week 5 Step 1

Radio - a kind of wireless communication, in which as a carrier signal using radio waves, freely distributed in space.
Creator of the first successful system for the exchange of information via radio waves (wireless telegraphy) is Popov, created in 1895, a month later, Marconi, sensitive and reliable working radio, suitable for radio communications. In the first experiments on radio, performed in a physical office, and then in the garden Landmine officer class, the receiver discovered the radiation of radio signals sent by a transmitter at a distance of 60 m.