Hobart, H. M. (Henry Metcalf), 1868-1946 ed · Philadelphia, J. B. Lippincott · leaf 213
g Standards Committee for thetesting of glow lamps. It has no glasschimney, but the mixture of pentane and airis burnt at an open Argand burner. It givesa light of 10 British candles when burn-ing in an atmosphere of 760 mm pressureand containing 10 liters of water-vapour percu m of dry air. (Ref.… … Fig. 1.—Helner Lamp Germany; a small and compact lamp burn-ing amyl-acetate which passes specified testsfor purity. As shown in fig. 1, the liquidis contained in a cylindrical reservoir whichforms the base of the lamp. A wick dipsinto this and passes up a thin-walled Ger-man-silver tube projecting…
Electrical engineering
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