22 out 1879 ano - First Practical
By the 19th Century, humans throughout history had been using fire as a light source, such as with torches, candles, and eventually gas lamps, all of which required a flame to operate. During the 1870s however, many inventors were working on creating an artificial light source using electricity.
Individuals such as Alexander Lodygin, Joseph Swan, and Thomas Edison all used the idea of heating up a small wire, known as a filament, housed inside a small glass bulb. The heat caused by the electricity would cause the filament to glow bright, thus providing a significant light source.
The early versions of this "light bulb" were impractical and did not last very long, but eventually after much research and experimenting with different materials, the first practical and successful light bulbs were patented, almost simultaneously, by Joseph Swan in the United Kingdom, and Thomas Edison, in the United States. Following this, a number of electric companies began to spring up in Europe and America, and over the next few decades provided electric light for many houses, boats, buildings, and streets across the Western world.
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