ELi5: Why is that when you photograph a television or phone screen, the picture shows squiggly lines all over the screen?

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This “lines” aren’t really visible when you’re just looking at a screen. I’m not sure if this has something to do with the resolution of the screen, or perhaps even quality of camera, but I’ve taken pictures of multiple TV screens while they were on. Each came out with some kind of distortion.

In: Technology

3 Answers

Anonymous 0 Comments

You might be seeing something called a moire pattern – it’s caused by two grids (in this case, the tv pixels and the camera pixels) being slightly different scales.

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