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9 ball on the break 4 second exposure (Explored 6/19/09) This is a photo of a billiards break where the nine ball was sunk (this automatically wins the game). DIY information: Shot with a 4 second exposure by using a neutral density filter, with ambient light. I waited for a two count and made the shot. It took 21 breaks before the 9 ball finally fell, which automatically wins the game. The smaller trails you see are either the reflection of a ball, or the white numbered spot as the ball rotates. Quite interesting to see the paths of the various balls, the two ball hardly moved at all and most were still moving at the end of the exposure. Governed by iron balls
A rotary governor on a nineteenth century steam engine. The faster the engine goes, the greater the lift on the balls whuich causes the steam supply to be checked thus automatically governing the engine speed according to ball mass, rotational velocity and relative valve setting. This is in Manchester Museum of Science and Industry main machine hall on a working day & the balls are whizzing round at about 100rpm. lockable water valve triple eccentric butterfly valve steam shut off valve kennedy valve company check valve function polyethylene ball valves pressure relief valves water forged steel valves clarkson knife gate valves |