BlogHide Resteemsmarkhacks (25)in science • 7 years agoAmazing Matchstick Trickmarkhacks (25)in science • 7 years agoAmazing Skittles Rainbowmarkhacks (25)in science • 7 years agoAmazing Refraction Of Light In Watermarkhacks (25)in oddly • 8 years agoAmazing Sand PendulumHi, today I would like to introduce you sand pendulum drawing lissajous patterns. Enjoy this video! Mark Hacksmarkhacks (25)in oddly • 8 years agoStuff In ReverseHi guys, I would like to introduce my first video that I published last year. I just shot some things backwards. I made some more videos, but I would like to do much more. And you can help me…