jehl's

Updated: May 2, 2025

Jehl's notes of the reversion to carbon as a filament in the lamps, following an exhibition of metallic-filament lamps given in the spring of 1879 to the men in the syndicate advancing the funds for these experiments: "They came to Menlo Park on a late afternoon train from New York.

Frank Lewis Dyer - Edison, His Life and Inventions