Discovered by Austrian physicist Christian Doppler ... a great effect on low-earth orbit (LEO) satellites as they weave towards and away from the earth. See Doppler radar. THIS DEFINITION IS ...

See Doppler effect. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Such a common experience in our everyday lives, the Doppler Effect has proved to be a major factor in demonstrating the existence of an ever-expanding universe. Simply put, the effect occurs when ...