Definitions for "Arc lamp"
a lamp in which electric current arcs across two electrodes, providing an intense light source for illuminating both transparent copy (negatives, colour transparencies) and reflective copy (flat original art), and for burning-in plates
A lamp which burns with a characteristic spectrum which is used as a reference or comparison for the wavelength scale of a spectrum.
Light is generated through electricity which is conducted through gas between electrodes.
an optical source used in many kinds of instruments to provide high levels of brightness