Using this design, you can construct an electromagnetically impulsed pendulum clock with a 1-second beat. On the prototype, the pendulum rod is 115cm long with a bob adjusted to make it beat every ...

[Nicholas Rehm] works during the day at the Applied Physics Laboratory at Johns Hopkins, Maryland, so has considerable experience with a variety of UAV applications. The question arose about how the ...

A pendulum is released and the height of the swing is recorded. A rod is then placed in the way of the pendulum and the process is repeated. The height of the swing with the rod is the same as without ...