Gy
- Gy
- An abbreviation of gray, the amount of energy actually absorbed in some material, and is used for any type of radiation and any material.
- Gypsum
- The old name for Calcium Sulphate.
- Gyro
- Abbreviation for Gyroscope.
- Gyroradius
- Also known as Larmor Radius.
- Gyroscope
- A disc with a heavy rim mounted in such a way that its axis of rotation can adopt any position.
- Gyrotron
- A device for producing microwave energy that utilizes a strong axial magnetic field in a cavity resonator to produce azimuthal bunching of an electron beam.