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  1. Oxford American Dictionary

    Hale, George Ellery

    • IPA[ˈhāl]

    美式

    • ph.
      (1868–1938), US astronomer. He discovered that sunspots are associated with strong magnetic fields and invented the spectroheliograph. He also initiated the construction of the 200-inch (5-meter) Hale reflector at Mount Palomar in California.