Hydrostatic balance by Jesse Ramsden, London, 1785-1789

Automatic Computing Engine (ACE) simulator, 1950

Yearbook of the Royal Society including entry on Stephen Hawking

Yearbook of the Royal Society including entry on Stephen Hawking

Yearbook of the Royal Society including entry on Stephen Hawking

Photogaphic print and diagram, showing showing secondary beta-rays ejected from air and from a copper screen by X-rays

Diagram showing apparatus for formation of helium by the accumulation of alpha-particles emitted from emanation

Diagram showing disintegration by bombardment with alpha-particles

Record showing string electrometer connected to an electrical counter

Black and white photographic print, showing the production of a pair of electrons, positive and negative

Photogaphic print and diagram, showing secondary beta-ray ejected from copper by X-rays together with a secondary beta-ray due to copper K-radiation

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