H And R Diagram. The h r diagram is a scatter graph of stars a plot of stellar absolute magnitude or luminosity versus surface temperature or stellar classification. But for each star you need to measure only two quantities.
Such a plot is frequently called the hertzsprungrussell diagram abbreviated hr diagram. The most surprising thing about the h r diagram was that the stars were not randomly scattered on it but clustered in certain regions and along certain lines. This kind of diagram was named after them as the hertzsprung russell diagram or h r diagram.
The h r diagram is a scatter graph of stars a plot of stellar absolute magnitude or luminosity versus surface temperature or stellar classification.
Equipment scientific calculator pencil highlighter and semi logarithmic graph paper which is provided at. This stage may take a few tens of millions of years. To determine the mass radius and lifetime of a star using the appropriate equations and graphs. The star attains a state of hydrostatic equilibrium and settles down onto the main sequence.