vibration about an equilibrium position in which a restoring force is proportional to the displacement from equilibrium
amplitude
the max displacement from the equilibrium
period
the time that it takes a complete cycle to occur
frequency
the number of cycles or vibrations per unit of time
medium
a physical environment through which a disturbance can travel
mechanical wave
a wave that requires a medium through which to travel
transverse wave
a wave whose particles vibrate perpendicularly to the direction the wave is traveling
crest
the highest point above the equilibrium position
trough
the lowest point below the equilibrium position
wavelength
the distance between two adjacent similar points of w ave, such as from crest to crest of from trough to trough
longitudinal wave
a wave whose particles vibrate parallel to the direction the wave is traveling
constructive interference
a superposition of two of more waves in which individual displacements on the same side of the equilibrium position are added together to form the resultant wave
destructive intereference
a superposition of two or more waves in which individual displacements on opposite sides of the equilibrium position are added together to form the resultant wave
standing wave
a wave pattern that results when two waves of the same frequency, wavelength, and amplitude travel in opposite directions and interefere
node
a point in a standing wave that maintains zero displacement
antinode
a point in a standing wave, halfway between two nodes, at which the largest displacement occurs