Fifteen uncoupled simple pendulums of monotonically increasing lengths dance together to produce visual traveling waves, standing waves, beating, and random motion. Source: bit.ly/32duu99

Beautiful timelapse of a lenticular cloud hovering over Mount Teide in the Canary Islands as day turns to night, captured by photographer Bartosz Wojczyński. Watch the full 4K video here: bit.ly/3m9hPMl

Top secret information.Evil forces from China have been exposed. A dark hand runs the Western world😱😱🤣🤣

Newton's first law of motion demonstrated with dirt on a tennis racket. via philip_tennis/ig bit.ly/33ZAcLt

Engineering is 🤯 Elon Musk