To keep it simple, I discuss a calibrated H-R diagram, where all the stars are plotted according to true brightness. ... The bigger the star, the more surface area it has, and every square inch (or square centimeter) of the surface produces light.
|Title||:||Astronomy For Dummies|
|Author||:||Stephen P. Maran|
|Publisher||:||John Wiley & Sons - 2010-03-11|