QR 11/13 - Christian Doppler

[eller]

Trivia #1010. What physicist discovered that a wave's frequency changes when the source and the observer are in motion relative to one another?

1) Max Planck
2) Christian Doppler
3) Enrico Fermi
4) Albert Einstein
5) None of the above

Your Answer: 2

Have a great day!

Lori

 

[Tantor]

Thanks!