Vacuum apparatus. Parts: a - Large tank of copper-sheet, b - dome, c - heating-coils, d - pipe into the condensor, e - pipe for inflow (cold water), f - pipe for outflow, g - pipe for filling tank, h - pipe for emptying tank, i - condensed output.
Unknown author<span style="display: none;">Unknown author</span>
circa 1885 <div style="display: none;">date QS:P,+1885-00-00T00:00:00Z/9,P1480,Q5727902</div>
<ul><li>24 August 2005 (original upload date)</li></ul>
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