Neon Lamp
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
A 1930s encyclopedia overview of the neon lamp, an electric discharge lamp filled with neon gas that glows orange at relatively low voltages. It notes the lamp's wide application in physical instruments due to the direct proportionality between its luminous intensity and the supply current.
Encyclopedia entry (1928–1936)
NEON LAMP, an electric lamp without an incandescent filament, the bulb of which is filled with a so-called noble gas belonging to the zero group of elements—neon. This lamp, constructed a few years ago, has the peculiarity that the gas enclosed within it glows (with an orange light) already at a voltage of 120 volts. The neon lamp has become widely used in a number of physical instruments due to the fact that the intensity of its glow is in direct proportion to the strength of the current powering the lamp.
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“Neon Lamp.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/neon-lamp/