that contains mercury vapour at pressures of about
such a lamp
emits mainly at
They are also called germicidal lamps. There are cold- and hot-cathode
as well as cooled electrode-less (excited by microwaves) low-pressure mercury lamps.
The Wood lamp
is a low-pressure mercury arc with an added fluorescent layer that emits in the UV-A
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook