Is 415.40 fortnights as long as The First light bulb test (Edison, 1879)?
It's about 9,500 times as long as The First light bulb test (Edison, 1879)
The length of The First light bulb test (Edison, 1879) is about 0.0432 fortnights.
(Thomas Edison's filament Thread No. 9) (1879) (total time)
Lit at 1:30am on October 22nd, 1879, the first Edison completed his first majorly successful test of his light bulb, which continued to burn for 0.0432 fortnights until the bulb glass succumbed to the heat and cracked, extinguishing the filament. Within 78.30 fortnights of his success, Edison was selling 45,000 light bulbs per day to large companies across the country.
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