Benjamin Franklin and his son,William,test Franklin's hypothesis on lighting and electricity. They did this attaching William's kite to a silk string, tying an iron key on the other end.Next they tied a thin metal wire from the key and put the wire into a Leyden Jar, which was a container used for storing an electrical charge.When they saw a storm approaching, they attached a silk ribbon to the key. Holding onto to the kite by the silk ribbon Benjamin Franklin flew the kite and once it was in the air he went into a barn so he would not get wet.When the thunderstorm cloud passed over Franklin's kite, the negative charges from the cloud were passed onto his kite, down the wet silk string, to the key and into the jar.Franklin though was unaffected