Abstract

The aim of the paper is to find out how the luminous flux of fluorescent lamps depends on the change of the source position. Linear fluorescent lamps, compact fluorescent lamps and circular fluorescent lamps were used for measurement. Linear and circular fluorescent lamps were measured in the horizontal and vertical position, the compact fluorescent lamp was measured with the slot facing down, and facing up, and also in a horizontal burner position. Measurement of luminous flux was done in an integrating sphere.

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