4 ms·
How does black paint work anyway? What happens to the energy of the photons? (Will google, but perhaps someone here can explain?)
by apples_oranges 6y ago
How does black paint work anyway? What happens to the energy of the photons? (Will google, but perhaps someone here can explain?)
- ohazi 6y agoAbsorbed, adding energy to the paint molecules, then reradiated at a lower wavelength (IR), heating up nearby things.
- mrob 6y agoSome is conducted into the object that's painted, and some is radiated away as infrared. See: https://en.wikipedia.org/wiki/Black-body_radiation https://en.wikipedia.org/wiki/Black-body_radiation
- Bayart 6y agoIt dissipates as heat into the paint and it's substrate, I assume. At least that's what I always thought we wore dark clothes in winter and bright ones in summer.
- pfdietz 6y agoSome black paints/surfaces for solar heating applications are the opposite of the white paint in this thread: absorb strongly in visual and near IR, but only weakly in far IR (and so have low thermal emissivity at those wavelengths.)