Vacuum Hood Suction Disc Bell in Vacuum Laboratory Jar Sound Physics for Sound Propagation Experiment and Low-Pressure Plastic Cover Boiling Test

The max height: 270mm The max diameter: 195mm Main material: glass and platics Notice: you need a vacuum pump to do the experiment 1. Sound propagation experiment The 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. 2. Low-pressure boiling test