Black Hole: Photographs of Paint Flung by Centrifugal Force by Fabian Oefner. See many more photographs on Colossal... these are amazing! http://www.thisiscolossal.com/2013/03/black-hole-photographs-of-paint-flung-by-centrifugal-force-by-fabian-oefner
Centrifugal sprinkler ➪ Hands-on experiment for school (physics, mechanics, inertia, centrifugal force, pump -> A straw and a toothpick can turn into a pump with a twist of your fingers! Once you have secured anything you want to stay dry, this fun experiment is a good way to introduce centrifugal forces and the principle behind many pumps.