What is the definition for superposition?
When 2 waves of the same type meet at a point.
What is constructive interference?
Superposition where waves are in phase so that the resultant wave has a greater amplitude than the original wave.
What is interference?
When two or more coherent waves superpose at a point to produce a resultant wave with displacement is equal to the sum of the individual waves.
What is destructive interference?
Superposition where waves are in antiphase so that the waves cancel each other out and the resultant waves has a smaller amplitude than the original waves.
What is coherence?
When two waves have a constant phase difference.
What is the difference between path difference and phase difference?
Path difference is the difference in the distance travelled by 2 waves from source to a point (Measured in ___-metres whereas phase difference is the difference between the displacements of particles along a wave. (Measured in degrees or radians)
What is a stationary wave?
A wave where no energy is transferred (Energy trapped in system)
What is a node?
A point in a stationary wave which gives 0 amplitude
What is an antinode?
A point in a stationary wave which gives maximum amplitude
