5 INVENTIONSENGLISH PERFORMANCE TASK

TELEPHONE

Alexsander Graham Bell was born in Edinburgh but then became an American citizen. Was thinking how you can help the deaf. Sound waves can be converted into electrical current, then the electric current in a circuit can be converted into sound at the other end re-thought. It was the year 1876. A day in a vehicle which is designed to carry voice experiments, while pants acid was poured into the battery. Assistance from Thomas Watson, Watson isn’t knowing that there is another side of the building asked for help.

TELEPHONE

After that describes what is happening in the lab notes: "Mouthpiece told the following sentence: 'Mr. Watson, come here. Want to see you. 'No wonder one thing, but what I said understand a word he said. Then we changed places; Watson, when you read a few chapters from the book mouthpiece heard from the receiver. The sound heard high, but it was vague and muffled, in the end, very clear and understandable manner "Mr. Bell, do you understand what I say?" … Thus, the first telephone was invented in 1876.

TELEPHONE

BULB

English Joseph Swan and American Thomas Edison, surprisingly both aware of each other ,in the year 1878-1879, then by last long (about 12-13 hours) had made bulbs. If the bulbs they use in wire was charred cotton fibers. Later in 1880, Edison carbonized bamboo fiber made from the bulb lasts up to 40 hours. Other inventors have continued their work in. But none that we use today was not the bulb. Finally, in the years 1906-10 William Coolidge has developed today's modern light bulb. Here are those days we use these bulbs.

BULB

TELEVISION

• Television in 1923, by John Logie Baird in England was invented in the town of Hastings. First television appearance was published in 1926, again by Baird. Initially, the quality of the images flickering and as dots was developed by Baird. Baird's television system using mechanical disks were returned. In the early 1930s, television began to be sold electronic goods.

TELEVISION

Color TVs

Color television work has gained momentum in the 1940s. The first color television in the 1950s, went on sale in the U.S. . In the United States in the 1960s began to be used widely.

TELEVISION

SEWING MACHINE

• In 1830 Thimonnier Barthelemy sewing machine was invented. A rotating wheel with foot pedal on the machine, the needle was downloading uninstall. But many tailors in that period, you will lose your job for fear of them had destroyed 80 of these machines.

SEWING MACHINE

PAPERCLIP

• In 1900, Johann Vaaler invented.To keep the paper tightly, consisting of two rings intertwined, has designed an original product consists of a metal wire. Vaaler 's "paperclip" as he called it, this design has remained virtually unchanged until today.

PAPERCLIP

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BİBLİOGRAPHY• http://

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