4.+Transverse+wave

** Anatomy of a Transverse Wave **
If a snapshot of such a **transverse wave** could be taken so as to //freeze// the shape of the rope in time, then it would look like the following diagram.




 * Crest are the highest points of the wave
 * Troughs are the lowest points of the wave
 * Amplitude is the maximum displacement of a particle from the rest position.

= = = **Some wave terminology:** = = = **1. In phase** >
 * two particles are in phase if they have the same displacement and are moving in the same direction.
 * particle A, B and C are in phase with each other. They have the same displacement and will move downwards in the next moment.
 * particle D, E and F are also in phase. They also have the same displacement and will move upwards in the next moment.


 * 2. Wavelength[[image:http://andrejkoymasky.com/lou/sym/mi1.gif width="36" height="25"]] **


 * the shortest distance between any two points in the wave that are "in phase".
 * for example the shortest distance between two successive crest
 * or the shortest distance between two succesive trough



**3. Period of wave, T** >
 * time taken for the wave to produce one complete wave ( i.e. one wavelength).
 * usually expressed in seconds

**4. Frequency of wave** > > > >
 * no. of complete waves produced in one second.
 * unit is measured in Hertz (Hz).
 * in 1 second, one complete wave is produced for wave A. Hence its frequency is 1 Hz.
 * in 1 second, 2 complete waves is produced for wave B. Hence, its frequency is 2 Hz.
 * the higher the frequency, the more waves are produced in 1 second.

Mathematically, the relationship between period and frequency is:



=In Summary:= media type="custom" key="23860858"