Главная Случайная страница


Полезное:

Как сделать разговор полезным и приятным Как сделать объемную звезду своими руками Как сделать то, что делать не хочется? Как сделать погремушку Как сделать так чтобы женщины сами знакомились с вами Как сделать идею коммерческой Как сделать хорошую растяжку ног? Как сделать наш разум здоровым? Как сделать, чтобы люди обманывали меньше Вопрос 4. Как сделать так, чтобы вас уважали и ценили? Как сделать лучше себе и другим людям Как сделать свидание интересным?


Категории:

АрхитектураАстрономияБиологияГеографияГеологияИнформатикаИскусствоИсторияКулинарияКультураМаркетингМатематикаМедицинаМенеджментОхрана трудаПравоПроизводствоПсихологияРелигияСоциологияСпортТехникаФизикаФилософияХимияЭкологияЭкономикаЭлектроника






The Menlo Park Laboratory





During his most inventive years, Edison conducted experiments at his Menlo Park New Jersey, laboratory. He did not work alone. A team of talented workers assisted him all hours of the day and night. These men had the skills to make Edison's ideas and sketches into real devices of wood, wire, glass and metal.

The laboratory at Menlo Park was an "invention factory and a business. Bookkeepers and secretaries kept track of the money needed to run the business.

On December 31, 1879, Thomas Edison demonstrated his most famous invention, the first practical incandescent electric lamp. He was not, however, the first inventor to experiment with electric light. When Edison began testing possibilities for incandescent lamps, the arc light was already becoming popular for lighting streets, department stores and other large areas.

Incandescent lamps make light by using electricity to heat a thin strip of material (called filament) so hot that it glows. Many inventors tried to perfect incandescent lamps to "subdivide" electric light or make it smaller and weaker. These lamps are examples of less successful versions of the incandesce lamp patented by other inventors before Edison completed his practical lamp in 1879.

One of the important features of Edison's lamp and electrical sys-tem was the simple, modern socket familiar us today.

Edison tried to find a material that would become incandescent and not melt when heated by electricity. For a long time, he tried platinum, but finally he made his filaments by carbonizing a kind of cardboard called Bristol board.

In earlier lamps, too much oxygen caused the filaments to burn. Edison acquired the best vacuum pumps so he could empty his bulbs of as much air as possible. Because of this, his carbon filaments did not burn.

Edison's men used vacuum pumps to evacuate electric lamps. Edison also developed an entire system to make electricity and distribute it to many places at the same time. Edison's system included dynamos, switches, electric meters, fuses, distribution lines and regulators.

Edison spent the next few years working on an electrical system that would be successful commercially. This meant he had to be certain that he could make a central power station and that his electricity would be cheap enough for people to afford.

Soon Edison demonstrated that his system could become a commercial success. Harper's Weekly published this drawing of men laying tubes for electrical wires to Edison's system in June, 1882. That year, the Pearl Street generating station began to supply electricity to streets and buildings in a small area of New York City.

Date: 2015-07-27; view: 594; Нарушение авторских прав; Помощь в написании работы --> СЮДА...



mydocx.ru - 2015-2024 year. (0.006 sec.) Все материалы представленные на сайте исключительно с целью ознакомления читателями и не преследуют коммерческих целей или нарушение авторских прав - Пожаловаться на публикацию