에디슨 안테나발명 및 여러가지 발명품 조사발표

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에디슨 안테나발명 및 여러가지 발명품 조사발표한 PPT

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1859 Edison lost his hearing
1862 Edison is taught how to use the telegraph and gets work as a “tramp” telegraph operator
1868 Edison’s first invention the electrical
vote recorder
1870 Edison’s opens a shop in New Jersey
1871 Edison marries Mary Stilwell
Edison’s Life Story
1877 Edison invents the first phonograph
1879 Edison and team make a light bulb that last for
more than thirteen hours.
1887 Edison opens new laboratory.
1890s Edison tries to invent a method of taking
the ore from rock.
1900s Edison works improving storage batteries for
electric cars.
1927-1931 Edison tries to find a new source of natural
rubber.
1931 Edison dies at age 84.
Edison’s Life Story
Automatic Telegraphy
⇒If Automatic Telegraphy use special paper which is punched though moss code.
high speed transmit.
Edison’s Achievements
Discover wave though moss telegraphy
⇒ Flame which comes to telegraphy key is that wave is radiated but at that time nobody know that.
Edison’s Achievements
Bell’s telephone Improvement
⇒ Bell’s telephone can not be long distance communication. So he found some error about Bell’s telephone. Therefore it can be long distance communication.
⇒ Variety of resister using carbon is presented new value about telephone.
Edison’s Achievements
Edison Effect
⇒Metal or metal oxide surface which is heated to 700~2700 ℃ get out electron.
⇒ Electron obtained by heat energy is separated to overcome electrostatic force about vibration. So it is bound to solid which is used vacuum tube and discharge tube.
Edison’s Achievements

참고자료

· ⇒http://100.naver.com/100.nhn?docid=110542
· ⇒http://www.edison.kr/korean/contents/cyber/viewbody.php?code=cyber&page=1&number=52&keyfield=&key=&mode=view&category=14
· ⇒http://blog.naver.com/hallasanda?Redirect=Log&logNo=90047573226
· ⇒http://edison.rutgers.edu/transmit.htm