Last week, I was wiping up crumbs when brown motion out the window caught my peripheral vision. It was not random. It was deliberate, but quick, and it was dark. It was not my dog, because she was under the high chair seeking the crumbs I was wiping. It was not my neighbor’s dog, who […]
perception
That vertical axis — the electromagnetic spectrum which is science-talk for light — actually goes from something like 3 x 102 to something like 3 x 1024 (in the same units), which is from radio waves, through microwaves, to infrared, to the visible (that tiny rainbow window there), to the ultraviolet, to xrays, to gamma rays. […]