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Hertzian oscillator, 1890-1894

1890-1894

Knochenhauer spirals, 1963

1963

Deeley friction machine

Carbon dioxide analyser used at Greenhouse Gas Laboratory, Royal Holloway

1990-1996

Neutron Beam Guide section from the Instit Laue - Langevin

1980

King George III's archimedean screw

1762

Apparatus for 'Oil of Oranges' Experiment

1762

Set of sine and cosine Lipson-Beevers Strips

1960-1965

Mercury Electric Contact

1840-1880

Lipson-Beevers Strips

1960-1965

Set of Lipson-Beevers Strips

1960-1965

Replica of Original Hertz Screen for Polarisation

1928-1929

Lipson-Beevers Strips

1934; 1934

Reduction gas detector used at the Greenhouse Gas Laboratory, Royal Holloway

1990-1996

Seven 1/4 scale models of apparatus used by Heinrich Hertz, 1949

1949

Gas chromatograph used at Greenhouse Gas Laboratory, Royal Holloway

1990-1996

rolling double cone and arms

1740-1760
Torsion balance with photographic recording, main unit with wooden case, serial no. 20420, L. Oertling Ltd., London, UK, 1925. Used for geophysical prospecting through gravitational methods, the instrument is based on a design by Hungarian physicist Loránd Eötvös. It is believed to have been purchased in 1927 for field trials in Britain by the Geological Survey, and modified by the National Physical Laboratory the following year. In 1931 it was transferred to the newly-founded department of applied geophysics at Imperial College, forming part of their suite of apparatus for practical education in applied geophysics.

Eötvös torsion balance by L. Oertling Ltd, 1925

1925
Torsion balance with photographic recording, serial no. 20125, L. Oertling Ltd., London, UK, 1925. Used for geophysical prospecting through gravitational methods, the instrument is based on a design by Hungarian physicist Loránd Eötvös.

Eötvös torsion balance by L. Oertling Ltd, 1925

1925