An otheoscope Product:Framed picture 1801) Inscribed below the image:

1801) Inscribed below the image: 'W

keep a bath topped up with hot water and scrub down the gentlemen sitting in the tub

The Chinese Building and Rotunda in Ranelagh Gardens

Figure 1 'The Bull-Beetle

driven by Henry Segrave

An otheoscope Product:Framed picture 1801) Inscribed below the image:An otheoscope with fixed vanes of oxidised copper and coloured disc above it. An instrument designed for measuring the mechanical effect of radiant energy, a modification of the radiometer. 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