> Sunlight has a power of ~2kw/m^2 in visible spectrum FYI, solar radiation is more like 1050 W/m^2 on earth's surface, of which about 40% is in the visible sp

> Sunlight has a power of ~2kw/m^2 in visible spectrum FYI, solar radiation is more like 1050 W/m^2 on earth's surface, of which about 40% is in the visible spectrum. https://en.wikipedia.org/wiki/Sunlight https://en.wikipedia.org/wiki/Sunlight