How A Gyroscope Works

Since Apple announced the iPhone 4, interest towards a gyroscope on device has grown, so I thought I should post a video to show you how it works. In this video you see how and why the gyroscope is the best and most precise method of measuring movements.

I do not know how it is implemented on a device, but this video shows you how a real gyroscope works, and it is pretty cool seeing that nothing that gravity throws at it can stop it (except friction).