But for teflon to passively cool, it would have to be strongly absorbent in the IR.
The way it works is this: the sun’s rays are at 5500 K. So you pick the set of materials that reflect light in the visible gap (the atmosphere takes care of the rest).
This keeps the material from getting heat.
Then, from this set, you pick a material that is strongly absorbent in IR.
If it absorbs in IR, itll emit there too, there y cooling itself
But for teflon to passively cool, it would have to be strongly absorbent in the IR.
The way it works is this: the sun’s rays are at 5500 K. So you pick the set of materials that reflect light in the visible gap (the atmosphere takes care of the rest).
This keeps the material from getting heat.
Then, from this set, you pick a material that is strongly absorbent in IR.
If it absorbs in IR, itll emit there too, there y cooling itself