A unit that compares that intensity of different sounds
Two or more waves combine to produce a wave with a smaller displacement
Cells in the retina that detect shape in dim light
The lowest point below the rest position
A wave of changing magnetic and electrical fields that can travel through empty space or matter
Cells in the retina that detect color in bright light
A change in sound frequency caused by motion of the sound source, motion of the listener, or both
Two or more waves overlap and combine together
A point where a crest or trough occurs midway between two nodes
Light passes through matter
The response of a standing wave to another wave of the same frequency
The frequency of a sound as you perceive it
Causes sunburn, kills bacteria
Longitudinal waves-compression's and rarefaction's that travel through a medium
Radiates heat, makes things warmer
A point on a standing wave that has no displacement from the rest position
Light is transmitted easily
The material though which a wave travels
The highest point of the wave above the rest position
Opens and closes to control the size of the pupil, gives the eye color
Useful to examine bones, security in airports