Record

Reference numberMS/119/2/32
LevelItem
TitleLetter from Humphrey Lloyd, 7 Warwick Street, London to Charles James Buchanan Riddell
Date14 October 1842
DescriptionLloyd informs Riddell of his concerns regarding the portable magnetic instruments and insists that more modifications are needed. Lloyd discusses his opinions on the portable magnetic instrument and changes that could be adopted by Riddell. Discussion on Lamonts method, and Lloyd informs Riddell, that this method of observing the absolute intensity is preferable to their original plan. Lloyd recommends using the induction inclinometer for measuring absolute intensity, as well as the instruments for the changes of declination and horizontal force should be boxes of copper similar to the box of the inclinometer. Discussion on additional changes neccesary for experiments of vibration and for the absolute declination. Lloyd describe changes he has made to the box for horizontal force.
Extent4p
FormatManuscript
Physical descriptionInk on paper
Access statusOpen
Fellows associated with this archive
CodeNameDates
NA8252Lloyd; Humphrey (1800 - 1881)1800 - 1881
NA7327Riddell; Charles James Buchanan (1817 - 1903)1817 - 1903
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



    CONTACT US

    + 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

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

    Subscribe →

    © CalmView