Also called incidence. Optics, Physics. the angle that a straight line, ray of light, etc., meeting a surface, makes with a normal to the surface at the point of meeting.
(on an airplane) the angle, usually fixed, between a wing or tail root chord and the axis of the fuselage.
Chiefly British, (def 1).
the angle that a line or beam of radiation makes with the normal to the surface at the point of incidence
another name for angle of attack
Also called rigging angle of incidence. the angle between the chord line of an aircraft wing or tailplane and the aircraft’s longitudinal axis
angle of incidence
The angle formed by a ray or wave, as of light or sound, striking a surface and a line perpendicular to the surface at the point of impact.
- Angle iron
an iron or steel bar, brace, or cleat in the form of an angle. Also called angle, angle bar, L bar, L beam. a piece of structural iron or steel having a cross section in the form of an L . Historical Examples A settee-cushion, all burst and impaled upon a piece of angle iron, […]
- Angle of lag
the phase difference, expressed in degrees, by which one sinusoidal function moves behind a second having the same period, as alternating current moving behind the alternating voltage.
angiophacomatosis angiophacomatosis an·gi·o·pha·co·ma·to·sis or an·gi·o·pha·ko·ma·to·sis (ān’jē-ō-fə-kō’mə-tō’sĭs, -fāk’ō-) n. See Lindau’s disease. See Sturge-Weber syndrome.
angiopathy angiopathy an·gi·op·a·thy (ān’jē-op’ə-thē) n. Any of several diseases of the blood or lymph vessels.