Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Lattes Cesare F2

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Lattes Cesare F2

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Image title: 
Lattes and Gardner with cyclotron
Credit line: 
Lawrence Berkeley National Laboratory, courtesy AIP Emilio Segrè Visual Archives

Caption reads: "Using the 184-inch cyclotron, scientists at the University of California's Lawrence Radiation Laboratory discovered the first man-made mesons. Dr. Cesare Lattes, left, Brazilian scientist, and the late Dr. Eugene Gardner, physicist in the Berkeley Laboratory, are show placing photoemulsions on the target probe of the 184-inch cyclotron. The particles were produced by bombarding targets of beryllium and carbon with 380 million electron volt alpha particles. The photoemulsion plates were so placed that the pi mesons passed through them, making a track. Tracks of the the pi mesons were observed for the first time on February 21, 1948."

Photo date: 
circa March 1948
Original format: 
1 photographic print (black and white; 6.5 x 4.5 inches)
Lattes, Cesare Mansueto
Gardner, Eugene