Patrick Blackett helped turn the cloud chamber into a selectively triggered particle detector. With Giuseppe Occhialini, he used coincident counter signals to operate the chamber when penetrating particles passed. Magnetic curvature and associated tracks then gave more information than a simple particle count, including evidence relevant to electron-Positron production. The experiment illustrates how triggering can make a slow, detailed recording device useful for rare events.[ref]
Some Photographs of the Tracks of Penetrating Radiation by Patrick Maynard Stuart Blackett and Giuseppe Paolo Stanislao Occhialini. 1933, apparatus and interpretation of associated positive/negative tracks
A physicist.[ref]
https://www.imperial.ac.uk/about/history/past-people/. Independent professional profile
Portrait of Patrick Blackett
. GFHund; photograph from Friedrich Hund’s estate, prepared for Wikipedia in August 2010. CC BY 3.0, via Wikimedia Commons. Source. Articles by others on the same topic
Patrick Blackett (1897-1974) was a notable British physicist and Nobel laureate, recognized for his contributions to the fields of nuclear physics and cosmic rays. He was awarded the Nobel Prize in Physics in 1948 for his work on the detection and measurement of cosmic rays, particularly for his development of the method of using cloud chambers to study high-energy particles. Blackett's research had significant implications for the understanding of particle physics and contributed to the evolution of modern physics theories.