The Schuler period was important for the invention of the gyrocompass: Even Albert Einstein was involved in the development ...

Optical gyroscopes have long been seen as an alternative ... “It will essentially be an electronic compass,” he says.

In the center of a Nerf football he made room for an accelerometer, gyroscope, and an electronic compass. All three can capture 3-axis data and, along with the LEDs ringing the circumference ...