digger wrote: ↑Thu Sep 20, 2018 9:14 pm
You said you saw bluing on lances Rods to. It's probably the case of you seeing what you want aka confirmation bias. You have to be careful looking at amateur photographers internet pics.
Oh gosh, there's a LOT more to it than that. Females generally have a higher cone ratio than males and so are better at determining hues. My first degree was in making porcelain teeth and these sorts of things were important. Many males are color blind in any event but that makes them better at determining value.
Most failure analysis pictures are in black and white because SEM images are gray-scale and, prior to the internet and e-publishing, glossy color plates in printed texts were very expensive.
Yeah, I took the graduate research methods courses in cognitive psych as well. There are issues beyond confirmation bias; inattentional blindness, for example.
Anyways, I have plenty of other things to do besides finding examples of fatigue failure induced coloration in broken connecting rods.