Hint  Answer 
1954, statistical studies of atomic wave functions  
1954, invention of the coincidence method  
1955, measurement of the magnetic moment of the electron  
1955, discoveries in the hydrogen spectrum  
1956, investigations on semiconductors and invention of the transistor  
1957, discovery of violations of the principle of parity  
1958, discovery and interpretation of Cherenkov effect  
1959, confirmation of the existence of the antiproton  
1960, development of the bubble chamber  
1961, determination of the shape and size of atomic nucleons  
1961, discovery of the MÃ¶ssbauer effect  
1962, contributions to the understanding of condensed states of matter  
1963, development of the shell model theory of the structure of atomic nuclei  
 Hint  Answer 
1963, principles governing interaction of protons and neutrons in the nucleus  
1964, work in quantum electronics leading to construction of instruments based on maserlaser principles  
1965, basic principles of quantum electrodynamics  
1966, discovery of optical methods for studying Hertzian resonances in atoms  
1967, discoveries concerning the energy production of stars  
1968, work with elementary particles, discovery of resonance states  
1969, classification of elementary particles and their interactions  
1970, work in magnetohydrodynamics and in antiferromagnetism and ferrimagnetism  
1971, invention of holography  
1972, development of the theory of superconductivity  
1973, tunneling in semiconductors and superconductors  
1974, work in radio astronomy  

Show Comments