In the 17th century, Christiaan Huygens, inventor of the pendulum clock, noticed a curious phenomenon. When two identical pendulum clocks are mounted next to each other on a wall, their swings ...

[Stephen Hobley] has been experimenting with an electromagnetic pendulum in order to build himself a clock. Through the course of his experiments, he has learned quite a bit about how pendulums ...

This "magnetic pendulum" uses a motor to set it into motion at a specific speed and angle. Magnets within the pendulum's end and the floor repel one another as the pendulum swings, creating a complex ...

The $15,000 Pendulum Integrated Amplifier is the price of admission into the world of Dan D’Agostino amplification. An ingeniously re-engineered application of the JFET input circuit topology ...