Weird Speaker Effect (by drummaboy5189)
“I filmed my monitors playing a 61 hertz sine wave tone at 60fps. I expected to just see the speaker slowly move in and out, but ended up with a weird wobble effect. I believe it’s because of the rolling shutter effect in DSLR cameras…”
Movement:
Four dancers from the International Institute of the Margaret Morris Movement rehearsing on the beach at Sandwich.
Photo by: Reg Speller
(via Illustrations of Ventilation (1869) | The Public Domain Review)
Illustrations showing movement of air through various rooms, from Lectures on Ventilation (1869) by Lewis W. Leeds.
(via Flapping Wings Kinetic Rings @Craftzine.com blog)
Metalsmith and jewelry maker Dukno Yoon makes these amazing kinetic rings with feather “wings” that move when the wearer bends the finger donning the ring. Watching the animated GIFs is decidedly mesmerizing.



