colour.constants.CONSTANT_K_M¶
- colour.constants.CONSTANT_K_M = 683.0¶
Rounded maximum photopic luminous efficiency \(K_m\) value in \(lm\cdot W^{-1}\).
CONSTANT_K_M : numeric
Notes
To be adequate for all practical applications the \(K_m\) value has been rounded from the original 683.002 value.
References
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