| Definition | Term |
|---|
| a change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening | |
| radio detection and ranging, a system that uses reflected radio waves to determine the velocity and location of objects | |
| a transparent object that refracts light waves such that they converge or diverge to create an image | |
| sound navigation and ranging, a system that uses acoustic signals and echoes to determine the location of objects or to communicate | |
| any sound wave with frequencies higher than 20,000 Hz | |
| the increase of an object’s apparent size by using lenses or mirrors | |
| a unit or quantum of light | |
| the highest point of a transverse wave | |
| the maximum distance that the particles of a wave's medium vibrate from their rest positions | |
| the bending of a wave front as the wave front passes between two substances in which the speed of the wave differs | |
| a wave in hich the particles of the medium move perpendicularly to the direction the wave is traveling | |
| a pattern of vibration that simulates a wave that is standing still | |
| The electromagnetic spectrum, in order of lowest to highest energy (separate | |
| the combination of two or more waves that results in a single wave | |
| an image from which light rays appear to diverge, even though they are not focused there; cannot be projected on a screen | |
| in optics, a system that consists of two or more plane surfaces of a transparent solid at an angle with each other | |
| the number of cycles or vibrations per unit of time; also the number of waves produced in a given amount of time | |
| a measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave | |
| a wave that consists of oscillating electric and magnetic fields, which radiate outward at the speed of light | |
