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quantity of light
anal.chem.	Lichtenergie f
meas.inst.	Beleuchtung f
opt.	Lichtarbeit f (the product of the luminous flux by the time it is maintained; unit: lumen-hour, Im-hr); Lichtmenge f (the product of the luminous flux by the time it is maintained; unit: lumen-hour, Im-hr)
tech.	Lichtmenge f

quantity of light: 1 phrase in 1 subject

Optics branch of physics

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