Just one piece from the Great Minds puzzle range! Will you be able to master this challenging metal brainteaser?

Aim: Can you separate the two keys… and then reattach them?

Benjamin Franklin (1706-1790)

Among many other things he was the first to demonstrate that lightning comprises electrical charges. In 1752 Franklin supposedly ventured into a storm to fly a kite. He was holding a silk ribbon with a kite at one end and an iron key at the other. Lightning struck the kite and a charge travelled down the silk ribbon to the metal key. Franklin touched the key and was ‘zapped’, thus proving the electrical nature of lightning!