An incandescent light bulb is an electric light with a wire filament heated to such a high temperature that it glows with visible light. However, as much as 90% of the power consumed by an incandescent is emitted as heat rather than visible light.
Halogen is a form of incandescent, this lamp has the truest colour rendering of any light (which is why it’s most often used to illuminate art). While it’s relatively low-cost and long-life options are available, it is associated with higher CO2 emissions.
A fluorescent lamp is a low pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps.
Light-Emitting Diode (LED)
LED lamps offer longer service life and higher energy efficiency than any other lamping option, and their small size makes them incredibly versatile. Contrary to common belief, LEDs have a versatile colour range to suit any aesthetic goal: natural white, warm white, cold white, RGB, and amber. Multichip technology even lets you combine different colour chips in a single unit for any colour temperature you envision.