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How a Light Bulb Works
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If Davy invented the light bulb, what did Edison invent?
Fun Facts
Edison made a improved version of Davy's light bulb. He tested over 3,000 light bulbs and finally succeeded.
- Light bulbs more accurate name would be "heat bulbs"
- There are many types of light bulbs (Neon, Fluorescent, etc...)
- The first electric light bulb was first invented in 1802 by Humphrey Davy.
Parts of a Light Bulb
How a Light Bulb Works
There are many parts of a light bulb. Here is a list.
- Filament
- Support wires
- Glass support
- Wire attachment
- Ceramic insulator
- Metal Tip
A light bulb works by sending electrical current to the filament (usually tungsten) of the bulb. The thin layer of glass is used to keep oxygen out because if oxygen make contact the tungsten will simply disintegrate. To prevent this the use the glass but this only slow it down. They fill the bulb with halogen air which traps the parts of the filament that start to fly away and then the halogen air puts it back on the filament.