Construction and Application of High Pressure Mercury Vapour Lamps for the Ultraviolet Region

Abstract

As already mentioned in the introduction to this book, the high pressure mercury vapour lamps which existed in the years before 1930 were almost solely used as U.V. sources for medical treatment. After 1930 the use of high pressure mercury vapour lamps for lighting purposes started to assume large proportions. Although the field of applications of these lamps as U.V. sources after 1930 could not keep pace with that of the mercury lamp as a light source, the types serving as sources of U.V. radiation are nowadays manufactured in a great number of varieties. Depending upon the application each type has its own shape, suitable for the purpose for which it is intended.