how much distance is adjusted between lamp and luxmeter
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7
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there are infinity distance between those.
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2
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The lux meter is applied to measure lux at any distance from the source of light. Light meter to be taken to the center of the working area by means of a line up the light sensor with the light source. Light sensor to be held horizontally to the light source and take reading either in lux or foot-candles unit. The symbol of lux is: lx is the SI derived unit of illuminating and luminous emission, measuring luminous flux per unit area.
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