- Who
- Nikola Tesla
- What
- 40 metre(s)
- Where
- United States (Colorado)
- When
- 1899
Scientist and inventor Nikola Tesla (Croatia) created the longest manmade bolt of lightning – 40 m (130 ft) – in 1899, at his laboratory in Colorado, USA. The accompanying thunderclap was reported to have been heard 35 km (22 miles) away.