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Experimental notes, working papers, correspondence and lecture summaries compiled by Charles Wheatstone, 1836-1875, and photographs collected by him in that period. Notably including papers relating to the development and testing of the telegraph, [1836-1960]; descriptions of experiments and test results concerning the measurement of electromotive forces and electrical potential, [1840-1875]; experimental observations on the nature of magnetism, electricity and thermodynamics, including electromagnet design, batteries and dynamos, [1834-1855]; working papers relating to optics including experiments into refraction, colouration of compounds and polarisation, [1850-1875]; drafts of lectures on sound and musical instruments prepared by Wheatstone, [1832-1837]; material relating to the management of the Wheatstone collection of scientific instruments and library, 1890-1992; biographical material relating to the life of Wheatstone, the invention of the telegraph and Wheatstone's musical instrument manufacturing business, with unrelated newspapers, 1757-1975; stereoscopic photographs and glass negatives taken by Roger Fenton, Samuel Buckle, Jules Duboscq and others, featuring landscapes, still lifes, panoramic scenes of cities including Paris and Moscow and the interior and exterior of the Crystal Palace, Hyde Park, Sydenham, 1851, and especially the Exposition Universelle, Paris, 1855, [1850-1901]; artefacts on loan from Department of Physics, King's College London, including telegraph apparatus, a nail fiddle and other prototype musical instruments, [1834-1875]; exhibition of scientific and musical instruments, [1834-1875].

The papers of John Pearson comprise manuscript notebooks of lectures and experimental write-ups compiled by Pearson when he was a student at Chelsea Polytechnic, 1954-1957, and include notes on electricity, optics, electronics and circuit theory, electromagnetic theory, diffraction gratings, wave mechanics and X-ray physics.

Papers relating to Outteridge's teaching work at King's College London, 1950-1982, notably teaching and tutorial notes on subjects mainly relating to radiation physics and radiation protection, 1965-1972; texts of lectures on radiation physics written for the Borough Polytechnic, London, 1954-1957 and 1960-[1967]; copies of exam papers for physics and electronics subjects at King's College London, 1969-1982; papers concerning research grants and students, [1970-1980], including a PhD thesis by B L Diffey on 'The spectral distribution of X rays and gamma radiation resulting from multiple Compton scattering', Jun 1973; notes on various computer programmes, and work undertaken with them, [1978]; copies of articles and lectures by Outteridge and others, notably 'A print-out system for scaling units using neon indicators' with K C Lightowlers, 'Photon fluences resulting from multiple Compton scattering' with B L Diffey of Kent and Canterbury Hospital, and articles, 1950-1957, on the conductivity and electron counting properties of diamonds, mainly by Frank Clive Champion, Wheatstone Physics Laboratory; minutes and agendas of the Faculty of Natural Science, 1970-1981, and the Non-Professional Staff Committee, 1975-1978. Papers, 1952-1954, relating to Outteridge's work at the Atomic Energy Research Establishment, Harwell, notably press cuttings relating to work done there, 1952-1953, a teaching manual written by Outteridge on 'The Isotope School Experimental Course in Radioisotope Techniques', 1954, and a set of articles written by Outteridge whilst at Harwell. Papers relating to Outteridge's work as Radiation Protection Officer for King's College, [1971-1988], including information files regarding his duties, 1984-1985; working papers, [1971]-1982; reports from the British Radiation Protection Association, the British Radiological Protection Association and the Institute of Radiological Protection, [1971-1986]; papers and reports, 1962-[1988], of the Association of University Radiation Protection Officers (AURPO), including rules, constitution, AGM papers and newsletters.

Collection comprising three manuscript notebooks of theoretical problems relating to mechanics compiled by James Clerk Maxwell mainly during his employment at King's College London, including exam questions on aspects of mechanics and geometry, 1860-1865; problems on the collision of elastic spheres and the dynamic relation between other solid bodies; the refraction of light; the relationship between heat and volume in materials; attraction between particles, 1860-1873; notes on the works of leading authorities on mathematics and physics including Arthur Cayley, Franz Neumann and Siméon Poisson, 1867-1873; bibliography of textbooks mainly on mechanics, [1860-1865]; list of scientific instrument suppliers, [1860-1865]; outline of the contents of Maxwell's Treatise on electricity and magnetism (1873).

Chelsea Polytechnic, Chelsea College of Science and Technology and Chelsea College Department of Electrical Engineering Records, 1968-1996. This series comprises correspondence with overseas research workers, 1990-1996; rough and fair copy teaching notes and handouts for students on courses taught by John Pearson and others on electronic devices, electromagnetism, circuits and control systems, microwave engineering and communications theory, 1972-1995; tape recordings of lectures on electronic devices, [1975]; Departmental research reports, 1989-1995; papers concerning a reunion of Chelsea Electronics graduates, 1985; incomplete set of examination question papers in Electronics and related disciplines, 1968-1993; group photographs of graduates, 1970-1980, 1985-1986, 1989, 1995; histories of the Electronics Department and other memorabilia, 1977-1978.

The papers of John Edmund Bowen consist of two manuscript notebooks containing notes on lectures delivered by Professor Joseph John Thomson, Cavendish Professor of Physics at Cambridge, 1911-1912. Bowen's notes consist of detailed summaries of Thomson's lectures on subjects including the discharge of electricity through gases, recombination of ions, recent developments in researches on light and electricity, scattering of electromagnetic radiation and the quantum theory of light.