Reference numberMS/525/6/6/2/12
TitleLetter from Dugald Clerk to Professor Joseph Ernest Petavel, Physical Laboratory, The University, Manchester
Date23 February 1915
DescriptionGiving thanks for Petavel's ingenious proposal [Artful Dodger mine] which Clerk thinks should be successful, with modifications. Clerk suggests using hydrogen or coal gas to regulate buoyancy. The key is to obtain an effective clock. Sir Henry Jackson is communicating with Trinity House on the subject. Petavel should make a full sized tube of the type required by the mine and use it in pool experiments.
FormatCarbon copy
Access statusOpen
Fellows associated with this archive
NA7825Clerk; Sir; Dugald (1854 - 1932); mechanical engineer1854 - 1932
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