| Edward Wilson | Physician and artist, who died with Scott in the Antarctic. A Caius flag, which he took with him on that ill-fated expedition, now hangs in Hall. |
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| Charles Sherrington |
 | Doctor, President of the Royal Society and distinguished neurophysiologist for which work he was awarded a Nobel prize in 1950. |
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| Charles Wood |
 | Musician and composer, also Director of Music at Caius. |
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| Harold Abrahams | Olympic athlete, immortalised in the film Chariots of Fire, and so one of the most widely-known Caians. |
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| Ronald Fisher |
 | Mathematician, famous mainly for his work on statistics, especially in the field of genetics. |
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| Sir David Salomons |
 | Electrical engineer, automobile pioneer and founder of the RAC. |
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| Sir James Chadwick |
 | Student of Rutherford, and Nobel prize-winning nuclear physicist, discoverer of the neutron. Also Master of the College. |
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| Francis Crick | Nobel prize winner for discovery of the structure of DNA, an important step in the modern science of genetics. |
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Sir Nevill Mott | Nobel prize-winning theoretical physicist and Master of the College. |
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| Joseph Needham | An exceptional rarity for having gained both an FRS (for work in Biochemistry) and FBA (for studies of science and civilisation in China). Founder of the Needham Research Institute. Master of the College. |
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| Stephen Hawking |
 | Mathematician, an important figure in the recent popularisation of Cosmology. His book 'A Brief History of Time' has been a surprise best-seller. |