ВУЗ:
Составители:
Рубрика:
82
system work more effectively and faster. Later, he made a better microphone for
Bell’s invention, the telephone.
In 1877 he made a “phonograph” – the first ever sound recorder. The following
year he invented the light bulb. In 1889 he made a “kinetoscope” – a moving
picture machine. He also made films for his new machine, which made him rich. In
1903 he produced The Great Train Robbery, at that time the world’s longest film.
(It was ten minutes long!) Edison had made more than one thousand inventions
when he died at the age of eighty-four. In his honour, they switched off the lights
overall in America.
B.AlexandreGrahamBell
Alexandre Graham Bell was born in Edinburgh, Scotland in 1847. His family was
very close-knit, but had to face a lot of problems. His mother was deaf (she
couldn’t hear at all), and his father was a teacher of deaf children. That explains the
fact that young Alexandre became particularly interested in phonetics, the science
of speech, and acoustics, the science of hearing.
His family emigrated to Canada in 1870, and then moved on to the United States.
Two years later, Bell organised a school for teachers of deaf children in Boston,
where he offered his own system of teaching. Interestingly, but he was hardly
twenty-six years old when in 1875 he became a professor at the University of
Boston.
He invented the telephone by mistake. In 1875 he was just using a telegraph
machine. There was virtually something wrong with the machine, and Bell heard a
noise at the other end of the line.
With his assistant, Watson, he was investigating the technique of delivering and
obtaining messages. The following year, Bell was the first person to speak on the
telephone.
Bell managed to promote his invention and become rich. But his attitude to sick
Страницы
- « первая
- ‹ предыдущая
- …
- 80
- 81
- 82
- 83
- 84
- …
- следующая ›
- последняя »
