Question

Napisz krótką notatkę na temat telefonu, kto i kiedy, i w jaki sposób go wynalazł po angielsku

Answer 1

It is generally believed that the telephone invented in 1876 Alexander Graham Bell. Recent studies suggest that the first manufacturer of the device was an Italian man named Antonio Meucci. And sixteen years before Bell. The fact is that both need to speaker, microphone, cable and electricity. Sounds simple and brilliant, just like all invention. You could say that it was thanks to these two gentlemen began the era of communication. Already around 1881, Nikola Tesla (the inventor limited the Tesla coil and solar) has developed a prototype of the device for wireless communication. His studies have provided a foundation for the future structure of the radio. The first attempt to start without cable telephony took place 40 years and 50 twentieth century, for example, two-way radios installed in police cars, which allowed for about six calls (before it rained battery) and initially require the operator connecting the call. It also launched in 1956 by Ericsson "portable" device about the size of suitcases, weighing 40 kg and the price similar to that of a pretty good car. About one hundred customers could call it the city of Stockholm and within 30 km from the city. In 1971, Finland launched the first commercial mobile wireless network generation zero.