The Mudcat Café TM
Thread #135578   Message #3094742
Posted By: Jim Dixon
13-Feb-11 - 09:30 PM
Thread Name: BS: Do small errors in books, film &c matter
Subject: RE: BS: Do small errors in books, film &c matter
There was a scene in the first Superman movie in which Lois Lane, skeptical that Superman really had X-ray vision, challenged him to prove it by telling her what color panties she was wearing. He answered (if I remember correctly) "blue" and convinced her.

That wouldn't work. Have you ever seen an X-ray image that showed you, for example, what color your liver was? X-ray IS a color. It's just beyond the range of visibility for ordinary humans. If X-rays were visible to us, they would appear as another color added to the spectrum as we know it.

If you shine a pure red light on anything, it looks either red or black. You can't use a red light to see any color other than red. Likewise you couldn't use X-rays to see any color other than X-ray.

(I'm ignoring fluorescence, but that's not likely to be a factor.)