There were generators long before Edison invented the light bulb. Volta invented the first battery in 1800, and Faraday invented the world's first electric motor in 1821, which was a breakthrough in the field of physics at that time. It was a major breakthrough, but its practical use was still very limited. It was not until 1831 that Faraday discovered electromagnetic induction, which was the greatest contribution of his life. In 1879, Edison invented the world's first incandescent light bulb. We cannot do without electrical appliances today, and everyone must be very interested in the "first" of various electrical appliances in the world, so let's start with the world's first electric fan.
1. The earliest electric fan
In 1882, the first commercial electric fan appeared in the United States. This household electrical appliance with only two blades was invented by Huey Skatz Hoyla, chief technician at the Krocakazis Engine Factory in New York. In 1883, the factory began mass production of this desktop electric fan. Twenty-five years later, the American Ecker Engine and Electrical Company developed the world's earliest gear-driven electric fan that oscillates left and right.
2. The earliest refrigerator
In 1913, Chicago, USA, successfully developed the world's earliest household refrigerator. This kind of refrigerator named "Dohailua" has a wooden shell with compression cooling equipment installed inside.
3. The earliest electric light
On July 25, 1835, Scottish scientist James Boman Lindsay succeeded in using electricity to continue lighting in the laboratory, becoming the world's first A person who makes practical use of electric light. Edison received the patent for the electric light on November 1, 1879. In 1880, Edison used carbonized paper as a filament to replace the short-lived carbonized kapok filament. Mass production began in October of the same year. This was the world's earliest commercial electric light. In July 1859, Professor Mozes G. Fama of the Newport Naval Training Institute in the United States installed the platinum lamp bulb he invented in the living room of his home in Salem, Massachusetts. This was the first bulb installed in the home. electric light.