Credit: © The Royal Society
    Image number: RS.8490
    Looking for a special gift? Buy a print of this image.

    Radiometers and otheoscopes

    ca. 1875
    Object type
    Content object
    A collection of radiometers and otheoscopes of varied shapes and sizes. Each comprises a glass cell with a spindle and aluminium vanes attached. In a partial vacuum, the rotor spins when the vanes are exposed to light.

    These instruments were designed by Crookes to measure the mechanical effect of radiant energy. Originally intended to illustrate his papers on 'Repulsion resultion from radiation [...]' published in a the Philosophical Transactions of the Royal Society between 1875-78.

    Sir William Crookes (1832–1919), British chemist and science journalist was elected a Fellow of the Royal Society in 1863 and served as its President between 1913-1915.
    Object history
    Presented to the Royal Society by William Crookes in 1911.
    Related fellows
    William Crookes (1832 - 1919, British) , Knight Chemist, Chemist
    Associated place
    <The World>
       > Europe
          > United Kingdom
    Powered by CollectionsIndex+/CollectionsOnline