Why do things get sun bleached through a window but you don’t get a sunburn when sitting near a window?

Question

Why do things get sun bleached through a window but you don’t get a sunburn when sitting near a window?

In: Chemistry

Answer 1

The amount of UV rays that makes its way through a window is not quite enough to cause a sunburn, but you can still get tanned from it. IE: The ‘trucker tan’.

Things sitting next to windows will also be affected by the UV rays, just not as much as if they were sitting outside directly in the sun.