Sir Peter Bernhard Hirsch HonFRMS FRS (born 16 January 1925) is a British metallurgist who has made fundamental contributions to the application of transmission electron microscopy to metals.
[4] Hirsch attended Sloane Grammar School, Chelsea, and St Catharine's College, Cambridge.
In the mid-1950s, he pioneered the application of transmission electron microscopy (TEM) to metals and developed in detail the theory needed to interpret such images.
In 1965, with Howie, Whelan, Pashley and Nicholson, he published the text Electron microscopy of thin crystals.
Hirsch was elected a member of the National Academy of Engineering in 2001 for experimentally establishing the role of dislocations in plastic flow and of electron microscopy as a tool for materials research.