The chandelier of the Pisa Cathedral hangs from under the dome on a 49-meter suspension. All tourist groups are told about the bronze chandelier, which is located in the Italian city of Pisa, the first discovery of Galileo is associated with it.
The air currents under the dome swayed the chandelier. In 1583, 19-year-old Galileo Galilei was at a bishop’s service, and drew attention to the fluctuations of this chandelier. Genius pays attention to everything in which ordinary people do not see anything special, although they have seen it a thousand times. Galileo uses the beats of his pulse as a clock and notices that the time of one oscillation of the chandelier remains unchanged, although the amplitude of the oscillations becomes smaller.
Observing the swing of a chandelier, Galileo discovered the law of isochronism of pendulum oscillations. So the story of one chandelier, which was observed by a genius, gave life to pendulum clocks. Now Galileo’s “lamp” is motionless. Over the centuries, many things become immobile … – but this does not detract from the value of discoveries, does it?