the solar constant is the radiant flux density from the sun at the earth's surface and is about 0.135 W/cm^2 when the sun is directly overhead. assume an average wavelength of 650nm for the sun's radiation at the earth's surface.
a) find the amplitude of the E and B fields.
b) find the number of photons that arrive each second on one square meter of surface (assume noontime, equator, equinox)