Electromagnetic (e/m) cathode ray tube, by Sir Joseph John Thomson, Cambridge, England, 1896. Part of the J.J. Thomson's original e/m cathode ray tube apparatus, for measuring the velocity of the cathode rays and the ratio of the mass of the carriers to the charge carried by them. J J Thomson's Electromagnetic Tube used in the Discovery of the Electron, about 1896 Nuclear Physics 1896
Prototype ARM610 microchip, manufactured by Advance RISC Machines Limited, Cambridge, England, 1992 ARM610 microchip, 1992 Telecommunications 1992
Main part of a working model of a differential analyser constructed from the construction toy, Meccano, made by Professor Douglas Hartree and Arthur Porter at University of Manchester, England, 1934. Reconstructed by Prof. Douglas Hartree at University of Cambridge, England, 1947 Meccano differential analyser, 1947 Mathematics 1934; 1947
