Theme : Edison's discovery. Electric lamp

Electric lamp.

the greatest discoveries in the history of mankind, of great

importance.

world, where there was no electricity, it has become an

inalienable, indispensable part of the life of any civilized person

However, the question of who invented the electric bulb first can not be given an unambiguous answer.

Petrov, Devi, Foucault, Yablochkov, Edison, Lodygin, Swann and many more inventors who applied their talent, mind and labor to the present invention

light bulb.

even, bright, unblinking light and served for a long time,

Edison, through numerous experiments, sought to find suitable material for the filament, as well as learn how to create a highly sparse space inside the balloon. After numerous experiments, he found the most suitable material - from charred bamboo fibers and in the same year Edison in the presence of three thousand people demonstrated the first light bulb with a long service life.

mass production, the service life of which amounted to 800-1000

hours. Such lamps were made almost thirty years, but the future was for the light bulbs with a metallic thread, which will be produced only in the XX century.