USA HISTORY

Detailed explanation-1: -By January 1879, at his laboratory in Menlo Park, New Jersey, Edison had built his first high resistance, incandescent electric light. It worked by passing electricity through a thin platinum filament in the glass vacuum bulb, which delayed the filament from melting. Still, the lamp only burned for a few short hours.

Detailed explanation-2: -Thomas Edison and the “first” light bulb In 1878, Thomas Edison began serious research into developing a practical incandescent lamp and on October 14, 1878, Edison filed his first patent application for “Improvement In Electric Lights".

Detailed explanation-3: -On January 27, 1880, Thomas Edison received the historic patent embodying the principles of his incandescent lamp that paved the way for the universal domestic use of electric light.

Detailed explanation-4: -Edison Light Bulb, 1879 Thomas Edison used this carbon-filament bulb in the first public demonstration of his most famous invention-the light bulb, the first practical electric incandescent lamp.