👉 In mathematics, a subradar is a unit of angular measure used to measure the angle subtended by an object at the center of a circle. It is defined as one half of the circumference of the circle, measured in radians. For example, if you stand 1 meter away from a circular object and mark the point where your eyes meet it, then the subradar distance would be approximately 0.5 meters (or π/2 radians). This measurement is used to determine how

subradiancy