The Kelvin (K) is the SI base unit of temperature, named after the Belfast-born engineer and physicist William Thomson, 1st Baron Kelvin (1824–1907). Kelvin uses absolute zero as the null point (0°K) which is equivalent to -273°C (Celsius) or -459.67°F (Fahrenheit).

Related Glossary Terms

Lumens

SI base unit

A related Blog post from Lamps and Lights

Related Products

Some of our most popular LED light bulbs:

  • BIG Medium Globe LED ES light bulb.jpeg 150x150

    LED filament Medium Globe light bulb

    £10.00 – £14.10

    Colour options available

    Bulb holder types available
    Edison Screw, Bayonet Cap

  • big bulb globe large led filament es lit cal 150x150

    LED filament Large Globe light bulbs

    £14.20 – £18.80

    Colour options available

    Bulb holder types available
    Edison Screw, Bayonet Cap

  • big bulb candle bent tip led filament ses lit cal 150x150

    LED filament Candle light bulb with bent tip

    £5.30 – £6.70

    Colour options available

    Bulb holder types available
    Bayonet Cap, Small Edison screw

  • 65ce4d7013e98067e3bb867d calex spiral filament led lamp e27 t32 gold 25w dimmable 316156 150x150.png?v=171085

    LED filament Long tube light bulb (Spiral effect filament)

    £13.20

    Bulb holder types available
    Edison Screw