Diagram
                                Date
                            
                            
                                8 June 1675
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p241
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 313mm
width (page): 195mm
                            
                        
                            
                            
                            width (page): 195mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Diagram relating to James Gregorie's observation on Robert Hooke's Attempt to prove the motion of the Earth from observations (1674) in a letter to Henry Oldenburg dated 8 June 1675, Edinburgh. The letter was read to the Royal Society on 24 June 1675.
A copy can be found at LBC/7/360.
                            
                            
                        
                            
                            
                            A copy can be found at LBC/7/360.
                                Object history
                            
                            
                                At the meeting of the Royal Society on 24 June 1675, ‘Mr. Oldenburg communicated a letter to himself from Mr. Gregory, dated at Edinburg, 8th June, 1675, describing a way of his to prove the motion of the earth, different from that of Mr. Hooke published some time before; as also assigning the limits of a biquadratic aequation by the roots of a quadratic aequation’ (Birch 3:225). The text and figures are produced in Birch 3:225-26.
                            
                            
                        
                            
                            
                            
                                Related fellows
                            
                            
                                James Gregorie (1638 - 1675, Scottish) , Mathematician
Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
Robert Hooke (1635 - 1703, British) , Natural philosopher
                            
                        
                            
                            
                            Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
Robert Hooke (1635 - 1703, British) , Natural philosopher
                                Associated place