Презентация, доклад по английскому языку Famous inventions (5 класс)

or not, serious or just for pleasure and entertainment as a chewing gum!
Invented by: Thomas Adams
Nationality: American
Date: in the 1870s
Purpose: to silently exercise the jaws

largely music recording.

Tape Recorder(and Walkman)

an electric light-source, to replace gas light or candles.

Electric Light Buld

1979, NIT was introduced the first commercial cellular phone in Japan. They were introduced in Scandinavia in 1981, in Chicago, USA, on October 13, 1983 (by Motorola), and in Europe in the late 1980's. Early mobile FM (frequency modulation radio was invented by Edwin H. Armstrong in 1935) radio telephones had been in use in the USA since 1946, but since the number of radio frequencies are very limited in any area, the number of phone calls was also very limited.

CELLULAR PHONE