The increase or decrease in light waves or sound waves as the source of the light or sound approaches or recedes double-bind theory from an observer. For example, the whistle of a train as it rushes past is perceived as changing its pitch.
The increase or decrease in light waves or sound waves as the source of the light or sound approaches or recedes double-bind theory from an observer. For example, the whistle of a train as it rushes past is perceived as changing its pitch.
