גרנד כיתה גירושין cherenkov radiation doppler effect redshift לצוד להתאבל בדרך כלל
Does the doppler effect happen when the source is moving perpendicularly to the object? Assume the object is stationary and only the source is moving. - Quora
If light speed is independent of the reference frame, then why is the red shift/blue shift of light (Doppler effect) possible? - Quora
How Does Doppler Radar Work?
If the Doppler effect is real, does it mean that light speed in reference to its moving source is slower in the direction of source velocity and faster in the direction opposite