The no-hair theorem is about black holes.
Black holes can be described by just three visible properties: mass, electric charge, and angular momentum, or spin.
The theory itself was first stated by Werner Israel, a Canadian physicist. Then John Archibald Wheeler said that black holes have no hairs. This gave the idea its name. What he meant was: except for these three properties, no other properties can be got from a black hole.[1] However, Wheeler said that Jacob Bekenstein coined the phrase.[2]
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