Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: @reefthegolden_/Instagram In Grace's house, there's this oddly specific spot on the curtains that keeps catching ...

(via minutephysics) We look through windows every single day, yet the fact we can see a clear image through them is actually kind of amazing - this video explains why.

In Grace's house, there's this oddly specific spot on the curtains that keeps catching attention. Not the whole thing, just one little line right where the fabric of two curtains meets. And she ...