Doppler Effect for EM Waves
The universe has been expanding as observed and verified by theDoppler effect as shown in (Figure 1)
Most of the galaxies in the universe are observed to be movingaway from Earth. Suppose a particular galaxy emits orange lightwith a frequency of 5.000×10^14Hz.
- Learning Goal Doppler Effect For Em Waves The Universe Has Been Expanding As Observed And Verified By The Doppler Effec 1 (79.78 KiB) Viewed 43 times
If the galaxy is receding from Earth with a speed of 3125 km/s, what is the frequency of the light when it reaches Earth? Express your answer using four significant figures. Part B Another galaxy is receding from Earth with an unknown speed. The orange light emitted at a frequency of 5.000×1014 Hz by the galaxy, when reaching the Earth, is observed at a frequency of 4.9283×1014 Hz. What is the receding speed of this galaxy in km/s ? Express your answer using four significant figures.