1 Harrison completed his first pendulum clock in 1713, before he was twenty years old.

2 Huygens, the inventor of the pendulum clock, at first attributed the effect to air currents, but he dismissed this hypothesis himself after performing several tests.

3 Pendulum clock features a European-style manufactured wood case with an oak finish.

4 Subsequently, mathematicians proved the point in theory and the physicist Huygens invented the pendulum clock on the basis of this theory.

5 His work in this direction was motivated by his interest in light and in the design of pendulum clock.

6 Most people think of this London landmark as Big Ben, but Big Ben is actually the name of the largest bell inside this pendulum clock.

7 Concept of time in the theory of relativity is harmony with that in classic physics while paradox on the law of running change of pendulum clock and atomic clock exists.

8 This alarm mechanism fit for kinds of ordinary mechanical pendulum clock movements.

9 Will no longer feel that life is too monotonous and old-fashioned as if the old house back and forth of that only know how to swing the pendulum clock units.