Radiometers and otheoscopes Finish:Single To the left of them

To the left of them an elegant carriage advances from south London into Southwark

Bird's-eye view of Christ's Hospital

View of Middle and Inner Temple

23rd September 1962

Radiometers and otheoscopes Finish:Single To the left of themRadiometers and otheoscopes, instruments designed for measuring the mechanical effect of radiant energy. Mounted in a partial vacuum, the central rotor spins when the vanes are exposed to light. Chemist William Crookes (1832 1919) initially believed the vanes with black surfaces were pushed around by pressure from light radiation. This was incorrect and other theories were put forward. It was not until 1879 that Osborne Reynolds suggested the correct