Protection against direct lightning strikes has been a subject of controversy since the days of Benjamin Franklin. In 1752, Benjamin Franklin introduced a lightning strike collection system. Subsequently, it became known as the 'Franklin System', and the more contemporary name is the 'lightning conductor', air terminal or lightning rod.

The effectiveness of the Franklin System of stroke collection has been questioned for more than 100 years. Again, because there was no foundational physics, minimal test data or organised statistics presented to justify the manufacturer claims, they continued in use because of the lack of alternatives, other acceptable standards or political reasons.

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