What is Luminosity?

What is Bolometric Luminosity?

What is the effective temperature?

What equation relates luminosity and temperature?

What is the mass of the sun?

What is the range of mass of a star

How do you directly measure the mass of a star?

How to you calculate the mass of a single star?

How is the radii of a star defined?

What is the Sun's radius?

What is a WD and RG radius?

How are radii measured?

What is spectroscopy?

What is spectral classification? Included hottest, coolest and the Sun.

What is Wein's displacement law?