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GYROMAGNETIC RATIO

The ratio y of the magnetic moment of a system to its angular momentum. For orbit

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GYROPLANE

Rotorcraft with unpowered rotors on a vertical axis. Also autogyro.

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GYROSCOPE

Spinning body in a gimbal mount or similar, which resists torques altering the alignment of the spin axis, and in which precession or nutation replace the direct response of static bodies to such applied torques. Used as a compass, or as a controlling device for servos which reduce the misalignment and thus correct the course or eg stabilize a ship. Also gyrostat. Abbrev gyro. See fibre-optics gyro, floated rate-integrating gyro, laser gyro, rate gyro, tuned-rate gyro,

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GYROSYN

TN for a remote-indicating compass system employing a directional gyroscope which is monitored by and synchronized with signals from an element fixed in azimuth and designed to sense its angular displacement from the Earth

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GYROTRON

In fusion studies, very high-frequency power generator for microwave heating at the electron cyclotron resonance,

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GYRUS

A ridge between two grooves; a con

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GZELIAN

The youngest epoch of the Pennsylvanian period.

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