five-hours

Updated: May 27, 2025

Edison informed me that as a marine engine started before the ship left New York and continued running until it reached its home port, so an engine for his purposes must produce light at all times. That was a poser to me, for a five-hours' run was about all that had been required up to that time. "A day or two later Mr.

Frank Lewis Dyer - Edison, His Life and Inventions