A ring laser gyroscope produced by the Arsenal factory in Ukraine. Credit: Nockson, CC-BY-SA 3.0 Ring laser gyros, or RLGs, use a closed ring of light to measure angular acceleration. At the heart ...
The idea behind the ring laser gyroscope actually dates back to 1913, when a French physicist, Georges Sagnac, experimented with rays of light moving in opposite directions around a circular ...