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Product Information Demonstrate that objects in a vacuum fall at the same speed regardless of weight. The apparatus also may be used for showing the fountain in a vacuum, and for the study of electric discharge through rarified gas. The acrylic tube measures 65 cm long x 38 mm in diameter, and is mounted on a tripod base. It is supplied with a valve at the bottom for evacuating the tube and an electrode at the top of the tube. A brass disc and a feather are included.  Tell a Friend about this item
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