide illumination.

Light can be defined as being the electromagnetic radiation that exists within a certain portion of the electromagnetic spectrum. In terms of 'visible light', i.e. that which enables the sense of sight, it is the part of the spectrum that can be detected and seen by the eye.

The level of light on a surface is described as ‘Illuminance’ and is measured in lux (lx), where one lux is equal to one lumen per square metre (lm/m²) and a lumen is the SI unit (International System) of luminous flux, describing the quantity of light emitted by a lamp or received at a surface.

Articles on Designing Buildings Wiki about lighting include: