Instrument to measure water pressure
                                Date
                            
                            
                                14 January 1663
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Unknown, Artist
                            
                            
                        
                            
                            
                            
                                After
                            
                            
                                Robert Hooke (1635 - 1703, British) , Natural philosopher
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p89
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 357mm
width (page): 225mm
                            
                        
                            
                            
                            width (page): 225mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Content object
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Figures showing an experimental apparatus designed by Hooke to test water pressure after heavier or lighter objects have been submerged. Hooke's experiment was read to the meeting of the Royal Society on 14 January 1663.
Hooke's original drawings are at Cl.P/20/9.
                            
                            
                        
                            
                            
                            Hooke's original drawings are at Cl.P/20/9.
                                Object history
                            
                            
                                At the meeting of the Royal Society on 14 January 1663, ‘Mr. Hooke’s two papers were read, the one containing an account of some trials for finding how much the pressure of the water is increased by the descent of heavier, or the ascent of lighter bodies therein; the other, containing an experiment concerning the different weight of cold and warm water: both which papers were ordered to be registered’ (Birch 1:174). The text is reproduced in Birch 1:174-76.
                            
                            
                        
                            
                            
                            
                                Related fellows
                            
                            
                                Robert Hooke (1635 - 1703, British) , Natural philosopher
                            
                            
                        
                            
                            
                            
                                Associated place