John Bardeen
has been awarded two Nobel Prizes:
The Nobel Prize in Physics 1956
Prize motivation: "for their researches on semiconductors and their discovery of the transistor effect"
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The Nobel Prize in Physics 1972
Prize motivation: "for their jointly developed theory of superconductivity, usually called the BCS-theory"
More about this prize
![](https://www.nobelprize.org/images/bardeen-13240-portrait-mini.jpg)