【总结】SATII物理考试常用术语

2011-07-18 13:52:11 来源: 互联网责编：楷维留学指南

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　　Conservation of momentum

　　The principle stating that for any isolated system, linear momentum is constant with time.

　　Constant of proportionality

　　A constant in the numerator of a formula.

　　Constructive interference

　　The amplification of one wave by another, identical wave of the same sign. Two constructively interfering waves are said to be “in phase.”

　　Convection

　　Heat transfer via the mass movement of molecules.

　　Convex lens

　　Also called a converging lens, a lens that is thicker in the middle than at the edges. Convex lenses refract light through a focal point.

　　Convex mirror

　　A mirror that is curved such that its center is closer to the viewer than the edges, such as a doorknob. Convex mirrors reflect light away from a focal point.

　　Cosine

　　The cosine of an angle in a right triangle is equal to the length of the side adjacent to the angle divided by the length of the hypotenuse.

　　Crest

　　The points of maximum displacement along a wave. In traveling waves, the crests move in the direction of propagation of the wave. The crests of standing waves, also called anti-nodes, remain in one place.

　　Critical angle

　　For two given media, the smallest angle of incidence at which total internal reflection occurs.

　　Cross product

　　A form of vector multiplication, where two vectors are multiplied to produce a third vector. The cross product of two vectors, A and B, separated by an angle, , is , where is a unit vector perpendicular to both A and B. To deine which direction points, you must use the right-hand rule.

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