The Radiometer by John Browning is a book published in 1876 that describes an instrument that revolves continuously under the influence of radiation. The instrument, also known as a Crookes radiometer, is a device that consists of a glass bulb containing a partial vacuum and a set of vanes that are mounted on a spindle. When exposed to light or other forms of radiation, the vanes rotate due to the thermal effects of the radiation. The book provides...