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Vocabulary Ch. 9-11 EFAND

Across
restrict the vibrations of (a transverse wave, especially light) wholly or partially to one direction. (Ch.11)
of considerable importance, size, or worth. (Ch.11)
a progressive disturbance propagated from point to point in a medium or space without progress or advance by the points themselves, as in the transmission of sound or light. (Ch.9)
the number of cycles or completed alternations per unit time of a wave or oscillation. (Ch. 9)
Working against a keen and quick insight. (Ch.10)
something that does not or cannot change or vary. (Ch.9)
to send forth (liquid, light, heat, sound, particles, etc.); discharge. (Ch.10)
a space entirely devoid of matter. (Ch.11)
Down
characterized by or involving the emission of electrons from a surface by the action of light. (Ch.11)
apart or detached from others; separate; distinct: (Ch.9)
a particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to the radiation frequency but has zero rest mass. (Ch.11)
the absolute value of the maximum displacement from a zero value during one period of an oscillation. (Ch.10)
completely contrary to nature, reason, or common sense; absurd; senseless; utterly foolish: (Ch.10)
the distance, measured in the direction of propagation of a wave, between two successive points in the wave that are characterized by the same phase of oscillation. (Ch.9)
the smallest quantity of radiant energy, equal to Planck's constant times the frequency of the associated radiation. (Ch.9)
a substance, body, or device that readily conducts heat, electricity, sound, etc.: (Ch.10)