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Hertzsprung russell diagrams Meaning in Urdu
Hertzsprung russell diagrams
Meanings
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Hertzsprung russell diagrams Meaning In Urdu with Detail
The Hertzsprung–Russell diagram, abbreviated as H–R diagram, HR diagram or HRD, is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures. The diagram was created independently in around 1910 by Ejnar Hertzsprung and Henry Norris Russell, and represented a major step towards an understanding of stellar evolution.