Question

who was humphrey davey? Who firstly invented the light bulb ??

Answer 1

Invention of the Light Bulb: Davy, Swan and Edison - EnchantedLearning.com. The first electric light was made in 1800 by Humphry Davy, an English scientist. He experimented with electricity and invented an electric battery. 

Answer 2

Sir Humphrey Davy

• He was a famous British inventor and chemist.
• He invented the first electric light in 1809.
• He took two wires and connected them to a battery. Then he attached a charcoal strip between the other ends of the wire and the charged carbon started glowing.
• This was the first arc lamp.
• He also invented the miner's safety lamp in 1815.

Light Bulb

The electric light bulb is a glass bulb fitted with a wire filament, which glows when heated by electricity. Thomas Alva Edison invented the first practical electric bulb in 1879.

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Additional Information

• The light bulb has a simple structure.
• The light bulb consists of a glass bulb with a metal filament, usually tungsten.
• The glass bulb contains a noble gas, which prevents the metal filament inside the bulb from evaporating.
• The bulb emits light when electric current heats the filament due to incandescence. Therefore, it is often called an incandescent bulb.