The pendulum clock was developed by ______.

The pendulum clock was developed by ______.

• A. Hygens
• B. Robert Hooke
• C. Galileo
• D. Aristotle

Answer: (A)

The timing idea hinges on the pendulum’s swing being highly regular, especially for small swings. Christiaan Huygens recognized this isochronism—the pendulum’s period stays nearly constant when the angle is small—and used it to regulate the mechanism inside a clock. In 1656 he built the first practical pendulum clock, a breakthrough that vastly improved accuracy over earlier designs. The period of a simple pendulum, T ≈ 2π√(L/g), shows that by fixing the length, the tick interval becomes very predictable, making it an excellent timekeeper. The name most closely associated with this invention is Huygens, and the other figures are linked to related ideas or earlier studies but not to the development of the pendulum clock itself.

The timing idea hinges on the pendulum’s swing being highly regular, especially for small swings. Christiaan Huygens recognized this isochronism—the pendulum’s period stays nearly constant when the angle is small—and used it to regulate the mechanism inside a clock. In 1656 he built the first practical pendulum clock, a breakthrough that vastly improved accuracy over earlier designs. The period of a simple pendulum, T ≈ 2π√(L/g), shows that by fixing the length, the tick interval becomes very predictable, making it an excellent timekeeper. The name most closely associated with this invention is Huygens, and the other figures are linked to related ideas or earlier studies but not to the development of the pendulum clock itself.