Click the Pic - How does this work?(twitter.com)

2 pointsby oo7jeepvor 13 Jahren1 comments

https://twitter.com/SciencePorn/status/422565255726641152

1 comments

valtronvor 13 Jahren

It's composed of two images with transparent backgrounds. The foreground on one of the images consists only of white, and on the other only of black. Depending on what color's behind the picture, it obscures one or the other.

Edit: Gray background: https://twitter.com/SciencePorn/status/422565255726641152/ph...