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It's mainly the visible wavelengths that can get through the atmosphere. You should see the absorption spectrum for water, it's remarkably transparent in the vi
by sacrosancty 4y ago
It's mainly the visible wavelengths that can get through the atmosphere. You should see the absorption spectrum for water, it's remarkably transparent in the visible! That's how the greenhouse effect works - longer wavelength thermal radiation is blocked by greenhouse gasses.
- coryrc 4y agoVisible light is also the ones turned into electricity, so it would make sense for panels to not be highly reflective at them.
- sacrosancty 4y agoYes, that's why they're dark! But it doesn't change the fact that they're dark.
- petre 4y agoIt also heats up dark surfaces. One way to remove that heat would be to have some kind of combined PV + solar thermal panel. The other lower tech option is to cover your roof with soil and plants, which release the heat back during the night. Vegetation is esentially a heat buffer.