Angle at which the Sun's rays or insolation strike the Earth's surface. If the Sun is positioned directly over head or 90° from the horizon, the incoming insolation strikes the surface of th [..]

The acute angle at which a raypath impinges upon a line normal to an interface, such as a seismic wave impinging upon strata. Normal incidence is the case in which the angle of incidence is zero, the [..]

The angle that the sun's rays make with a line perpendicular to a surface. The angle of incidence determines the percentage of direct sunshine intercepted by a surface.

Light striking a surface is called “incident light.” It becomes “reflected light” when it reflects from the surface. The “angle of incidence” is the angle at which the incident light strikes the surfa [..]

The angle at which a ray of energy approaches a surface.

The angle at which an airfoil is normally fixed in relation to the longitudinal axis of an aircraft.

The angle of light hitting a surface. A basic rule of physics says that the angle of incidence equals the angle of reflectance, which means that the angle of the light coming towards the surface is th [..]

angle at which the sun's rays hit the Earth.

The angle between an incident ray and the normal to a reflecting or refracting surface.

The angle at which an airfoil is normally fixed in relation to the longitudinal axis of an aircraft.

The angle that the chord of a wing makes with the direction of motion relative to the air. A particularly muddling term, as it is often measured as the distance in inches that the front spar is above [..]

The angle between a light ray incident on a flat surface and an imaginary line (called the normal) perpendicular to the surface at the point of incidence.

The angle between the normal (perpendicular drawn to surface) and the incident ray.

The angle between the incident ray and the normal.

Angle between the normal to a surface and the direction of incident radiation; applies to the aperture plane of a solar collector. Most modern solar panels have only minor reductions in power output w [..]

The angle between the incident ray and the normal drawn to the point of incidence.

Angle of an incident (arriving) ray or particle to a surface; measured from a line perpendicular to the surface (the normal)

The angle between the normal and a ray incident to a surface.

TC The angle between the normal line and a ray or wave incident to a surface.

the angle that the incident wave makes with a line perpendicular or normal to the reflecting surface

the angle between the surface of an object and the direction of the sunshine. Solar panels produce the most power when the surface of the solar panel is exactly perpendicular to the direction of sunli [..]

This is a measure of the angle in degrees between the direct solar rays (straight on) striking a surface and a line perpendicular (vertical) to the surface at the point of impact.

The angle between the direction of propagation of an electromagnetic or acoustic wave (or ray) incident on a body and the local normal to that body.

angle of incidence – the angle between a sound source and the axis of a microphone. Also called sound incidence angle.

The angle at which X-rays strike a plane in the crystal.

Angle of incidence is a technical term that describes the angle of light as it strikes a surface. Understanding the angle of incidence is important when setting reflectors and determining what the angle of reflection is going to be, as they are one and the same.

The angle of light hitting a surface. A basic rule of physics says that the angle of incidence equals the angle of reflectance, which means that the angle of the light coming towards the surface is th [..]

A ray of light falling on a surface forms an angle with an imaginary line drawn at right angles to the surface. The imaginary line is known as the normal and the angle between it and the incident ray [..]

The angle formed between a ray of light and the normal point of incidence to the surface it approaches.

when light strikes a surface it forms an angle with an imaginary line known as the :normal," which is perpendicular to the surface. The angle created between the incident ray and the normal i [..]

The angle at which light strikes a surface and is transformed from "incident" to "reflected" light. The angle at which the reflection occurs is equal and opposite to the angle at which the light struck the surface.

Angle between the axis of an impinging light beam and a line perpendicular to the specimen surface.

The angle measured between the aircraft's longitudinal centerline and the chord line of the wing airfoil. This value changes throughout the span of most aircraft (WASHOUT).

the angle at which a ray of light (or radiation

<optics> The angle that a ray entering a refracting medium makes with a line drawn perpendicular to the surface of this medium, the angle that a ray striking a reflecting surface makes with a line perpendicular to this surface. Synonyms: incident angle. (05 Mar 2000)

Angle at which an airfoil surface is normally set in relation to the fore and aft axis of the airframe structure.

In terms of solar energy, the angle that the sun's rays make with an imaginary line perpendicular to a surface. The angle of incidence determines the intensity of the energy that any surface “see [..]