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17th to 20th Century Technology and Culture--Teaching Aids (4/88)

4/88

Technology: Balloons--making hydrogen, 1790. Iron filings + dilute sulfuric acid are poured into the pails, down into casks. Pipes are of tin. Reference only.

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Filename: Balloons138.jpg
Copyright Friends of San Diego Architecture

Keywords:

Reference only, Technology, balloons, making hydrogen