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| To take in without echo or reflection: to absorb sound and light. |
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A curved piece of clear glass or plastic that bends (refracts) light rays. Example: eyeglasses, camera lens, telescope lens. |
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| A property of sound; highness or lowness of sound. |
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The bouncing of light, heat, or sound off a surface. Example: Tinted car window. |
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The bending of a wave, such as a light or sound wave. Example: Camera, telescope, and eyeglasses. |
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So sheer as to permit light to pass through. Example: Overhead transparency. |
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| A rapid back and forth movement that produces sound. |
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A repeating up and down or back and forth movement of matter.
Example: Light wave and sound wave. |
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