Magdeburg Hemispheres – Spheres
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Product Number: SB28572M Price: $31.50 |
PRODUCT DETAILS
Astonish your students with the force of air pressure. It takes 350 lbs. of force to pull these half-spheres apart after the air inside has been pumped out. Kit consists of two plastic hemispheres (each 6-1/2" in diameter) with O-ring seal, plastic valve (fits 1/4" diameter pressure tubing), attached handles, and instructions. Operation requires a vacuum pump (not included). Grade 6 and up.
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