César Lattes
A Brazilian experimentalist who, as a young researcher, played a crucial role in detecting the pion, a fundamental particle that holds atomic nuclei together.
1924–2005 (age 81)·Brazilian physicist·Birthday: July 11·The Greatest Generation
Biography
César Lattes was a figure of immense national pride in Brazil, a hands-on physicist who made a landmark discovery before he turned 25. In 1947, working with Cecil Powell at the University of Bristol, Lattes's practical genius was key. He prepared the special photographic emulsions that, when exposed to cosmic rays high in the Bolivian Andes, revealed the telltale tracks of a new particle: the pi-meson, or pion. This particle, theorized by Hideki Yukawa, was the carrier of the strong force that binds atomic nuclei. Lattes's work provided the first concrete evidence for Yukawa's theory, catapulting him to fame. He returned to Brazil, where he became a tireless institution-builder, founding major research centers and fighting to establish a credible scientific culture in a country that often overlooked its own intellectual potential.
The Greatest Generation
1901–1927
Grew up during the Depression, fought World War II, and built the postwar economic boom. Defined by shared sacrifice, institutional trust, and a belief that hard work and loyalty would be rewarded.
César was born in 1924, placing them squarely in The Greatest Generation. The events that shaped this generation — world wars, depression, and rapid industrialization — shaped the world they entered and the choices available to them.
#1 When César Was Born
The biggest hits of 1924
#1 Movie
The Sea Hawk
César's Life & Times
The world at every milestone
1924Born
First Winter Olympics held in Chamonix, France
President: Calvin Coolidge"It Had to Be You" — Isham Jones
1929Started school
Wall Street crashes, triggering the Great Depression
Gas: $0.21/galPresident: Herbert Hoover"Singin' in the Rain" — Cliff EdwardsBest Picture: The Broadway Melody
1937Became a teenager
Hindenburg disaster; Golden Gate Bridge opens
Gas: $0.20/galPresident: Franklin D. Roosevelt"A-Tisket, A-Tasket" — Ella FitzgeraldBest Picture: The Life of Emile Zola
1940Could drive
The Blitz: Germany bombs London
Gas: $0.18/galHome: $2,938Min wage: $0.30/hrPresident: Franklin D. Roosevelt"I'll Never Smile Again" — Tommy DorseyBest Picture: Rebecca
1942Could vote
Battle of Midway turns the tide in the Pacific
Gas: $0.20/galHome: $3,175Min wage: $0.30/hrPresident: Franklin D. Roosevelt"White Christmas" — Bing CrosbyBest Picture: Mrs. Miniver
1945Turned 21
WWII ends; atomic bombs dropped on Hiroshima and Nagasaki
Gas: $0.21/galHome: $4,600Min wage: $0.40/hrPresident: Harry S. Truman"Sentimental Journey" — Les Brown & Doris DayBest Picture: The Lost Weekend
1954Turned 30
Brown v. Board of Education desegregates US schools
Gas: $0.29/galHome: $8,925Min wage: $0.75/hrPresident: Dwight D. Eisenhower"Little Things Mean a Lot" — Kitty KallenBest Picture: On the Waterfront
1964Turned 40
Civil Rights Act signed; Beatles arrive in America
Gas: $0.30/galHome: $13,450Min wage: $1.25/hrPresident: Lyndon B. Johnson"I Want to Hold Your Hand" — The BeatlesBest Picture: My Fair Lady
1974Turned 50
Nixon resigns the presidency
Gas: $0.53/galHome: $22,600Min wage: $2.00/hrPresident: Gerald Ford"The Way We Were" — Barbra StreisandBest Picture: The Godfather Part II
1984Turned 60
Apple Macintosh introduced
Gas: $1.13/galHome: $59,800Min wage: $3.35/hrPresident: Ronald Reagan"When Doves Cry" — PrinceBest Picture: Amadeus
1994Turned 70
Nelson Mandela elected president of South Africa
Gas: $1.11/galHome: $90,400Min wage: $4.25/hrPresident: Bill Clinton"The Sign" — Ace of BaseBest Picture: Forrest Gump
2004Turned 80
Indian Ocean tsunami kills over 230,000
Gas: $1.88/galHome: $157,300Min wage: $5.15/hrPresident: George W. Bush"Yeah!" — UsherBest Picture: Million Dollar Baby
2005Died at 81
Hurricane Katrina devastates New Orleans; YouTube launches
Gas: $2.30/galHome: $167,500Min wage: $5.15/hrPresident: George W. Bush"We Belong Together" — Mariah CareyBest Picture: Crash
Key Achievements
- His experimental work with photographic emulsions was instrumental in the 1947 discovery of the pion (pi-meson).
- Co-founded the Brazilian Center for Physics Research (CBPF), a leading scientific institute in Rio de Janeiro.
- Was a driving force behind the creation of the University of Campinas (UNICAMP) and its respected physics program.
- His early discovery made him one of the most famous scientists in Latin American history.
Did You Know?
He was only 23 years old when he contributed to the pion discovery.
He reportedly added boron to the photographic emulsions, a crucial step for capturing the particle's interactions.
His face appeared on the 50-centavo Brazilian banknote in the 1980s and 1990s.
He turned down an invitation to work on the Manhattan Project during World War II.
“Science is not done with expensive apparatus, but with ideas.”
