Lecture- educational program

Doppler effect

About sound

Sound is a physical phenomenon, which is the propagation of mechanical vibrations in the form of elastic waves in a solid, liquid or gaseous medium.

Both the source and the receiver of the sound can move.

Velocity = 0

Velocity = const , Acceleration = 0

Acceleration = const

Acceleration = const

Angular velocity = const

Questions to the audience

Does the Doppler effect answer the question about the shape of the universe? (Yes / no / not given)

Does the Doppler effect answer the question of the expansion of the universe? (yes / no / not given)

Is it possible to determine the number of satellites in a star using the Doppler effect?

(yes / no / not given)

Is it possible to determine the presence of satellites in a star using the Doppler effect?

(yes / no / not given)