Thomas Edison first publicly demonstrates his electric incandescent light bulb at his laboratory in Menlo Park, New Jersey. His bulb isn’t the first electric light, since arc lights are already in use for the illumination of large areas, such as department stores and streets. Edison isn’t even the first inventor to experiment with incandescent lamps, which use electricity to heat a filament to a high temperature. However, Edison’s lamp uses the first practical filament and is the first to feature a vacuum seal sufficient to remove the oxygen from the bulb’s interior.
The invention of the first battery to successfully convert radioactive energy to electrical energy is announced.
General Motors becomes the first corporation in the United States to earn over US$1 billion in a single year when it reports to its stockholders a listed net income of US$1,189,477,082 in revenues.
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