Electron diffraction camera, 1925.
1925
Model of sodium atom, c 1911
1911-1926
Model of hydrogen atom, c 1911
1911-1926
Back wound betatron magnet by British Thomson-Houston Co. Ltd., 1947
1947
Model of sodium chloride crystal, c 1912
1912-1926
Gaede 3-stage metal diffusion pump
1915-1927
Model of lithium atom, c 1911
1911-1926
Model of helium atom, c 1911
1911-1926