Math for Laser and Optics Technicians: Geometry

This 2-page resource, from the National Center for Optics and Photonics Education (OP-TEC), briefly covers a geometry concept that is important for photonics technicians to understand. "Photonics technicians need to perform calculations using angles measured in both degrees and radians, converting between the two, if necessary. By using the equivalency between 2? radians and 360 degrees. They also need to calculate partial solid angles (in three dimensions), such as the solid angle subtended by a beam of light emanating and spreading out from a point source of light." The resource includes an example problem, a question, and a solution to the question.