Thomas Edison publicly demonstrates first practical electric light bulb 140 years ago #OnThisDay #OTD (Dec 31 1879)


Video: 'Documentary | Thomas Edison - The Wizard of Menlo Park' (Dec. 31, 1879, at 45:52)

(New Year’s Eve, Wednesday, December 31, 1879, evening local time) — Thomas Edison first publicly demonstrated his electric incandescent light tonight by illuminating some 40 bulbs at his laboratory in Menlo Park, New Jersey.