Few physicists have left as vivid a mark on both science and popular culture as Richard Feynman. A Nobel laureate, bongo-drum player, and safecracker, he approached physics with a blend of rigor and joy that still inspires students and researchers alike.
Born: May 11, 1918, New York City · Died: February 15, 1988, Los Angeles · Nobel Prize: Physics, 1965 (shared) · PhD: Princeton University, 1942 · Known For: Quantum electrodynamics, Feynman diagrams, Challenger investigation
Quick snapshot
- Born 1918 in New York City (Britannica)
- Nobel Prize in Physics 1965 (Nobel Prize committee)
- Developed Feynman diagrams (Britannica)
- Worked on Manhattan Project (RichardFeynman.com biography)
- Exact IQ score (reported as 125, no official record)
- Whether he had ADHD (no formal diagnosis)
- Full context of Einstein’s supposed comment to Feynman
- Born 1918 → Nobel 1965 → Challenger investigation 1986 → died 1988 (Britannica)
- Feynman’s teaching methods continue to influence online learning platforms and science communication
Six key facts about Feynman, from his full name to his lasting impact.
| Full Name | Richard Phillips Feynman |
| Born | May 11, 1918, Far Rockaway, New York |
| Died | February 15, 1988, Los Angeles, California |
| Education | B.S. MIT (1939), Ph.D. Princeton (1942) |
| Nobel Prize | Physics, 1965 (shared with Schwinger and Tomonaga) |
| Known For | Quantum electrodynamics, Feynman diagrams, Feynman Lectures, Challenger commission |
What was Richard Feynman most famous for?
Contributions to Quantum Electrodynamics
Feynman shared the 1965 Nobel Prize in Physics with Julian Schwinger and Shin’ichirō Tomonaga for their fundamental work in quantum electrodynamics (QED) (Nobel Prize committee). QED describes how light and matter interact at the quantum level. Feynman’s Nobel lecture, “The Development of the Space-Time View of Quantum Electrodynamics,” laid out his unique approach (Nobel Foundation).
Feynman Diagrams
He invented Feynman diagrams, a pictorial method that simplifies complex particle interactions (Britannica). These diagrams became a standard tool in theoretical physics, making calculations more intuitive.
Role in the Manhattan Project
During World War II, Feynman worked at Los Alamos as a group leader on the Manhattan Project, contributing to the atomic bomb development (RichardFeynman.com biography).
Feynman Lectures on Physics
After joining Caltech in 1950, Feynman developed The Feynman Lectures on Physics, a three-volume series that remains among the most popular physics textbooks ever published (RichardFeynman.com biography).
What was the IQ of Feynman?
Estimated IQ Scores
Feynman’s IQ is often reported as around 125, though this number came from a non-standard test and he himself dismissed intelligence tests as irrelevant to creativity. No definitive record exists.
ADHD Speculation
Some biographers have noted traits consistent with ADHD — intense focus on topics he loved, restlessness with routine, and a playful, unconventional style. However, he was never formally diagnosed.
Feynman’s fascination with IQ reveals an irony: a man who rejected intellectual labels remains endlessly measured by them. The number 125 says more about the limits of testing than about his mind.
The implication: his intellectual reputation rests on achievements, not a test score.
What was Richard Feynman’s most famous quote?
“What I Cannot Create, I Do Not Understand”
This phrase was found on his blackboard at the time of his death in 1988 (Wikiquote). It encapsulates his belief that true understanding demands the ability to reconstruct an idea from first principles.
“The First Principle Is That You Must Not Fool Yourself”
Delivered in his 1974 Caltech commencement address, this caution against self-deception became a cornerstone of his scientific philosophy (Wikiquote).
“I’d Rather Have Questions That Can’t Be Answered”
This quote captures his belief that open curiosity is more valuable than settled answers — a theme that runs through his entire career.
These quotes aren’t just catchy phrases; they are operational principles. They shape how Feynman taught, how he investigated the Challenger disaster, and how he approached every problem.
Did Richard Feynman love his wife?
Arline Greenbaum: Their Marriage
Feynman married Arline Greenbaum in 1942, despite her diagnosis of tuberculosis (RichardFeynman.com biography). She died in 1945, a loss that deeply affected him.
The Love Letter After Her Death
Sixteen months after her death, Feynman wrote a heart-wrenching letter to Arline, expressing undying love (RichardFeynman.com biography). The letter was sealed until after his death.
Feynman’s Later Relationships
He married Gweneth Howarth in 1960 and had two children, Carl and Michelle (RichardFeynman.com biography). Yet Arline remained a significant figure in his emotional life.
The same man who could dismantle the deepest mysteries of the universe was utterly vulnerable in love. His letters to Arline reveal a tenderness that many fans don’t associate with the brash, confident public figure.
Why is 137 so important?
The Fine-Structure Constant
The fine-structure constant α has a value of approximately 1/137.036 (Wikipedia). It is a dimensionless number that determines the strength of the electromagnetic interaction.
Feynman’s Fascination
Feynman called it “a magic number” and “one of the greatest damn mysteries of physics” (Wikipedia). He often wrote 137 on his blackboard and encouraged students to ponder why it has that value.
The Number 137 in Physics
No theory fully explains the fine-structure constant’s value. It remains one of the biggest open questions in theoretical physics, driving research into unification and fundamental constants.
Timeline
- 1918: Born in New York City
- 1939: B.S. in Physics from MIT
- 1942: Ph.D. from Princeton; marries Arline Greenbaum
- 1942–1945: Worked on Manhattan Project at Los Alamos
- 1945: Arline dies of tuberculosis
- 1965: Awarded Nobel Prize in Physics
- 1986: Appointed to Rogers Commission investigating Challenger disaster
- 1988: Dies of abdominal cancer
The pattern: Feynman’s life accelerated from brilliant student to wartime scientist to Nobel laureate, but the human costs — Arline’s death, the moral weight of the bomb — never left him.
Confirmed facts
- Nobel Prize in Physics 1965
- Manhattan Project involvement
- Feynman diagrams widely accepted
- Cause of death: abdominal cancer (Britannica)
What’s unclear
- Exact IQ score (reported as 125 but never officially tested)
- Whether he had ADHD (no formal diagnosis, but traits noted by biographers)
- The full context of Einstein’s supposed comment to Feynman
“What I cannot create, I do not understand.”
— Richard Feynman, written on his blackboard at the time of his death
“The first principle is that you must not fool yourself — and you are the easiest person to fool.”
— Richard Feynman, 1974 Caltech commencement address
“I’d rather have questions that can’t be answered than answers that can’t be questioned.”
— Richard Feynman, interview (exact year unknown)
Feynman’s life ended at 69, but the questions he raised — about QED, about learning, about the value of doubt — continue to energize physics and education. For the student who picks up The Feynman Lectures or the scientist who sketches a Feynman diagram, the choice is clear: embrace uncertainty as a tool, or risk fooling yourself.
ahf.nuclearmuseum.org, instagram.com, icr.org, youtube.com, fs.blog, en.wikipedia.org, readingfeynman.org, reddit.com
Frequently asked questions
What is the Feynman technique for learning?
The Feynman technique involves explaining a concept in simple language as if teaching it to a beginner. If you can’t simplify it, you don’t understand it well enough.
What books did Richard Feynman write?
He wrote The Feynman Lectures on Physics, Surely You’re Joking, Mr. Feynman!, What Do You Care What Other People Think?, The Character of Physical Law, and QED: The Strange Theory of Light and Matter.
What was Richard Feynman’s education?
He earned a B.S. from MIT in 1939 and a Ph.D. from Princeton University in 1942.
How did Richard Feynman die?
He died of abdominal cancer (a rare form) on February 15, 1988, in Los Angeles.
What did Richard Feynman do at Los Alamos?
He worked as a group leader in theoretical physics on the Manhattan Project, helping develop the atomic bomb.
What awards did Feynman win besides the Nobel?
He received the Albert Einstein Award, the Oersted Medal for teaching, and the National Medal of Science, among others.
Did Feynman have any children?
Yes, he had a son Carl (born 1962) and a daughter Michelle (born 1968) with his second wife Gweneth Howarth.
Daniel Harper is Editor-in-Chief at Coast Pulse, overseeing editorial standards, publication decisions and corrections.