Amplitude: The maximum displacement of a
point above the equilibrium point.
Frequency: The number of cycles of a wave
that pass a point per second.
Wavelength: The minimum distance between
two adjacent points in a wave that are in phase
with one another.
Wave Speed: the change in distance per unit time of a wave
Phase and Path Difference
Phase Difference: The cycle difference
between the vibrations of two vibrating
Path difference: The difference in distance
from two coherent sources to an interference
Stationary Waves: a standing wave
produced when two progressive waves of the
same frequency, amplitude, and opposite
direction pass through each other.
Coherent: two sources of waves that emit
waves with a constant phase difference.
Interference: When two or more waves
interact with one another
Diffraction: The spreading of waves passing
through a gap or near an edge