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Frodsham shares experimental results and observations showing the advantages that may result from attaching a small brass tube to the top of the pendulum, which the author describes as 'an isochronal piece', so that its position and its influence on the action of the pendulum can be varied, and unequal arcs of vibration may be made to correspond to equal intervals of time. Marked on back as 'archives'.

Subject: Physics

Received 7 June 1838. Communicated by Captain [Francis] Beaufort.

Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 4 of Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society] as 'Experiments on the vibration of the pendulum'.

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William James Frodsham

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William James Frodsham, Unpublished paper, 'Experiments on the vibration of the pendulum' by W J [William James] Frodsham, 1838, AP/21/15, The Royal Society Archives, London,, accessed on 21 July 2024

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  • Archived Papers

    Dates: 1768-1989

    The 'Archived Papers' collection is comprised of original manuscript scientific papers and letters submitted to the Royal Society which remained unpublished or were abstracted in the journal 'Proceedings of the Royal Society' published from 1830 onwards.

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