Sorry I am dense. So I understand how it detects rotation when you rotate the ring laser around the center of the area it encloses. I do not understand how it could detect rotation any other way. Does this help?
This is my first time posting here so I hope I am in the right place. So I have read about some scientists who have built a ring laser that is sensitive enought to detec the Earth's rotation. I can get how a ring laser can detect the rotation of a missile say if the laser path is perpendicular...