Credit: ©The Royal Society
    Image number: RS.15279

    Experimental apparatus

    Date
    1 July 1663
    Creator
    Robert Hooke (1635 - 1703, British) , Natural philosopher
    Object type
    Archive reference number
    Manuscript page number
    p1
    Material
    Dimensions
    height (page): 311mm
    width (page): 198mm
    Subject
    Description
    Experimental apparatus illustrating a paper entitled 'An Experiment try'd touching the uniting and mixing of air and water. by Mr Hook'.

    The drawing is of a glass instrument with a bolt head, placed in a small glass vessel. Hooke used this instrument with an air pump for a series of experiments in July 1663, including a variation of the Torricellian experiment using water and the experiment on the 'uniting and mixing of air and water'.

    Copies of this image can be found in RBO/2i/244, RBO/2ii/161, RBC/2/046, MS/215/098 and MS/776/433.
    Transcription
    'A bolt head, of the shap of A containing about 6 or seven ounces of water with a neck about 6 inches long was filld top full with water and the mouth of it inverted into a small glass body of water as B, and soe convey'd into the Receiver of the evacuating engine'
    Transcribed by the Making Visible project
    Object history
    This is a similar experiment to that depicted in Cl.P/20/19/001.

    At the meeting of the Royal Society on 1 July 1663, ‘Mr. Hooke’s experiment for finding, whether the bubbles, that rise out of the water upon the emptying a receiver of the air, are real air, or only rarefied parts of water, was ordered to be repeated at the next meeting’ (Birch 1:268).

    16 July 1663, ‘Mr. Hooke brought in an account in writing of two experiments tried by the society, one concerning the uniting and mixing of air and water; the other concerning the suspension of defecated water in a bolt head after the receiver had been well exhausted. This account was ordered to be registered’ (Birch 1:274-75). Figure and text printed in Birch 1:275.
    Related fellows
    Robert Hooke (1635 - 1703, British) , Natural philosopher
    Associated place
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