Experimental apparatus
                                Date
                            
                            
                                3 June 1663
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Unknown, Artist
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p1
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 307mm
width (page): 193mm
                            
                        
                            
                            
                            width (page): 193mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Diagram showing experimental apparatus of a bolt-head filled with water and inverted into a small glass vessel containing enough water to cover the bottom of the stem, illustrating a paper entitled 'Of exhausting Air out of water, wch returneth into ye water againe, by Mr Hook. June 3 1663'.
This was used by Robert Hooke in an experiment using an air pump. The bubbles created by the compression were deemed to be 'rarefied water', as they disappeared two to three days after the experiment. The experiment tried at the meeting of the Royal Society on 3 June 1663 did not succeed because of leaks from the condensing machine. It was demonstrated more successfully on 10 June 1663.
Copies of this image can be found in RBO/2ii/149, RBO/2i/227, RBC/2/034 and MS/215/098.
                            
                            
                        
                            
                            
                            This was used by Robert Hooke in an experiment using an air pump. The bubbles created by the compression were deemed to be 'rarefied water', as they disappeared two to three days after the experiment. The experiment tried at the meeting of the Royal Society on 3 June 1663 did not succeed because of leaks from the condensing machine. It was demonstrated more successfully on 10 June 1663.
Copies of this image can be found in RBO/2ii/149, RBO/2i/227, RBC/2/034 and MS/215/098.
                                Transcription
                            
                            
                                'There was taken a bolt-head holding about 4 ounces of water this was filld topfull with water and the mouth of the small long stem was inverted into a small glass vessell containing water enough to cover about an inch of the stem. Then both of them in the posture here exprest in the figure were shut up into a small long Receiver'
Transcribed by the Making Visible project
                            
                        
                            
                            
                            Transcribed by the Making Visible project
                                Object history
                            
                            
                                At the meeting of the Royal Society on 3 June 1663, ‘the experiment of raising water in a kind of small weather-glass, by the pressing in of air in the condensing engine, was tried; but by reason of the engine’s leaking, proved imperfect, and was therefore ordered to be repeated at the next meeting’ (Birch 1:250).  
At the next meeting, on 10 June 1663, ‘the experiment was begun to be made, to know, whether the substance of those bubbles, that are observed to float at the top of the water in two bolt-heads, after the water hath been well exhausted out of the receiver, and been re-admitted into the same, be real air, or but rarefied parts of that water. And there was put into the place of the bubble remaining in one of the bolt-heads, included in the same receiver, as much air, to see at the next meeting, whether the one as well as the other return into the pores of the water or not’ (Birch 1:254). The text and figure of this experiment are printed in Birch 1:254-55.
                            
                        
                            
                            
                            At the next meeting, on 10 June 1663, ‘the experiment was begun to be made, to know, whether the substance of those bubbles, that are observed to float at the top of the water in two bolt-heads, after the water hath been well exhausted out of the receiver, and been re-admitted into the same, be real air, or but rarefied parts of that water. And there was put into the place of the bubble remaining in one of the bolt-heads, included in the same receiver, as much air, to see at the next meeting, whether the one as well as the other return into the pores of the water or not’ (Birch 1:254). The text and figure of this experiment are printed in Birch 1:254-55.
                                Related fellows
                            
                            
                                Robert Hooke (1635 - 1703, British) , Natural philosopher
                            
                            
                        
                            
                            
                            
                                Associated place