-
by Thomas Savery.
-
-
-
-
-
Orginal use was for communication in war.
you record your masseges, the it will be send to a transducer, then it turns into an alektronic signal. now it'is send to a transmitter send throgh waves to a receiver. -
-
Developed in the mid-1870s by Alexander Graham Bell¨
-
-
In November 1881, French inventor Gustave Trouvé demonstrated a working three-wheeled automobile powered by electricity at the International Exposition of Electricity, Paris.[16]
-
by Thomas Robins
-
-
-
-