A ray of light is a narrow BEAM of electromagnetic radiation that travels in a straight line. It is typically emitted from a source such as the sun or a light bulb. The term 'ray of light' can be broken down into three parts: SHAFT (5 letters), BEAM (4 letters), and SUNBEAM (7 letters). A SHAFT is a long, thin object, such as a pole or a column. A BEAM is a concentrated bundle of energy, such as a laser BEAM or a BEAM of light. Finally, a SUNBEAM is a ray of light that comes from the sun.