Circular Clock Movements: A Geometric Application

David R. Duncan, Bonnie H. Litwiller

Abstract


First paragraph: The authors were recently looking at an ornamental battery operated wall clock. The second-hand “jumped” each second instead of moving at a constant rate. It appeared as though the minute-hand could also be seen to move whenever the second-hand jumped one second. Was this possible or was it an optical illusion?

Keywords


Geometry; Time; Measurement

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