Credit: ©The Royal Society
    Image number: RS.14976

    Diagram regarding motion

    Date
    15 November 1670
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    LBC
    Manuscript page number
    vol4 p161
    Material
    Dimensions
    height (page): 301mm
    width (page): 178mm
    Subject
    Physics
       > Mechanics
    Description
    A figure relating to the controversy between Honorato Fabri and Gianbattista Borrelli as to whether two separate motions could be compounded into one. This was discussed by John Wallis in a letter to Henry Oldenburg dated 15 November 1670 (EL/W1/115), which was read to the Royal Society on 24 November 1670.

    This is a copy of LBO/4/117.
    Object history
    At the meeting of the Royal Society on 24 November 1670, ‘There was read a letter from Dr. Wallis to Mr. Oldenburg, dated at Oxford Nov. 15, 1670, concerning a controversy between Honorato Fabri and John Baptista Borelli; whether a stone thrown horizontally will in the same time come to the horizontal plane, as if without the motion of projection it had fallen directly down in the perpendicular. This Fabri denied, alledging an experiment of Mersennus to that purpose, and affirming the motion of descent in the curve to be by the obliquity of the motion hindered, as in sloping planes’ (Birch 2:454).
    Related fellows
    John Wallis (1650, British) , Mathematician
    Associated place
    <The World>
       > Europe
          > United Kingdom
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