He couldn’t find any from the 18 th century (although there are pictures of other similar experiments), but there were several from the 19 th century. As Franklin watched the electrical sparks emerge from the key, he realized that they bore a striking resemblance to those produced when rubbing two pieces of. Moura went looking for widely-used illustrations of Franklin’s kite experiment. But some historians doubt that this famous experiment really happened. When Franklin touched the iron key attached to the kite’s string, he saw sparks fly between his knuckle and the metal key. Hine’s engraving published in John Henry Pepper’s 1860 book ‘The Boy’s Playbook of Science’. 23 In June of 1752, Ben Franklin sought to prove that lightning was electrical by flying a kite in stormy weather. That’s how it was recorded as done – but how has it been illustrated? Drawing flaws into the kite experiment Another of Moura’s studies: Henry G. This wasn’t actually the aim of the experiment – the sparks should have been possible without a lightning strike. It also ambiguously implies that lightning struck the kite, saying “ lightning descended by the hempen string”. Priestley’s version is more detailed, and emphasises different things: it downplays the fact that the person must be indoors, and includes Franklin’s son in the story – presumably William Franklin, since his other son Francis died in 1736. The person holding the kite should be protected from the charge, but will be able to get a small spark to leap from the key when they hold their finger near it. ![]() When a storm approaches, the kite is electrified by just the presence of the clouds, and falling rain makes the kite’s twine wet so that it conducts electricity. Alfred Jones’ vignette, produced for the American Bank Note Company, and one of the several images Moura studied – there are a few inaccuracies in it.
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