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1. Definitions and principles
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Definitions
A gyroscope is a device capable of providing a physical reference direction and, correlatively, angular rotation information, in the form of an angular deviation, or whole angle, between 0 and 360, relative to an absolute or "inertial" reference frame.
A gyrometer is a device capable of providing angular velocity information, relative to an absolute reference frame (i.e. fixed relative to the stars).
In a number of cases, the same device can operate as a gyroscope or a gyrometer.
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Gyroscopic principles
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A gyroscope (angle meter) basically uses the characteristic property of inertiality...
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Definitions and principles
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On the theoretical approach
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The Ultimate Scientific and Technical Reference