Sound Propagation ExperimentThe Bell On The Bell With A Bell Above The Sound Of The Bell,Bells Can Still Hear A Clear Electric Bell,And Then Extract The Air Bell,Electric Bells Will Gradually Weaken Until The Sound Can Not Hear,Close The Exhaust Valve,So That Students Observe,Bell Bell Hammer Is Still Kept Ringing Bell,But Can Not Hear The Sound
Low-Pressure Boiling TestA Cup Of Hot Water Has Discharged Boiling Into The Bell Jar,And Then Pumping,You Can See The Cup Of Hot Water And Boiling Up
The Instrument Can Also Be UsedVacuum Fountain,Evaporation Icing,Vacuum Coating,Atmospheric Pressure And Other Experiments
NoteYou Need A Vacuum Pump To Do The Experiment
MaterialGlass+Plastics