mercury arc

Also found in: Dictionary, Encyclopedia.
Related to mercury arc: Mercury arc lamp

mer·cu·ry arc

an electric discharge through mercury vapor between electrodes, one of which is usually mercury; provides a rich source of therapeutic ultraviolet rays; the containing tube is usually quartz; may also be glass with a fluorite window.
References in periodicals archive ?
However, in contrast to the behavior of the mercury arc lamp mentioned above, the excimer lamp responds much faster to control commands, i.
First we simply duplicated Gabor's work using a mercury arc lamp.
We came to the conclusion that the coherence of the laser would enable you to do what was un-thinkable with a mercury arc source, namely make holograms of reflective 3-dimensional objects.
Using a 5-s exposure of a UV microbeam (a 200-W mercury arc lamp served as the source), we cleanly severed single microtubules extending from the axonemes.