What we have is an issue with terminology. The thing is, “white” only makes sense when specifically referring to human vision.
Our eyes have cells (cone cells) that are tuned to specific wavelengths in the EM spectrum. Three different wavelengths - one set of cone cells peak at 560nm that we see as Red, one at 530nm that we see as Green, and one at 420nm that we see as Blue.
“White” is just our interpretation of a strong signal in these three frequencies.
If, everything else being equal, our cones cells responded to higher wavelengths that our eyes can’t currently see, then our “white” might easily be what we see as “red” now, because we’d be also seeing the infra-red that we’re currently not.
Yes. Kind of. Probably.
What we have is an issue with terminology. The thing is, “white” only makes sense when specifically referring to human vision.
Our eyes have cells (cone cells) that are tuned to specific wavelengths in the EM spectrum. Three different wavelengths - one set of cone cells peak at 560nm that we see as Red, one at 530nm that we see as Green, and one at 420nm that we see as Blue.
“White” is just our interpretation of a strong signal in these three frequencies.
If, everything else being equal, our cones cells responded to higher wavelengths that our eyes can’t currently see, then our “white” might easily be what we see as “red” now, because we’d be also seeing the infra-red that we’re currently not.