Feature

●The max height: 270mm
●The max diameter: 195mm
●Main material: glass and plastic
●Notice: you need a vacuum pump to do the experiment


Description

Glass Vacuum Bell Jar with Base Vacuum HoodGlass Vacuum Bell Jar with Base Vacuum Hood
Glass Vacuum Bell Jar with Base for Sound Propagation Experiment Glass Cover Boiling TestGlass Vacuum Bell Jar with Base for Sound Propagation Experiment Glass Cover Boiling Test

Glass Vacuum Bell Jar with BaseGlass Vacuum Bell Jar with Base

Glass Vacuum Bell Jar with BaseGlass Vacuum Bell Jar with Base

Glass Vacuum Bell Jar with BaseGlass Vacuum Bell Jar with Base

Vacuum experiment

Before the experiment, the valve cone around the rubber sealing ring should be coated with a layer of Vaseline (self provided), and the valve nut should be tightened.

Sound propagation experiment

Install the battery of the electric bell (provided by yourself), turn on the switch, the electric bell rings, and then put the bell cover on the base, and the clear electric bell can still be heard through the bell jar. Connect the air extraction device (provided by yourself) to extract the air inside, the electric bell will gradually weaken until no sound is heard,close the valve on the base and let the students observe that although the hammer of the electric bell is still beating the bell, no sound can be heard.

Low pressure boiling experiment

Put a cup of hot water that has ceased to boil into the bell jar, and draw air, then you can see that the hot water will boil.

Glass Vacuum Bell JarGlass Vacuum Bell Jar

Whats in the box

  • glass gar, bell, base,rubber ring