Electronic devices that exploit the spin of electrons as well as their charge are poised to overcome a major hurdle that could signal the beginning of an electronics revolution. Spintronics, at the interface between magnetism and electroni

909 physicist William Eccles discovered the crystal diode oscillator.[4] Physicist Julius Edgar Lilienfeld filed a patent for a field-effect transistor (FET) in Canada in 1925, which was intended to be a solid-state replacement for the triode.[5][6]