Hefner candle
noun1
Historical A unit of light intensity defined as that produced by the Hefner lamp burning amyl acetate with a 40 mm flame height.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
Historical A unit of light intensity defined as that produced by the Hefner lamp burning amyl acetate with a 40 mm flame height.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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