Doppler Effect

Question 1

What is the Doppler Effect?

Answer 1

As a source emitting a certain frequency approaches an observer the frequency is perceived as higher when the source moves away the frequency is observed to be lower.

Question 2

vs is…

Answer 2

speed of source

Question 3

fo is ….

Answer 3

frequency of observer

Question 4

fs is ….

Answer 4

frequency of source

Question 5

vo is ….

Answer 5

speed of observer

Question 6

If the observer is stationary, and the source is approaching the observer, you must ________.

Answer 6

Subtract in the denominator, to get a larger number which correlates to a higher frequency.

Question 7

If the observer is not stationary and is moving away from the source (stationary), you must _______.

Answer 7

Subtract in the numerator, to get a smaller number is correlates to a lower observed frequency.