Definition

Two or more objects in line. Such objects are said to be in range. An observer having them in range is said to be on the range. See also TRANSIT. Distance in a single direction or along a GREAT CIR­CLE. The extreme distance at which an object or LIGHT can be seen, or a SIGNAL detected or used. The distance a craft can travel without refuelling, usually called CRUISING RADIUS. The difference in extreme values of a variable quan­tity.