Find number abc
If 70ba9 + a4ccb = 12a197 find number abc. Multiple solutions may exist.Correct answers: 1
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William Wallace CampbellBorn 11 Apr 1862; died 14 Jun 1938 at age 76.American astronomer known particularly for his spectrographic determinations of the radial velocities of stars--i.e., their motions toward the Earth or away from it. In addition, he discovered many spectroscopic binary stars, and in 1924 he published a catalog listing more than 1,000 of them.(EB) |