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they will be IR visible, but what do you mean they don't exist? Apollo used them to bleed off excess heat.
by tensor_rank_0 9y ago
they will be IR visible, but what do you mean they don't exist? Apollo used them to bleed off excess heat.
- pocketstar 9y ago"A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence." [0] Black bodies are theoretical, they do not exist. Apollo had radiators, they might have been black but they were not a black body. Vantablack comes close to a black body for the visible spectrum which is p cool tho. [0]https://en.wikipedia.org/wiki/Black_body https://en.wikipedia.org/wiki/Black_body
- tensor_rank_0 9y ago> Black bodies are theoretical, they do not exist. Apollo had radiators, they might have been black but they were not a black body. they were, as I said, "black body radiators" which are not theoretically ideal black bodies, but still manage to radiate black body radiation.
- dannypgh 9y agoI think the term you're looking for is simply "radiator."
- tensor_rank_0 9y agoyes that is more parsimonious however in non-technical language the term "radiator" is associated with heat exchangers. if you put heat exchangers on the sides of your spacecraft they would function as radiators so I suppose it doesn't matter anyway, arguing semantics is a waste of time.
- pocketstar 9y agoa "radiator" is a heat exchanger and "radiator" is the industry standard term. these semantics are required for effective communication about technical topics.