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Vacuum / Negative Pressure |
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| Metal Magdeburg
Hemispheres |
Miniature
Magdeburg Hemispheres |
Metal Magdeburg Hemispheres
These heavy duty Magdeburg hemispheres are made of cast iron and can
withstand high pressures. Brass valve and precision matching of the
two spheres prevent leakage. 8.5" x 4" x 4"
No. SF224-MA. Only $44.95
Miniature Magdeburg Hemispheres
This is an economical substitute for a classic piece of physics equipment.
Made of two rubber cubs with chrome plated steel handles. Placing
the cups together and squeeze out the air. You will find it
difficult to pull the two cups apart. You can hang up to 28 pounds
on the handle to show the force of air pressure. No vacuum pump
needed. Suction cup diameter is 2.15"
No. SF224-MB Only $9.75 |
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Guinea Feather Apparatus
Use to demonstrate that heavy and light objects fall at same rate
in a vacuum. Made of a transparent tube 100cm x 37mm with rubber
end caps, one of which has a nozzle stopcock for connecting to a
vacuum pump (not included). Provided with a simulated coin a
feather.
No. SF224-GA. Only $34.95 |
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