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1. At the beginning of the 19th century, people began to use gas lamps (gas lamps), but the gas was supplied by pipes. Once the gas leaked or blocked, it was very easy to cause accidents. People were very enthusiastic about the reform of lighting. In fact, Edison set an impossible task for himself: in addition to improving lighting, he also had to create a set of power supply system
so he and his friends in Monroe garden did more than 1600 experiments on heat-resistant materials and more than 600 kinds of plant fibers, and then they made the first carbon filament bulb, which could burn for 45 hours at a time. Later, he continuously improved the manufacturing method on this basis, and finally introced a bamboo filament light bulb that can be ignited for 1200 hours
At the end of 1868, Edison came to Boston as a telegraph operator. In the same year, he obtained the first patent right for his invention, which is a device for automatically recording votes, also known as "vote counter". Edison believed that this device would speed up the work of Congress and be popular, But a congressman told him that sometimes voting slowly was also out of political need, so Edison decided never to create inventions that people didn't need Edison is the first person in the history of mankind to use the principle of mass proction and electrical engineering research laboratory to engage in invention patents, which has a profound impact on the world. His invention of gramophone, film camera and electric lamp had a great influence on the world. He has more than 2000 inventions and more than 1000 patents in his life In 1857, Edison began to take an interest in chemistry. He did experiments in his cellar according to the textbooks, and often had accidents In 1859, in order to have enough money to buy chemical drugs and experimental equipment, Edison began to look for a job to make money. After some efforts, he found a job selling newspapers on the train. Every day, he traveled between Port Huron and Detroit. He sold newspapers while carrying fruit and vegetable business, but whenever he was free, he would go to the library to read books In 1861, Edison bought an old printing press with the money he earned from selling newspapers and began to publish his weekly Herald. The first issue was printed on the train. He was not only the president, journalist, publisher, but also a printer and newsboy. There was a rest room on the train where Edison worked. Because of the lack of air circulation, no one went there to have a restbecause Edison was running on the train every day and came home late every day, he often felt that he did not have enough time. Edison thought that if he changed the rest room into a laboratory, he could do the experiment on the way back to Port Huron. With the consent of the conctor, the unmanned rest room would become Edison's laboratory
although it is convenient to do experiments, accidents often happen. Once, the chemicals in his laboratory suddenly caught fire, causing losses, and the conctor threw his experimental equipment out of the car in a rage