Recent content by peterparker

A Division by zero isn't an infinite but an undefined result. It's because If the divisor approaches zero from the negative side, the result tends to minus infinity.

I didn't take diffraction as an explanation because A) the effect seems stronger on metals, B ) the bright glow seems to be too defined, no ripples in intensity are visible (as seen in the slot experiment) and C) I'm not able to find a photograph of the effect by Googling "visible diffraction"...

Today I was watching the full moon while I had one eye closed. There was a vertical metal rod which, by moving my head a bit, covered the moon completely, so that no direct light could hit my eye. (Yeah... I do things like that...) I saw a thin line of moonlight parallel to the rod right at the...