Incandescent bulbs give about 10 lumens of light per watt of electric power Halogens give about 13 lumens per watt CFLs give about 50 lumens per watt So it depends on the type of bulb.
To achieve 400 lux light intensity, you can use a combination of natural and artificial lighting sources. Positioning a light source such as a desk lamp or overhead light close to your workspace can help increase the lux level. Additionally, maximizing natural light through windows or using reflective surfaces can also contribute to achieving 400 lux.
Lux is a measure of illuminance, or the amount of light hitting a surface. Watts, on the other hand, are a measure of power. The relationship between watts and lux depends on the characteristics of the light source and the distance from the source to the surface. In general, there is no direct conversion between watts and lux.
To achieve 1000 lux, you would need approximately 6-7 40-watt fluorescent lights per square meter. Lux is a measure of illuminance, so the number of lights required can vary depending on factors such as the height of the lights and the reflectivity of the surfaces in the room.
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