File:Leo Esaki 1959.jpgDescriptionLeo Esaki 1959.jpg Japanese physicist Reona Esaki of Sony displays the 'Esaki Diode' on December 29, 1959, in Tokyo, Japan Date 29 December 1959 Source
File:Leo Esaki 1959b.jpgDescriptionLeo Esaki 1959b.jpg Japanese physicist Reona Esaki, also known as Leo Esaki works at Sony on June 27, 1959 in Tokyo, Japan Date 27 June 1959 Source
