Benjamin Franklin did not discover electricity but is famous for his experiment in 1752 when with a kite, a key, and a storm he proved that lightning and electrical sparks were the same thing. Franklin witnessed a spark jump from the key on the kite string to his wrist shortly after lightning struck his kite.
The cache you seek that’s close to hear,
Attracting any buccaneer.
You need no keys to open locks,
So search around about Fort Knox.