City of Science app for iPhone and iPad
4.0 (
5600 ratings )
Education
Developer: Rolf Bertram
Free
Current version: 1.2, last update: 6 years agoFirst release : 29 Mar 2017
App size: 202.66 Mb
Doppler Effect explained in about 2 minutes, relating to water surface waves, sound waves in air, and red shift in space.