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The lightbulb has been improved and changed a lot since it was invented. In 1881, Lewis Howard Latimer invented a carbon filament to improve the bulb. In 1903, Willis R. Whitney invented a treatment for the bulbs' filament so that the inside of the bulbs wouldn't get darker as they burned. In 1991, Phillips invented a lightbulb that used magnetic induction, and could last 60 thousand hours. Lightbulbs continue to change and advance.
The lightbulb has been improved and changed a lot since it was invented. In 1881, Lewis Howard Latimer invented a carbon filament to improve the bulb. In 1903, Willis R. Whitney invented a treatment for the bulbs' filament so that the inside of the bulbs wouldn't get darker as they burned. In 1991, Phillips invented a lightbulb that used magnetic induction, and could last 60 thousand hours. Lightbulbs continue to change and advance.