angle of sight
31Internal angle — Internal In*tern al, a. [L. internus; akin to interior. See {Interior}.] [1913 Webster] 1. Inward; interior; being within any limit or surface; inclosed; opposed to {external}; as, the internal parts of a body, or of the earth. [1913 Webster] 2.… …
32prediction angle — The angle between the line of sight to the target and the gun line when properly pointed for a hit on a future position. Also called a lead angle …
33sighting angle — An angle between the line of sight to the aiming point and the local vertical at the time of a bomb release. Also called a dropping angle …
34Fore sight — Fore Fore (f[=o]r), a. [See {Fore}, adv.] Advanced, as compared with something else; toward the front; being or coming first, in time, place, order, or importance; preceding; anterior; antecedent; earlier; forward; opposed to {back} or {behind};… …
35lambda angle — the angle between the pupillary axis and the line of sight …
36vertical angle — The angle in a vertical plane between a line of sight and the horizontal, positive above the horizontal and negative below [25] …
37phase angle — i. An angle between the sight lines to the sun and the earth measured at a remote location (e.g., other celestial bodies). ii. The number of electrical degrees between the time an AC (alternating current) voltage passes through zero moving in the …
38trail angle — noun : the angle between the trail sight and a vertical line from an airplane drawn at the instant of impact of a bomb dropped from the airplane …
39base angle — I. noun Etymology: base (III) : the horizontal angle between the base line and the orienting line in artillery fire measured from the base line in the same direction as angles are measured by the sight on the gun II. noun : either of the angles… …
40Artillery — For other uses of the term, see Artillery (disambiguation). Warfare Military history Eras Prehistoric Ancient …
