![]() Hydrogen went on to be the great lifting gas for Zeppelins and dirigibles generally. Only later did Charles find out that the Montgolfier balloon used hot air – he had invented the hydrogen balloon by mistake. It hit the ground again about 21km north of Paris, where it was destroyed by terrified peasants with pitchforks. But ultimately the balloon rose nobly into the air, and went northwards with the prevailing wind. It took days to fill the balloon and there were many leaks. To fill it with hydrogen Charles and his team added half a tonne of scrap iron to a quarter of a tonne of suitably-diluted sulfuric acid and piped the resulting reaction-heated hydrogen into the balloon with lead pipes. Their monster had a volume of about 35m 3. ![]() ![]() ![]() Charles and his co-workers constructed a hydrogen balloon of silk fabric, and to make it less permeable to gas they coated it with a solution of rubber in turpentine. ![]()
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