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Crookes' Radiometer, 1872-1879

1872-1879

Crookes' Radiometer, 1872-1879

1872-1879

Crookes' Radiometer, 1877

1877

Crookes' Radiometer, 1872-1879

1872-1879

Crookes' Radiometer, 1872-1879

1872-1879

Crookes' Radiometer, 1877

1877

Crookes' Radiometer, 1872-1879

1872-1879

Crookes' Radiometer, 1872-1879

1872-1879

Crookes' Radiometer, 1876

1876

Crookes' Radiometer, 1872-1879

1872-1879

Crookes' Radiometer, 1872-1879

1872-1879

Crookes' Radiometer, 1872-1879

1872-1879

Crookes' Radiometer, 1878

1878

Crookes' radiometer with four aluminium vanes coated on one side with clear mica (No. 4)

1878

Radiometer containing a double set of vanes

1876-1895
Radiometer used to illustrate Sir William Crookes' researches on the radiation of heat in high vacua: radiometer with semi-cylindrical vanes, 1872-79.

Crookes' Radiometer, 1872-1879

1872-1879
Radiometer used to illustrate Sir William Crookes' researches on the radiation of heat in high vacua: pith-ball balance in air (the balls are attracted if a flame is brought near), 1872-79.

Crookes' Radiometer, 1872-79

1872-1879