papparmane

papparmane t1_j808ogo wrote

Reply to TIL one of the earliest cetaceans was land-dwelling and had four long legs. by starofsavannah

I know it’s obvious to most people, but it’s only in the last ten years that I made the connection that mammals started on land and that at some point, some of them returned to water and became marine mammals. When I was young, there were fish, mammals, birds, reptiles, and yeah, btw, whales are mammals not fish but to me this was just a « fact » I had to know, some kind of "exception". In my head, it did not arise from evolution, there was no connection that fish and mammals were completely different things. I read that the current closest relative to whales is the hippopotamus. I do find it fascinating now that I have the big picture. Anyway. Thanks for coming to my Ted talk.

7

papparmane t1_iykie75 wrote

Reply to Is there a consistent and objective way to assess the color of an object? A transform function from spectrum to RGB, maybe? by DJTilapia

I have a very similar question that I failed to address a few years ago: I measured the spectra of various light bulbs and I (unsuccessfully) tried to infer the perceived Color. I used the COE curve and all that, and it did not work at all, especially for fluorescent light bulbs (it told me the light was green when it was blue-ish). I would love to know how to go from a spectrum to an actual Color.

1