Credit: ©The Royal Society
    Image number: RS.16484

    Instrument to measure the refractive power of air

    Date
    1699
    Creator
    Henry Hunt (British) , Artist
    Object type
    Archive reference number
    Manuscript page number
    p162
    Material
    Dimensions
    height (paper): 190mm
    width (paper): 380mm
    Subject
    Content object
    Description
    A drawing by Henry Hunt of an instrument used by John Lowthorp to experiment on the refraction of the air, which was submitted to the meeting of the Royal Society on 1 November 1699. It was printed in Philosophical Transactions of the Royal Society, vol. 21 (1699).
    Transcription
    signed Hhunt. At the bottom: Memorandum/to express the threads in the focus at p/to raise the cylinder upon the upright plate/to take Mr Halleys Numbers of the Refraction of water
    Transcribed by the Making Visible project
    Object history
    1 November 1699, 'A letter was read from Mr Lowthorp, with an enclosed paper, concerning the experiments about Refraction. It was ordered to be printed in the Transactions; and he was thanked' (JBO/10/147).

    Printed in J. Lowthorp, ‘An experiment of the refraction of the air made at the command of the Royal Society, March 28, 1699’, Phil. Trans., vol. 21, no. 257 (October 1699), pp. 339-42.
    Related fellows
    John Lowthorp (1654 - 1724, British English) , Clergyman
    Associated place
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          > United Kingdom
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