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: -With more than a thousand patents to his name, the legendary inventor’s innovations helped define the modern world. Thomas Edison had a hand in inventing revolutionary devices such as the movie camera, microphone, and phonograph.

Detailed explanation-3: -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.

Detailed explanation-4: -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.