Definition of Russell, Henry Norris in English:

Russell, Henry Norris

Line breaks: Henry Nor¦ris Rus|sell
Pronunciation: /ˈrʌs(ə)l
( 1877–1957), American astronomer. He worked mainly in astrophysics and spectroscopy, and is best known for his independent discovery of the relationship between stellar magnitude and spectral type, which he represented diagrammatically. See Hertzsprung–Russell diagram.

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Word of the day demoralize
Pronunciation: dɪˈmɒrəlʌɪz
cause (someone) to lose confidence or hope