Nobel Physicist Rabi Dies at 89

NEW YORK —  I. I. Rabi, a physicist who won the Nobel prize in 1944 and helped develop radar and the atomic bomb, died today after a long illness. He was 89. Rabi, who died at his home, was the former chairman of the physics department at Columbia University. He won his Nobel for his discovery and measurement of radio-frequency spectra of atomic nuclei whose magnetic spin has been disturbed.