Spinning discs or circles {gyroscope}| {gyroscopic compass} can be in bearings {gimbal bearing} with three axes, which allow motion in any direction. Gyroscopes maintain space orientation. Laser beams can split and go through two paths, with different lengths if platform rotates, measured by wave interference. Paths are at triangle corners. Mechanical gyroscope rotation causes precession, which makes magnetic field. Semiconductor gyroscope vibrates in electric field against springs, and rotation changes vibration.
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Date Modified: 2022.0224