, United States (USA) (American Colonies) - 1879 - Incandescent light bulb is invented (Thomas Alva Edison, United States)
Edison still claims that his electric light is a complete success, and says he can now furnish it at one-third the cost of gas, but he thinks that he can make the difference in price much greater, and hence the delay. In San Francisco, a company has been formed and is now ready to furnish light in any part of the city, while the directors claim they can light all the streets of the city at a saving of from $150,000 to $200,000 a year to taxpayers. The public has heard enough about what Edison and others promise to do in the way of cheap light, and is now anxiously waiting for the performance.
April 18, 1879
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