04. Waves and wave Motion

A disturbance that carries energy from one place to another

, either electromagnetic or mechanical, is a disturbance that travels out from the source producing it, transferring Energy from the source to other places through which it travels

A disturbance carrying energy through a medium without any overall motion of that medium

Energy transmitted from one place to another at the speed of light

the number of cycles passing per second

The distance between two corresponding parts of a wave

The maximum displacement of a wave from its mean position

A wave where the direction of vibration is parallel to the direction in which the wave travels

A wave where the direction of vibration is perpendicular to the direction in which it travels

The bouncing of waves off an obstacle in their path

The changing direction of a wave when it enters a region where its speed changes

The spreading out of a wave when it passes through a gap or passes by an obstacle

Occurs when waves from two sources meet to produce a wave of different amplitude

Occurs when waves from two coherent sources meet to produce a wave of higher amplitude

**check**

Occurs when waves from two coherent sources meet to produce a wave of lower amplitude

**check**

The wave pattern formed when waves from two or more coherent sources meet

Two waves are said to be coherent if

they have the same frequency and are in phase or have a constant phase difference between them.

The restriction of wave vibrations to one plane only

(A superposition of) two waves of the same frequency and amplitude, with no net transfer of energy.

The apparent change in the frequency of waves due to the relative motion of the source and the observer

*The frequency of vibration of every vibrating particle on a stationary wave is the same.

The frequency or a stationary wave is the same as the frequency of the travelling wave producing it.