Educational Headlines - 20 Dec 2019 | S S V High School

• Until the 19th Century, all the houses and streets were dark and people used candles for lighting.
• It is a well known fact that electric Light Bulb is the greatest invention in the history of world.
• On this day, 20th December 1879, Thomas Alwa Edison demonstrated light bulb for the first time, which brought people out of darkness.