2011-07-18 13:52:11 来源: 互联网 责编:楷维留学指南
Angle of incidence
When a light ray strikes a surface, the angle of incidence is the angle between the incident ray and the normal.
Angle of reflection
The angle between a reflected ray and the normal.
Angle of refraction
The angle between a refracted ray and the line normal to the surface.
Angular acceleration
A vector quantity, , equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.
Angular displacement
The net change, , in a point’s angular position, . It is a scalar quantity.
Angular frequency
A frequency, f, defined as the number of revolutions a rigid body makes in a given time interval. It is a scalar quantity commonly denoted in units of Hertz (Hz) or s–1.
Angular momentum
A vector quantity, L, that is the rotational analogue of linear momentum. For a single particle, the angular momentum is the cross product of the particle’s displacement from the axis of rotation and the particle’s linear momentum, . For a rigid body, the angular momentum is a product of the object’s moment of inertia, I, and its angular velocity, .
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关键词: SATII物理考试常用术语
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