Credit: ©The Royal Society
    Image number: RS.15032

    Chart relating to centrobaric rule

    Date
    20 September 1673
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    LBC
    Manuscript page number
    vol6 p345
    Material
    Dimensions
    height (page): 303mm
    width (page): 178mm
    Subject
    Description
    Charts and diagrams in a letter from John Wallis, dated at Oxford, to Henry Oldenburg concerning the centrobaric rule of Paul Guldin (1577-1643) and Wallis's own method in his Arithmetica infinitorum (1655).

    Paul Guldin’s rule in Centrobaryca (1635-41) states that ‘If any plane figure revolve about an external axis in its plane, the volume of the solid so generated is equal to the product of the area of the figure and the distance travelled by the center of gravity of the figure’ (as explained in The Correspondence of Henry Oldenburg, vol. 10, p. 180n4).

    Copied from LBO/6/299. The original is at EL/W2/12/001.
    Related fellows
    John Wallis (1650, British) , Mathematician
    Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
    Associated place
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