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: -In 1802, Humphry Davy invented the first electric light. He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing light.

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.