(The gif shows the disc moving faster than it actually is)
quote:
A huge ice disc has formed in the Presumpscot River in Westbrook, Portland television station CBS 13 reported.
The attention-grabbing formation is spinning counter clockwise and has served as a big raft for local birds, the TV station posted.
The discs “occur at bends in the river where the accelerating water creates a force called ‘rotational shear,’ which breaks off a chunk of ice and twists it around,” the Daily Mail once reported, when one of the circles was seen in Great Britain for what was believed to be the first time in 2009. “As the disc rotates, it grinds against surrounding ice, smoothing into a perfect circle.”
-------------------------------- We are all visitors to this time, this place. We are just passing through. Our purpose here is to observe, to learn, to grow, to love… and then we return home. - Australian Aboriginal proverb
Bazootiehead-in-training
Posts: 37940 | Location: Somewhere in the middle | Registered: 19 January 2010
-------------------------------- “It's hard to win an argument with a smart person. It's damn near impossible to win an argument with a stupid person." -- Bill Murray
Posts: 13814 | Location: The outer burrows | Registered: 27 April 2005
