A Congreve clock (also known as Congreve's Rolling Ball Clock or Oscillating Path Rolling Ball Clock) is a type of clock that uses a ball rolling along a zigzag track to regulate the time. It was invented by Sir William Congreve in 1808.
A Congreve clock (also known as Congreve's Rolling Ball Clock or Oscillating Path Rolling Ball Clock) is a type of clock that uses a ball rolling along a zigzag track to regulate the time. It was invented by Sir William Congreve in 1808.
Source: Wikipedia "Congreve clock" · CC BY-SA 4.0
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