Light Bulb
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Thomas Edison was called a “wizard” because of his many important inventions. He created more than 1,000 devices on his own or with others. His best-known inventions include the phonograph (record player), the lightbulb, and the motion-picture projector.
The lightbulb is an electric incandescent lamp based on a glowing metallic filament enclosed within a glass shell filled with an inert gas such as nitrogen.
Thomas Alva Edison was born on February 11, 1847, in Milan, Ohio. He experienced hearing loss at an early age. He was an imaginative and curious child. He did poorly in school, though, perhaps because he could not hear his teacher. His mother then educated him at home.
When Thomas was a teenager he became a telegraph operator. Telegraphy was one of the nation’s most important communication systems at the time. Thomas was good at sending and taking messages in Morse code. He loved tinkering with telegraphic instruments, and he developed several improvements for them. By early 1869 he had quit his telegraphy job to become a full-time inventor. Although most of his life was devoted to his work, Edison’s family was also important to him. He married twice and had six children. Edison died on October 18, 1931.
The lightbulb is an electric incandescent lamp based on a glowing metallic filament enclosed within a glass shell filled with an inert gas such as nitrogen.
Thomas Alva Edison was born on February 11, 1847, in Milan, Ohio. He experienced hearing loss at an early age. He was an imaginative and curious child. He did poorly in school, though, perhaps because he could not hear his teacher. His mother then educated him at home.
When Thomas was a teenager he became a telegraph operator. Telegraphy was one of the nation’s most important communication systems at the time. Thomas was good at sending and taking messages in Morse code. He loved tinkering with telegraphic instruments, and he developed several improvements for them. By early 1869 he had quit his telegraphy job to become a full-time inventor. Although most of his life was devoted to his work, Edison’s family was also important to him. He married twice and had six children. Edison died on October 18, 1931.