What's Doppler Effect? The Doppler Effect was named after Christian Doppler, who came up with the idea in 1842. He thought of the frequency of sound waves when the source or the observer were moving. He said that if one of them were approaching, the ...
redshift | Definition & Facts | Britannica
Redshift and Distance in the Expanding Universe | ScienceBlogs
The Doppler Effect: a measurement technique fit for Nobel prizes – rockyworlds
Warning: This page subject to last-minute changes and additions REVIEW OF SOME ASTRO111 CONCEPTS These concepts will be used extensively in Astro113, and it is important you master them. THERE WILL BE QUESTIONS ON THE EXAMS ABOUT ...