Chapter 11: Terms

1. pulse: a single or separate and short disturbance that travels along a medium like a wave; also known as a wavel pulse

2. wave: a continuous, repeating string of pulses that carry along a disturbance without moving matter from one place to another

3. wavelength: the distance between crests or between valleys for a wave

4. amplitude: the maximum distance from equilibrium that an individual piece of a wave moves as the wave moves by

5. wavespeed: the speed with which the wave as a whole moves

6. frequency: the number of times per second with which a wave comes by a particular location (this is the same as the frequency of a simple harmonic oscillator)

7. period: the time between repetitions of a wave (this is the same as the period of a simple harmonic oscillator)

8. transverse wave: a wave in which the motion of individual pieces that make up the wave is perpendicular to the motion of the wave itself

9. longitudinal wave: a wave in which the motion of individual pieces that make up the wave is along the direction of the motion of the wave itself

10. polarization: transverse waves may be plane polarized so that all the motion of the wave is confined to a plane

11. superposition: the characteristic of waves that allows two waves to pass through each other without disturbance. When two waves are superposed, the resulting amplitude is the sum of the amplitudes of the two individual waves.

12. interference: superposition of waves. When two waves interfer, the resulting amplitude is the sum of the amplitudes of the two individual waves.

13. standing waves: the pattern of nodes and antinodes produced when a wave a particular frequency interfers or superposes with its reflection

14. resonance: a pattern or disturbance of large amplitude which occurs for particular frequencies

15. nodes: regions in a standing wave where the amplitude is zero (the distance between nodes is one half wavelength)

16. antinodes: regions in a standing wave of maximum amplitude (the distance between antinodes is one half wavelength)