Which of the following best describes the process of spectral dispersion?
Question 2
What is the primary physical process responsible for the formation of absorption lines in a stellar spectrum?
Question 3
Which of the following factors primarily influences the width of spectral lines observed from an astronomical source?
Question 4
If a spectral line with a rest wavelength ($\lambda_0$) of $ 656.3 \text{ nm} $ (Hydrogen-alpha) is observed from a distant galaxy at a wavelength ($\lambda$) of $ 660.0 \text{ nm} $, and the speed of light (c) is $ 3 \times 10^8 \text{ m/s} $, what is the approximate radial velocity (v) of the galaxy? Use the non-relativistic Doppler shift formula: $ \frac{\Delta\lambda}{\lambda_0} = \frac{v}{c} $.
Question 5
What is the primary difference between spectral resolution and spectral dispersion?
