H-R Diagram Lab – Astronomy

| February 16, 2015

Around 1911 to 1913, a Dutch astronomer named Ejnar Hertzsprung and an American astronomer Henry Norris Russell created a diagram of stars plotted using only their luminosity and their spectral types. A star’s spectral type is determined by the absorption lines found in its spectrum. Hertzsprung and Russell noticed that the spectra were related to the stars’ color and temperature. Their diagram, named the Hertzsprung-Russell, or H-R, diagram in their honor, has been like a Rosetta Stone to stellar astronomy.



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Physics assignment
Why do I want to study in the program of politics and governance and what influenced my decision to apply to the program, (keep in my mind I want to justify that I stopped attending class on the fall of 2013 because I was not in a good place in my life)

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