Paper, 'On the conservation of solar energy' by C W [Charles William] Siemens

Description

Siemens writes: 'The question of the maintenance of Solar Energy is one that has been looked upon with deep interest by astronomers and physicists from the time of La Place downward. The amount of heat radiated from the Sun has been approximately computed, by the aid of the pyrheliometer of Pouillet and by the actinometers of Herschel and others, at 18,000,000 of heat units from every square foot of his surface per hour, or, put popularly, as equal to the heat that would be produced by the perfect combustion every thirtysix hours of a mass of coal of specific gravity = 1·5 as great as that of our Earth.'

Annotations in pencil and ink.

Subject: Physics

Received 20 February 1881 [1882]. Read 2 March 1882.

A version of this paper was published in volume 33 of the Proceedings of the Royal Society as 'On the conservation of solar energy'.

Reference number

PP/1/31

Earliest possible date

1881

Physical description

Ink and graphite pencil on paper

Page extent

16 pages

Format

Manuscript