There are two types of mechanical waves, they are
- Transverse wave
- Longitudinal wave
- In a transverse wave, the particles present in the medium vibrate in a direction perpendicular to the direction of propagating wave.
- Example: Waves in strings, light waves, etc.
- Transverse waves are produced only in solids and liquids.
Transverse nature of waves
- In a longitudinal wave, the particles of the medium vibrate in a direction parallel to the direction of propagation of the wave.
- Example: Waves in springs, sound waves in a medium.
- Longitudinal waves are produced in solids, liquids and also in gases.
Longitudinal nature of waves
The seismic wave formed during an earthquake is an example of a longitudinal wave. The waves travelling through Earth's layers due to explosions and earthquakes are called seismic waves. Using a hydrophone and seismometer, one can study these waves and record them. Seismology is the branch of science that deals with the study of seismic waves.