“M.K.V. Bappu: Discovery of the Bappu-Wilson Effect in Stellar Luminosity (1957)”

M.K.V. Bappu (1927–1982) was one of India’s most influential astronomers and made significant contributions to stellar astrophysics.

Discovered by M.K.V. Bappu and Colin C. Wilson while working at Mount Wilson and Palomar Observatories, USA.

It established a relationship between the luminosity of certain types of stars and specific spectral features in their light.

This effect helps astronomers calculate the luminosity and distance of stars that are difficult to measure directly.

It remains an important tool in stellar classification and distance estimation in modern astrophysics.He played a key role in developing observational astronomy in India.

Founded the Indian Institute of Astrophysics (IIA), Bengaluru.

Led the construction of the Vainu Bappu Observatory in Kavalur, Tamil Nadu, home to the largest optical telescope in Asia.

His work significantly advanced India’s position in global astrophysics, and his legacy continues to inspire Indian astronomers today!

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