# Carl David Anderson

> American physicist

**Wikidata**: [Q169366](https://www.wikidata.org/wiki/Q169366)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Carl_David_Anderson)  
**Source**: https://4ort.xyz/entity/carl-david-anderson

## Summary
Carl David Anderson was an American physicist renowned for his pioneering work in particle physics. He is best known for his discovery of the positron, for which he was awarded the Nobel Prize in Physics. His research significantly advanced the understanding of subatomic particles and cosmic rays.

## Biography
- **Born**: September 3, 1905
- **Died**: January 11, 1991
- **Nationality**: United States
- **Education**: California Institute of Technology
- **Employer(s)**: California Institute of Technology
- **Occupation**: Physicist, University teacher
- **Field(s)**: Physics, Particle physics

## Contributions
Carl David Anderson conducted foundational research in the field of particle physics. His most significant contribution was the discovery of the positron, a subatomic particle with the same mass as an electron but a positive charge. This discovery, arising from his studies of cosmic rays, provided the first experimental evidence for the existence of antimatter. Throughout his career, he was affiliated with the California Institute of Technology, where he contributed to academic research and education as a university teacher.

## FAQs
**What awards did Carl David Anderson receive?**
Carl David Anderson was awarded the Nobel Prize in Physics for his discovery of the positron. He also received the Elliott Cresson Medal and was named a Fellow of the American Academy of Arts and Sciences.

**Where was Carl David Anderson educated and employed?**
He was educated at the California Institute of Technology and later served as an employee (university teacher) at the same institution.

**What professional organizations was Carl David Anderson a member of?**
He held membership in several prestigious organizations, including the American Academy of Arts and Sciences, the National Academy of Sciences, the American Philosophical Society, the American Association for the Advancement of Science, and the American Physical Society.

## Why They Matter
Carl David Anderson matters for his transformative impact on the field of physics, specifically particle physics. His discovery of the positron validated theoretical predictions about antimatter and expanded the standard model of particle physics. By identifying subatomic particles through cosmic ray research, he opened new avenues for experimental physics. His long-standing affiliation with the California Institute of Technology helped establish the institution as a leader in high-energy physics research.

## Notable For
- **Nobel Prize in Physics**: Awarded for the discovery of the positron.
- **Discovery of the Positron**: First experimental evidence of antimatter.
- **Elliott Cresson Medal**: Recognized for scientific achievement.
- **Fellow of the American Academy of Arts and Sciences**: Honorary fellowship recognizing his contributions.
- **Member of the National Academy of Sciences**: Elected member of the prestigious science branch of the United States National Academies.
- **Member of the American Philosophical Society**: Membership in the esteemed scholarly organization.
- **California Institute of Technology Affiliation**: Both as a student and as a faculty member/employee.

## Body
### Early Life and Education
Carl David Anderson was born on September 3, 1905. He pursued his higher education at the California Institute of Technology (Caltech), a private research university located in Pasadena, California. His educational background at Caltech laid the groundwork for his future career in physics.

### Academic Career
Anderson spent his professional career affiliated with the California Institute of Technology. He worked as a physicist and university teacher. His role involved conducting research in physics and educating students at the university level. Caltech, known for its strength in science and engineering, served as the primary site for his research activities.

### Research and Discoveries
Anderson specialized in particle physics, a branch of physics dealing with the interactions of subatomic particles. His most notable work involved the study of cosmic rays, which led to the discovery of the positron. This finding was a pivotal moment in the history of physics, confirming the existence of antimatter.

### Awards and Honors
Throughout his career, Anderson received numerous accolades:
- **Nobel Prize in Physics**: A yearly physics award given by the Royal Swedish Academy of Sciences, established in 1901.
- **Elliott Cresson Medal**: An American award conferred by the Franklin Institute, established in 1875.
- **Fellow of the American Academy of Arts and Sciences**: An honorary fellowship from the United States honorary society and policy research center.

### Professional Memberships
Anderson was an active member of the scientific community, holding memberships in several key organizations:
- **American Academy of Arts and Sciences**: A United States honorary society and policy research center founded in 1780.
- **National Academy of Sciences**: The science branch of the United States National Academies, founded in 1863.
- **American Philosophical Society**: An American scholarly organization and learned society founded in 1743.
- **American Association for the Advancement of Science**: An international non-profit organization promoting science, founded in 1848.
- **American Physical Society**: A professional organization of physicists, founded in 1899.

### Death
Carl David Anderson passed away on January 11, 1991.

## References

1. Great Soviet Encyclopedia (1969–1978)
2. [Source](http://www.nytimes.com/1991/01/12/obituaries/carl-anderson-physicist-is-dead-co-discoverer-of-positron-was-85.html)
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13. [Source](http://www.nobelprize.org/nobel_prizes/physics/laureates/1936/)
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