An arc lamp or arc light is the general term for a class of lamps that produce light by an electric arc (also called a voltaic arc). The lamp consists of two electrodes typically made of tungsten which are separated by a gas.

Arc Light

An arc lamp or arc light is the general term for a class of lamps that produce light by an electric…

An illustration of an arc electric lamp or an arc lamp which produces light by an electric arc.

Arc Electric Lamp

An illustration of an arc electric lamp or an arc lamp which produces light by an electric arc.