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George Ellery Hale (June 29, 1868 – February 21, 1938) was an American astrophysicist, best known for his discovery of magnetic fields in sunspots, and as the leader or key figure in the planning or construction of several world-leading telescopes; namely, the 40-inch refracting telescope at Yerkes Observatory, 60-inch Hale ...
George Ellery Hale (Chicago, 29 de junho de 1868 — Pasadena, 21 de fevereiro de 1938) foi um astrónomo estadunidense, especialmente conhecido pelo seu contributo na construção de grandes telescópios.
George Ellery Hale was an American astronomer known for his development of important astronomical instruments, including the Hale Telescope, a 200-inch (508-cm) reflector at the Palomar Observatory, near San Diego. The most effective entrepreneur in 20th-century American astronomy, Hale built four.
Hale's most acclaimed scientific work was his demonstration that sunspots have strong magnetic fields. Hale's Polarity Law shows evidence of the existence of a well-organized large-scale magnetic field in the solar interior that cyclically changes polarity on average every 11 years.
George Hale began studying the solar spectrum as a wealthy teenager in Chicago. As an undergraduate at the Massachusetts Institute of Technology he invented the spectroheliograph.
George Ellery Hale using the spectrograph in the 60 foot solar telescope, where, in 1908, he discovered magnetic fields on the Sun, the key to understanding sunspots and solar weather. The 60-inch saw first light in December 1908, but Hale was already pursuing bigger goals.
29 de jun. de 2018 · When George Ellery Hale climbed Mount Wilson, a nearly 6,000-foot peak rising high above Pasadena, in 1903, he had a vision for building a new and bigger window to the cosmos.
