GENERAL KNOWLEDGE

Detailed explanation-1: -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-2: -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.

Detailed explanation-3: -The electrochemist Humphry Davy demonstrated lights of both kinds in the early 1800s. At the age of only twenty-two, Davy was made a lecturer at the new Royal Institution in London. He was a dazzling speaker whose lecture-demonstrations soon became major social events in London for both women and men.

Detailed explanation-4: -According to the Thomas Edison National Historical Park, “In 1879, he made an incandescent bulb that burned long enough to be practical, long enough to light a home for many hours.