Edison's Phonograph (1877): The First Machine to Play Back Sound
Edison demonstrated the first machine able to record sound and reproduce it, patented in February 1878, which founded the recorded-sound industry.
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Edison demonstrated the first machine able to record sound and reproduce it, patented in February 1878, which founded the recorded-sound industry.
The two men named well over a hundred new species of dinosaurs between them, including Stegosaurus, Triceratops and Diplodocus, but the feud damaged both their reputations and finances.
Chile defeated Peru and Bolivia, annexing the nitrate provinces of Tarapacá and Antofagasta; Bolivia lost its entire Pacific coastline.
Edison's team produced a practical high-resistance carbon-filament lamp and built an electric lighting system around it, while Joseph Swan developed a rival lamp in Britain.
The French canal company went bankrupt in 1889 after the deaths of an estimated 20,000 or more workers, and the resulting Panama scandal discredited many French politicians.
The station supplied direct-current electricity to paying customers in Lower Manhattan, proving the central-station model on which the electric utility industry was built.
The bridge opened as the longest suspension bridge in the world and the first to use steel wire for its cables, linking New York and Brooklyn.
The Canadian Pacific Railway main line was completed, linking eastern Canada with British Columbia and fulfilling the promise that had brought the province into Confederation.
Alternating current became the standard for generating and distributing electric power, while Edison's direct-current system was gradually confined to special uses.
Severe damage to most buildings in Charleston, about 60 deaths, and a landmark scientific study of an eastern US earthquake.
The experiment found no measurable motion of the Earth through the supposed luminiferous ether, a null result that later supported Einstein's special theory of relativity.
Slavery was abolished immediately and without compensation, freeing around 700,000 people; the monarchy lost planter support and fell in November 1889.