Diagram relating to Alhazen's problem
                                Date
                            
                            
                                31 August 1672
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p337
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 313mm
width (page): 197mm
                            
                        
                            
                            
                            width (page): 197mm
                                Description
                            
                            
                                The debate between Huygens and Slusius about the solution to the problem of finding a point of reflection on the surface of a spherical mirror in relation to two points, the eye and the visible object, attributed to Alhazen (Ibn al-Haytham (965-1045)) had been discussed at the meetings of the Royal Society on 3 July 1672 and 18 December 1672.
This diagram is from Slusius's discussion of Alhazen's problem in a letter to Oldenburg, which was printed in Philosophical Transactions of the Royal Society, vol. 8, no. 98 (November 1673), pp. 6145-46.
The diagram in the letter is at EL/S1/72/001. There is another copy at LBC/5/369.
                            
                            
                        
                            
                            
                            This diagram is from Slusius's discussion of Alhazen's problem in a letter to Oldenburg, which was printed in Philosophical Transactions of the Royal Society, vol. 8, no. 98 (November 1673), pp. 6145-46.
The diagram in the letter is at EL/S1/72/001. There is another copy at LBC/5/369.
                                Transcription
                            
                            
                                Prid. Kal. Septemb.
Transcribed by the Making Visible project
                            
                        
                            
                            
                            Transcribed by the Making Visible project
                                Object history
                            
                            
                                R. F. Slusius and C. Huygens, 'Continuation of the optical problem of Alhazen,' Phil. Trans. vol. 8, no. 98 (November 1673), pp. 6145-46.
                            
                            
                        
                            
                            
                            
                                Related fellows
                            
                            
                                Renatus Franciscus Slusius (1622 - 1685, Belgian) , Mathematician
Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
                            
                        
                            
                            
                        
                            
                            
                        
                    Henry Oldenburg (1612 - 1677, German) , Scientific correspondent