| Nomination for Nobel Prize in Physics | 
| Year: | 1950 | 
| Number: | 40 - 2 | 
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| Nominee 1: 
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| Name: | Felix  Bloch | 
| Gender: | M | 
| Year, Birth: | 1905 | 
| Year, Death: | 1983 | 
| University: | Stanford University | 
| City: | Stanford | 
| State: | CA | 
| Country: | UNITED STATES (US) | 
| Awarded the Nobel Prize in Physics 1952 | 
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| Nominee 2: 
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| Name: | Edward M Purcell | 
| Gender: | M | 
| Year, Birth: | 1912 | 
| Year, Death: | 1997 | 
| University: | Harvard University | 
| City: | Cambridge | 
| State: | MA | 
| Country: | UNITED STATES (US) | 
| Awarded the Nobel Prize in Physics 1952 | 
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| Nominator: 
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| Name: | Alfred  Kastler | 
| Gender: | M | 
| Year, Birth: | 1902 | 
| Year, Death: | 1984 | 
| Profession: | chairholder at invited university,  NP phy 1966 | 
| City: | Paris | 
| Country: | FRANCE (FR) | 
| Awarded the Nobel Prize in Physics 1966 | 
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