Madberg Hemisphere Experiment Demonstrates The Existence of Atmospheric Pressure to Prove The Existence of Atmospheric Pressure Magdeburg Hemisphere

1. This instrument is used for high school science class to explain atmospheric pressure.2. This product consists of two cast iron hemispheres with pull rings. The two hemispheres are combined with each other to form a sealed container. One of the hemispheres has a gas guide valve. The air in the sealed hemisphere can be withdrawn through the valve.3. The pressure difference between the sealing ball and the outside compresses the two hemispheres, so that they cannot be separated within a certain pulling force.4. Paint spraying smooth and burr-free.5. Metal ball is inside coated with rust preventing paint.Spec:Item Type: Magdeburg HemispheresMaterial: Cast IronColor: BlackInstructions:Wipe the surfaces of the two hemispheres, apply them with grease such as , and rotate the two hemispheres relatively, then press firmly. Open the air guide valve, pump it with the pumping device, and after the gas is exhausted, close the valve. The instrument pull ring can hang a weight or pulled by the student, and the two hemispheres cannot be separated. Open the valve to make the air enters the ball. At this time, the air pressure is balanced inside and outside, and the two hemispheres are immediately separated.Maintenance & Repair:Do not hit or drop the instrument to prevent the hemisphere from being broken causing the is not good. Do not come into with corrosive objects and gases.Package List:1 x Magdeburg Hemispheres with Pull Ring

• This product is mainly used in junior high school physics to prove the existence of atmospheric pressure and demonstrate the famous Magdeburg hemisphere experiment.
• Two rubber hemispheres with pull-rings align with each other to form a closed container, and then press lightly. The pressure difference between the closed sphere and the outside atmospheric pressure will suck the two hemispherical balls tightly, so that they cannot be used in a certain tension ring. The two hemispheres are separated.
• Size: chassis diameter 117mm/4.6 in Material: rubber chassis + metal pull ring Weight: a pair of net weight is about 350g
• This product consists of two cast iron hemispheres with pull rings. The two hemispheres are combined with each other to form a sealed container. One of the hemispheres has a gas guide valve. The air in the sealed hemisphere can be withdrawn through the valve.
• The pressure difference between the sealing ball and the outside compresses the two hemispheres, so that they cannot be separated within a certain pulling force.