Statements (19)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | 
                                    
                                        
                                            gptkb:scientific_instrument
                                        
                                         | 
                            
| gptkbp:consistsOf | 
                                    
                                        
                                            
                                            two hemispherical shells
                                        
                                        
                                         | 
                            
| gptkbp:demonstrationAudience | 
                                    
                                        
                                            
                                            public
                                        
                                        
                                         Holy Roman Emperor Ferdinand III  | 
                            
| gptkbp:demonstrationInvolved | 
                                    
                                        
                                            
                                            teams of horses
                                        
                                        
                                         | 
                            
| gptkbp:demonstrationShowed | 
                                    
                                        
                                            
                                            force of air pressure
                                        
                                        
                                         | 
                            
| gptkbp:firstDemonstrated | 
                                    
                                        
                                            gptkb:Magdeburg,_Germany
                                        
                                         | 
                            
| gptkbp:function | 
                                    
                                        
                                            
                                            create a vacuum when sealed together and air is pumped out
                                        
                                        
                                         | 
                            
| gptkbp:inventedBy | 
                                    
                                        
                                            gptkb:Otto_von_Guericke
                                        
                                         1654  | 
                            
| gptkbp:material | 
                                    
                                        
                                            gptkb:metal
                                        
                                         | 
                            
| gptkbp:notableDemonstrationYear | 
                                    
                                        
                                            
                                            1657
                                        
                                        
                                         1654  | 
                            
| gptkbp:relatedTo | 
                                    
                                        
                                            gptkb:vacuum
                                        
                                         air pump  | 
                            
| gptkbp:usedFor | 
                                    
                                        
                                            
                                            demonstrating atmospheric pressure
                                        
                                        
                                         | 
                            
| gptkbp:bfsParent | 
                                    
                                        
                                            gptkb:Otto_von_Guericke
                                        
                                         | 
                            
| gptkbp:bfsLayer | 
                                    
                                        
                                            
                                            6
                                        
                                        
                                         | 
                            
| https://www.w3.org/2000/01/rdf-schema#label | 
                                    
                                        
                                            
                                            Magdeburg hemispheres
                                        
                                        
                                         |