Wilson Bappu effect

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• Wilson-Bappu effect — In 1957 Olin C. Wilson and M. K. Vainu Bappu reported on the remarkable correlation between the measured width of the emission feature at the center of the Ca II K line and the absolute visual magnitude of the star. This is known as the Wilson… …   Wikipedia

• Vainu Bappu — A photograph of M.K.V. Bappu. Manali Kallat Vainu Bappu (August 10, 1927 – August 19, 1982) was an Indian astronomer and president of the International Astronomical Union. Bappu helped establish several astronomical institutions in India… …   Wikipedia

• Olin Chaddock Wilson — (January 13, 1909 – July 13, 1994) was an American astronomer best known for his work as a stellar spectroscopist. Born in San Francisco, CA as the son of a lawyer, Wilson showed an interest in physics at an early age. He studied astronomy and… …   Wikipedia

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• Extragalactic distance scale — The extragalactic distance scale is a series of techniques used today by astronomers to determine the distance of cosmological bodies (beyond our own galaxy) not easily obtained with traditional methods. Some procedures utilize properties of… …   Wikipedia

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• List of effects — This is a list of names for observable phenonema that contain the word effect, amplified by reference(s) to their respective fields of study. #*3D audio effect (audio effects)A*Accelerator effect (economics) *Accordion effect (physics) (waves)… …   Wikipedia

• Meanings of minor planet names: 12001–13000 — As minor planet discoveries are confirmed, they are given a permanent number by the IAU s Minor Planet Center, and the discoverers can then submit names for them, following the IAU s naming conventions. The list below concerns those minor planets …   Wikipedia