Ring Laser Gyroscope
A ring laser gyroscope (RLG) consists of a ring laser having two counter-propagating modes over the same path in order to detect rotation. It operates on the principle of the Sagnac effect which shifts the nulls of the internal standing wave pattern in response to angular rotation. Interference between the counter-propagating beams, observed externally, reflects shifts in that standing wave pattern, and thus rotation.
Read more about Ring Laser Gyroscope: Description, Principle of Operation, Examples of RLG Applications
Famous quotes containing the word ring:
“These words dropped into my childish mind as if you should accidentally drop a ring into a deep well. I did not think of them much at the time, but there came a day in my life when the ring was fished up out of the well, good as new.”
—Harriet Beecher Stowe (1811–1896)