811Which astronomer formulated the three fundamental laws describing the motion of planets around the Sun?
812Which physicist developed a unified set of equations describing electricity, magnetism, and light as related phenomena?
813Which inventor is best known for developing the first commercially practical incandescent light bulb?
814Which inventor and engineer is best known for his major contributions to the alternating current, or AC, electrical system?
815Which inventor is widely credited with inventing the telephone?
816Which two brothers are widely credited with achieving the first successful powered airplane flight in 1903?
817Which inventor is widely credited with pioneering long-distance wireless radio transmission?
818Which physicist is credited with discovering X-rays, earning him the first Nobel Prize in Physics?
819Which physicist is credited with discovering the atomic nucleus through his famous gold foil scattering experiment?
820Which physicist proposed an atomic model in which electrons orbit the nucleus in fixed, distinct energy levels?
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