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| Magdeburg Hemisphere Economical mounted on cast metal base with ball valve stopcock of hexagonal cross-section and plastic knob for opening and closing. Each brass cup is of about 75mm diameter
(0079) |
| For demonstrating the huge forces that atmospheric pressure is capable of exerting. The apparatus comprises two plated hemispherical cups, with carefully ground joint flanges for precise matching. One of the cup mounted on stand and has a ball valve stopcock underneath that has and riffled connector for connection to vacuum pump and for releasing vacuum. The upper cup has a removable ring-shaped t:landle at its top for pulling both the cups apart under evacuated condition |
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