Because physics are fun, this is a video of science experimenter NightHawkInLight creating a glow-in-the-dark pendulum swing using metal nuts (like Optimus Prime’s) covered in fluorescent paint and hanging from different lengths of wire under a blacklight. The results are hypnotizing, and I wouldn’t be the least bit surprised if

This is a video from the Moscow Metro of a man casually demonstrating his contact juggling skills. His one-ball routine is impressive enough, but the three and four ball skills starting around 1:30 are where the real magic happens. How are some people so smooth with their fingers and hands?