Your Daily Facts about Lightbulbs
The first electric light was made in 1809 by Humphry Davy, an English scientist. He experimented with electricity and when he connected wires and a piece of carbon to a battery, the carbon glowed, producing light. In 1875 Herman Sprengel invented the mercury vacuum pump making it possible to develop a practical electric light bulb by making a really good vacuum inside the bulb possible. In 1878 Sir Joseph Wilson Swan, an English physicist, was the first person to invent a practical and
