Yang Chen-Ning

Yang was a smart man.

He studied tiny parts of our world.

He worked with other smart people. They found out how tiny things move. This helped us learn about how the world works.

He won a very big prize for his work. This prize is called the Nobel Prize. It is for people who help us learn.

Yang was born in China. He later moved to the United States to study. He lived a very long life.

He was 103 years old when he died. Many people came to say thank you for his work.

Yang Chen-Ning was a famous scientist. He studied how the tiniest parts of our world work.

He was born in China in 1922. Later, he moved to the United States to study. He worked at many big schools. One was the University of Chicago. He also worked at Princeton University.

Yang made many big discoveries. In 1953, he worked with Robert Mills. They made the Yang–Mills theory. This theory helps us understand how tiny particles act. In 1957, he won the Nobel Prize in Physics. He shared this prize with Tsung-Dao Lee. They showed that a rule called parity is not always kept. This rule is about how things look in a mirror. Their work changed how we see the world.

Yang lived a very long life. He turned 100 years old in 2022. He died in Beijing in 2025. He was 103 years old. Many people came to honor him. They went to a school in China to say thank you for his work.

Yang Chen-Ning was a famous scientist who studied the smallest parts of our world. He was a theoretical physicist, which means he used math to explain how nature works.

His work helped us understand the forces that hold tiny particles together. He studied many different areas, like how matter behaves and how particles move. Many other scientists used his ideas to win their own Nobel Prizes. He was a very important figure in modern science.

One of his biggest ideas was called Yang–Mills theory. In 1953, he worked with Robert Mills to create this theory. It explains the nuclear forces that act inside tiny particles. This idea is a major part of the Standard Model, which is a big map of how everything in the universe works. He also worked on parity non-conservation. Parity is a rule that says nature should look the same in a mirror. Yang and his partner, Tsung-Dao Lee, showed that this rule is broken during certain weak nuclear reactions. This discovery changed how we think about the laws of physics.

Yang's journey began in Hefei, China, where he was born on October 1, 1922. His father was a mathematician. During his youth, his family moved to several different cities because of a war in China. He studied at National Southwestern Associated University and earned his Bachelor of Science in 1942. Later, he moved to the United States on a scholarship. He studied at the University of Chicago and earned his PhD in 1948. He also spent time working at the Institute for Advanced Study in Princeton.

Throughout his life, Yang achieved many great things. He and Tsung-Dao Lee won the Nobel Prize in Physics in 1957. He became a professor at Stony Brook University in 1965. There, he led the Institute for Theoretical Physics, which is now named after him. He lived to be 103 years old. He passed away in Beijing on October 18, 2025. Even after he died, people gathered at Tsinghua University to honor his long life of discovery.

We can see Yang's influence in many parts of science today. His ideas about how liquids and gases change are still used by researchers. When you learn about how magnets work in special materials, you are seeing his work. His math helps us understand how the tiniest pieces of the universe interact. He showed that even the smallest changes can change our whole view of the world. His life was a long path of asking big questions about nature.

Yang Chen-Ning was a highly influential Chinese-American theoretical physicist. He spent his career exploring the fundamental laws of the universe. Theoretical physics uses mathematical models to explain how nature works. Yang made massive contributions to many scientific fields. These included statistical mechanics, particle physics, and condensed matter physics. His work helped build the foundation for modern science. Many other scientists have cited his research when winning their own Nobel Prizes.

One of his most famous achievements is the Yang–Mills theory. In 1953, Yang collaborated with Robert Mills to develop this idea. It is a type of non-abelian gauge theory. This theory explains how nuclear forces act between subatomic particles. It is a core part of the Standard Model of particle physics. The Standard Model is the primary framework used to describe the universe. Without this theory, our understanding of particle interactions would be incomplete. Yang provided the key ideas for this mathematical structure.

Yang also changed how we understand symmetry in nature. In 1956, he and Tsung-Dao Lee studied the "tau-theta puzzle." This puzzle involved particles that seemed to decay in different ways. Specifically, they looked at parity symmetry. Parity is the idea that physical laws should work the same way in a mirror image. Yang and Lee proposed that parity is not always conserved. They showed that parity is violated during weak nuclear reactions. These are processes that release beta or alpha particles. Their theory was later proven by the Wu experiment in 1956. This discovery earned them the Nobel Prize in Physics in 1957.

Yang's academic journey began in Hefei, China, in 1922. His father was a mathematician, which likely influenced his path. During the Sino-Japanese War, his family moved frequently. They lived in Beiping, Hefei, and Kunming. He studied at National Southwestern Associated University. He earned his Bachelor of Science in 1942. Later, he received a scholarship to study in the United States. He earned his Doctor of Philosophy from the University of Chicago in 1948. He also conducted important research at the Institute for Advanced Study in Princeton.

Throughout his long career, Yang held many prestigious positions. He moved to Stony Brook University in 1965. There, he served as the Albert Einstein Professor of Physics. He also became the first director of the Institute for Theoretical Physics. Today, that institute is named the C. N. Yang Institute for Theoretical Physics. After retiring from Stony Brook in 1999, he returned to China. He became an honorary director at Tsinghua University. He also helped establish the Theoretical Physics Division at the Chern Institute of Mathematics in 1986.

Yang's scientific impact can be measured by his many "seminal contributions." These are foundational works that change a field of study. For example, he worked on the Lee–Yang theory regarding phase transitions. This describes how liquids and gases change states. He also contributed to the study of superconductors. He and Nina Byers developed the Byers–Yang theorem. This theorem explains how magnetic flux behaves in a superconducting ring. His work on the Yang–Baxter equation helped describe how particles scatter in one dimension. These diverse ideas connect different branches of mathematics and physics.

Yang lived a very long and active life. He reached the age of 100 in 2022. He passed away in Beijing on October 18, 2025, at age 103. His legacy remains visible in modern laboratories around the world. Even after his death, students and scientists gathered at Tsinghua University to pay tribute. His life showed how mathematical thinking can reveal the deepest secrets of reality. From the smallest particles to the largest systems, his ideas still guide us.