YOU / MAY / FIND / HARD / ACCEPT / ILLNESS.THE INVENTION OF THE PHO...

5. You / may / find / hard / accept / illness.The invention of the phonograph happened quite by accident. Thomas Edison moved to Menlo Park, NewJersy in 1876, where he established an industrial research laboratory. There, Edison was working on a carbontelephone transmitter to improve the existing Bell telephone system.In that laboratory a year later, Edison invented the phonograph while he was trying to improve atelegraph repeater. He attached a telephone diaphragm to the needle in the telegraph repeater; in this way, hewas able to reproduce a recording that could be played back. After he made some improvements to themachine, he tested it. He recited “Mary Had a Little Lamb” into the machine and played his voice back to avery surprised audience.