is a replaceable component such as an incandescent light bulb
, which is designed to produce light
These components usually have a base of ceramic, metal, glass or
plastic, which makes an electrical connection in the socket of a light fixture
. This connection may be made with a screw-thread base, two metal pins, two metal caps or a bayonet cap. Re-lamping
is the replacement of only the removable lamp in a light fixture.