the angle subtended by a visual objective at the nodal point of the eye. The girth of an adult thumb at arm's length subtends nearly one-degree of visual angle, and there are 360-degrees of around the complete head.

VISUAL ANGLE: "The visual angle is broken into segments."
Cite this page: N., Pam M.S., "VISUAL ANGLE," in, April 29, 2013, (accessed October 15, 2020).