Chen Ning Yang — The Man Who Unlocked Symmetry

Hosted by Lester Nare and Krishna Choudhary, this From First Principles deep dive tells the story of Chen Ning Yang, one of the most influential theoretical physicists of the 20th century. From his early days in China to his Nobel-winning discovery of parity violation with Tsung-Dao Lee, Yang’s work on symmetry and gauge theory reshaped modern physics and laid the groundwork for today’s Standard Model. In this episode, Lester and Krishna trace Yang’s intellectual journey — from conversations with Subrahmanyan Chandrasekhar to his insights on gauge fields, topology, and why beauty and symmetry remain the compass of modern science.

Summary

• Early Life & Mentorship — Growing up in China, moving to Chicago, and learning under Fermi and Chandrasekhar.

• Parity Violation — How Yang & Lee overturned one of physics’ sacred assumptions and changed our understanding of nature’s asymmetry.

• Gauge Symmetry & Yang-Mills Fields — The 1954 paper that became the foundation of the Standard Model.

• Legacy & Philosophy — Why Yang believed theoretical beauty is a clue to truth — and how that philosophy continues to shape physics today.