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Galileo's proposed escapement
Galileo's escapement is a design for a clock escapement, invented by Galileo Galilei. A simple escapement. ... Galileo Galilei (15 February 1564 – 8 January 1642) was an Italian physicist, mathematician, astronomer, and philosopher who is closely associated with the scientific revolution. ...
Whilst observing, and timing with his pulse, the swinging of lamps in the cathedral at Pisa, Galileo realised that their apparent isochronicity could be used for timekeeping. We now know that the pendulum is only isochronous for extremely small amplitudes, but it was nonetheless a vast improvement on the crude verge escapements of the day, keeping time to perhaps 15 minutes in 24 hours. The Campo dei Miracoli (Field of Miracles) is a wide, walled area at the heart of the city of Pisa, Tuscany, Italy, recognized as one of the main centers for medieval art in the world. ... Isochronous means having an equal time difference or occurring simultaneously. ... The verge escapement is the earliest known type of escapement, the mechanism in a clock that maintains the swinging of a pendulum. ...
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