Remember 2015, when the internet went crazy over whether or not a dress was blue and black (and it was blue, don’t tell me otherwise) or white and gold? Well, a new visual phenomenon has gone viral, and this time it’s about stripes.
People tweeted out things like “Your shirt is the devil” and “Why yo shirt trippin me out??” as they continually zoomed in and out to see different versions of it. She must have felt pretty good about it, as most of the tweets also contained some compliment on her looks, magical shirt be damned.
It’s actually a simple explanation to the phenomenon. The zigzag effect is called moiré, and it’s caused by the relationship between the frequency and angle of the pattern, and the size of the pixels on your screen. As you zoom in and out, that changes and gives you a different pattern.