This made Edison's light bulb not only durable but also economical, and this was a crucial factor for mass usage. Thomas ...

Edison applied for a patent for the device in December ... selecting carbonized bamboo for his first commercial electric light bulb. Adapted for the internet from “Thomas Edison, Chemist” produced by ...

Everyone knew a better light bulb would be a winner ... Ultimately, they failed to commercialize it, but they sold their patent to Thomas Edison. Edison got serious about electric lighting ...