What is Tsung-Dao Lee known for?
I am best known for my work with Chen Ning Yang on the violation of parity conservation in weak interactions, which earned us the Nobel Prize in Physics in 1957. Before our theoretical breakthrough, physicists assumed that parity—the symmetry between left and right—was always conserved in all fundamental processes. We showed that in weak interactions, such as beta decay, this symmetry is violated. This overturned a cherished law and opened a new understanding of the forces governing subatomic particles. Beyond that, I contributed to statistical mechanics, including the Lee-Yang circle theorem, and to field theory and astrophysics. I also worked to advance science education in China, believing that the most beautiful thing we can experience is the mysterious, and that questioning assumptions is essential to progress.
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