Question

The Hertzsprung-Russel diagram is used to show the relationship between which two characteristics of stars?

Answer 1

The Hertzsprung- Russel diagram is used to how the relationship between the absolute magnitudes of stars and their effective temperatures. 

Answer 2

Absolute Magnitude (Luminosity) and Spectral class (Temperature)

Step-by-step explanation:

Hertzsprung-Russell diagram, popularly known as HR Diagram, shows the relation between the absolute magnitude (or Luminosity) and temperature of stars (spectral class). HR diagram helps in understanding the stellar evolution. One can predict the life-cycle of a star with the help of this plot. One can see, with the help of HR Diagram, that stars spend 90% of their life time in main sequence stage where the fusion of Hydrogen takes place in the core.

Ejnar Hertzsprung and Henry Norris Russell created this plot in 1910.