On this day in science history: 15 June

From the days of ancient technology to modern science - find out what happened on this day in the history of science.

15th June 2017
Benjamin Franklin proves lightning is electricity © Hulton Archive/Getty Images

© Hulton Archive/Getty Images

1752 - Benjamin Franklin proves lightning is electricity

During a midsummer storm, Benjamin Franklin and his son fly a kite with an iron key attached to a silk string connected to a Leyden jar to record any electricity generated at the other end. As the thunderstorm passes over Franklin’s kite, negative charges in the clouds pass along the string, to the key and into the jar.

1785 - First-ever casualties of an air crash

First-ever casualties of an air crash © Keystone-France/Gamma-Rapho via Getty Images
© Keystone-France/Gamma-Rapho via Getty Images

Jean-François Pilâtre de Rozier and his co-pilot, Pierre Romain, become the first-ever casualties of an air crash when their hot air balloon explodes during an attempt to cross the English Channel.

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