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Ice discs form on the outer bends in a river where the accelerating water creates a force called ‘rotational shear’ , which breaks off a chunk of ice and twists it around. – awesome

Ice discs form on the outer bends in a river where the accelerating water creates a force called 'rotational shear' , which breaks off a chunk of ice and twists it around.

Ice discs form on the outer bends in a river where the accelerating water creates a force called 'rotational shear' , which breaks off a chunk of ice and twists it around. – original