Электрическая мощность в ватт (Вт) to illumвance in lux (лк) calculator and how to calculate.
Введите мощность в watts, luminous efficacy in lumens per watt, surface area in square feet / meters or spherical radius in feet / meters and press the Рассчитать button to get the illumвance in lux:
* the predefвed luminous efficacy values are typical / average values.
The illumвance Ev в lux (лк) is equal to 10.76391 times the мощность P in ватт (Вт), times the luminous efficacy η в lumens per watt (лм/Вт) divided by the surface area A в square feet (фт2):
Ev(лк) = 10.76391 × P(W) × η(лм/Вт) / A(фт2)
The illumвance Ev в lux (лк) is equal to the мощность P in ватт (Вт), times the luminous efficacy η в lumens per watt (лм/Вт) divided by the surface area A в square meters (м2):
Ev(лк) = P(W) × η(лм/Вт) / A(м2)