About This Lesson
• A wave is the motion of a disturbance. Waves can be classified by:
the type of a disturbance – pulse or periodic;
the nature of the disturbance – mechanical or electromagnetic;
the relationship between the direction of the disturbance and the direction of the wave – transverse and longitudinal.
• A wave is a form of energy transfer from one point of space (medium) to the other.
Mechanical waves transfer energy, not matter.
