reasons for common failures of tuya led panel lights What is the formula for calculating the value?
A: According to the spectral radiation flux Φ (λ), the luminous flux formula is obtained:
Phi =Km■ Phi (lambda) gV (lambda) dlambda
In the formula, V (λ) -- relative spectral optical efficiency; Km -- The maximum spectral optical efficiency of the radiation, expressed in...
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