Danish physicist (1885–1962) who was awarded the 1922 Nobel Prize in Physics for his theory of atomic structure. Niels Bohr's academic cap worn at the time he went to Cambridge University in 1911 to study under J. J. Thomson of the Cavendish Laboratory, signed on the inner label in ink by Bohr, "Niels Bohr." The black felt hat was manufactured by Ryder & Amies and measures 9.25 x 9.25 x 3.5. In very good condition, with soiling to the signed label, and some insect damage to the fabric on the top of the mortarboard. The vice chancellor at Cambridge has confirmed that the present cap is exactly the type that Bohr wore during his stay. It was later given as a gift by Bohr to a bricklayer at the Bohr Institute in 1945; accompanied by a photo of Bohr and the bricklayer at a Bohr Institute Christmas party in 1944.
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