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sciencing.com/history-pendulum-4965313.html

A pendulum is an object or weight suspended from a pivot point. When a pendulum is set in motion, gravity causes a restoring force that will accelerate it toward the center point, resulting in a back and forth swinging motion. The word "pendulum" is new Latin, derived from the Latin "pendulus," which means "hanging." Pendulums were used in many historic scientific applications.

Dutch scientist Christiaan Huygens built the first pendulum clock in 1656, increasing timekeeping accuracy from 15 minutes to 15 seconds per day

n 1818, Henry Kater devised the reversible Kater's pendulum to measure gravity, and it became the standard measurement for gravitational acceleration over the next century.

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Dinesh ^club

Two men had approached the mystery of gravity and planetary motions from different directions. Newton was a mathematical calculator. Hooke was an experimenter. The London-based employee of the Royal Society used the large internal space of St. Paul’s Cathedral and Westminster Abbey and a very deep well to observe the behavior of long pendulums and the way suspended objects react at different distances from the planet’s center. From these observations he extracted geometrical data and arrived at conclusions about universal gravity. ~ Page 248 “A Magical World” ~ Derek Wilson

3 years ago.

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