the light bulb
who invented the light bulb?
Thomas Alva Edison invented the first commercial light bulb in 1879.
how did he come up with the light bulb idea?
Three factors in combination are generally recognized as contributing to Edison’s success:
- A durable incandescent material
- Elimination of air from the bulb-a better vacuum
- A filament material of high resistance
how was it made?
He used a strong bond of filament and a small piece of aluminum in the center and when connected to a energy current it would turn on.