I became uncertain by converting the solar brightness LUX into the W/m2. My lack of understanding comes from the situation in which the unit of 1W/m2 corresponds to 683 or 685 LUX (under a wavelength of 555nm). https://cumulus.hosiene.co.uk/viewtopic.php?t=3979
In the other link I saw the relation between W/m2 and LUX like:
$\rm Lux$ and $W/m^2$ relationship? saying that 1Lux is 0.0079W/m2.
If it were like this, the 685lux would correspond to 5.41W/m2, not 1W/m2.
Finally, the solar constant. Since the maximum illumination of LUX received by the Earth (outside of the atmosphere) is about 133K lux.
And the last thing, does the solar constant unit apply to second or minute?
how does it correspond to the value of the solar constant, which counts about 1370W/m2? Based at the computations mentioned above, I would compute that at the edge of the Earth's atmosphere is: about 170000LUX when we consider the relation of 1Lux = 0.0079W/m2? about 935700 LUX when we consider the relation of 1W/m2 = 635Lux
Could anyone explain where the value 1W/m2 = 98 LUX comes from? How could I understand this relation, which isn't valid inside of the Earth's atmosphere, where the relation of 1Lux = 0.0079W/m2 is applicable better? Is it related to the wavelength?
