Swinging chandelier
Time: 1581
Place: University of Pisa, Pisa, Italy
Details: In 1581, when Galileo was studying medicine, he noticed a swinging chandelier, which air currents shifted about to swing in larger and smaller arcs. To him, it seemed, by comparison with his heartbeat, that the chandelier took the same amount of time to swing back and forth, no matter how far it was swinging. When he returned home, he set up two pendulums of equal length and swung one with a large sweep and the other with a small sweep and found that they kept time together. It was not until the work of Christiaan Huygens, almost one hundred years later, that the tautochrone nature of a swinging pendulum was used to create an accurate timepiece.
‹ Earlier in historyNetherlands to depart the empire1581 Later in history ›A new outbreak of bubonic plague occurs in Spain1582
Best-effort ordering. Some events may appear out of order since many are only known to the year, but they are usually around the same period.
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