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Results tagged with Search options user 4646

Questions related to the perception and measurement of light (primarily in the visible range), its mathematical description, the reproduction of colors by different means, color combinations, etc. Please use the tag [electromagnetic-radiation] if you want to refer to the general form of light.

448
votes
OK, it seems that user21820 is right; this effect is caused by both the foreground and the background objects being out of focus, and occurs in areas where the foreground object (your finger) partiall …
answered May 4 '14 by Ilmari Karonen
1
vote
It seems to me that you actually have two questions. To the first one, namely "Does the human eye perceive a similar effect for electromagnetic waves?" the answer is, presumably, "Yes." Two co …
answered Jul 24 '12 by Ilmari Karonen
4
votes
The inverse square law says that the intensity of incident light falls off in proportion to the inverse of the square of the distance from the light source. The important word here is "the distance" …
answered May 3 '16 by Ilmari Karonen