Physics Division Collection

Mass spectrometer, 1954
Mass spectrometer. Researchers adjusting the controls of a mass spectrometer. This is an all-metal demountable mass spectrometer

Mobile physics laboratory. Researchers unloading acoustic and other equipment from a mobile physics laboratory. Photographed in the Physics Division of the National Physical Laboratory, Teddington, UK

Molten steel temperature measurements. Quick immersion thermocouple being used to measure the temperature of liquid steel in an electric-arc furnace

Radiation measurements, 1948
Radiation measurements. Researcher (right) using a Geiger Mueller gamma ray counter to measure the radiation levels in a test subject (left)

Radon measurements, 1948
Radon measurements. Researcher using an alpha-particle ionisation method to measure the radon content of breath samples. Radon is a radioactive gas found in nature

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