Henry Norris Russell was born on October 25, 1877, he was an American astronomer who, along with
Ejnar Hertzsprung, developed the Hertzsprung–Russell diagram. In 1923,
working with Frederick Saunders, he developed Russell–Saunders coupling
which is also known as LS coupling. He died on February 18, 1957.
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| photo:www.bigear.org |
