English: A Wilberforce pendulum, invented by British physicist Lionel Robert Wilberforce around 1896,[1] consists of a mass suspended by a long helical spring and free to turn on its vertical axis, twisting the spring.
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A Wilberforce pendulum, invented by British physicist Lionel Robert Wilberforce around 1896, consists of a mass suspended by a long helical spring and free to turn on its vertical axis, twisting the spring