Reference numberPP/10/15
Previous numbersPP/42/15
TitlePaper, 'A thermal telephone transmitter' by George Forbes
DescriptionForbes writes: 'We have had so much evidence of the sensitiveness of the Bell telephone receiver to the minutest changes of current, that we have ceased to be surprised at any transmitter which responds to the sounds of articulate speech. But, in the instrument now shown, it was so extremely unlikely that sensible variations of current could be produced with sufficient rapidity, that even now there is perhaps some interest attached to the experiment. A wooden cylinder was used closed at one end.'

Annotations in pencil and ink.

Subject: Engineering

Received 12 February 1887. Read 24 February 1887. Communicated by Lord Rayleigh [John William Strutt].

A version of this paper was published in volume 42 of the Proceedings of the Royal Society as 'A thermal telephone transmitter'.
Physical descriptionInk and graphite pencil on paper
Digital imagesView item on Science in the Making
Access statusOpen
Related materialDOI: 10.1098/rspl.1887.0026
Fellows associated with this archive
NA7125Forbes; George (1849 - 1936); engineer1849 - 1936
NA6090Strutt; John William (1842 - 1919); 3rd Baron Rayleigh1842 - 1919
Add to My Items

    Collection highlights

    Browse the records of some of our collections, which cover all branches of science and date from the 12th century onwards. These include the published works of Fellows of the Royal Society, personal papers of eminent scientists, letters and manuscripts sent to the Society or presented at meetings, and administrative records documenting the Society's activities since our foundation in 1660.

    The Royal Society

    The Royal Society is a Fellowship of many of
    the world's most eminent scientists and is the
    oldest scientific academy in continuous existence.
    Registered charity number 207043

    Website design ©CalmView


    + 44 207 451 2500
    (Lines open Mon-Fri, 9:00-17:00. Excludes bank holidays)

    6-9 Carlton House Terrace, London SW1Y 5AG

    Email Us →


    Subscribe to our newsletters to be updated with the
    latest news on innovation, events, articles and reports.

    Subscribe →

    © CalmView