Why do most of the electromagnetic waves emitted by the Sun that strike Earth's surface are infrared and visible light waves?

1 Answer
Feb 8, 2017

I would say because of its temperature:

Explanation:

A hot object emits radiation but the wavelength of this radiation depends upon its temperature:

SolarMade

The peak of emission is centred around the visible/IR part of the EM spectrum.

Consider a hot piece of Iron; you'll see becoming red corresponding to a certain specific temperature of the metal!

You can have a look at Planck's description of Black Body Radiation as well.