"When wireless is perfectly applied the whole earth will be converted into a huge brain, which in fact it is, all things being particles of a real and rhythmic whole. We shall be able to communicate with one another instantly, irrespective of distance. Not only this, but through television and telephony we shall see and hear one another as perfectly as though we were face to face, despite intervening distances of thousands of miles; and the instruments through which we shall be able to do his will be amazingly simple compared with our present telephone. A man will be able to carry one in his vest pocket." [Nikola Tesla, source unknown]
Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.
Radio systems need a transmitter to modulate (change) some property of the energy produced to impress a signal on it, for example using amplitude modulation or angle modulation (which can be frequency modulation or phase modulation). Radio systems also need an antenna to convert electric currents into radio waves, and vice versa. An antenna can be used for both transmitting and receiving. The electrical resonance of tuned circuits in radios allow individual stations to be selected. The electromagnetic wave is intercepted by a tuned receiving antenna. A radio receiver receives its input from an antenna and converts it into a form that is usable for the consumer, such as sound, pictures, digital data, measurement values, navigational positions, etc. Radio frequencies occupy the range from a 3 kHz to 300 GHz, although commercially important uses of radio use only a small part of this spectrum.
A radio communication system sends signals by radio. The radio equipment involved in communication systems includes a transmitter and a receiver, each having an antenna and appropriate terminal equipment such as a microphone at the transmitter and a loudspeaker at the receiver in the case of a voice-communication system. Wikipedia, Radio
Towards the end of the 1897th century Bolognese physicist Augusto Righi began to become interested in studying electromagnetic waves, a work that culminated with the publication of the volume ?? The Optics of Electrical Obscillations ?? (1897). Righi taught for more than thirty years at the University of Bologna where a young man of good family, and without a regular school career, could attend his lessons. That young man was William Marconi.
Marconi probably immediately understood the potential of the oscillator-receiver system and began self-taught conducting experiments in radio wave transmission, first at reduced distances and then ever greater. The first great success was achieved when radio signals crossed the Channel, exceeding the distance of 51 km. But how could we have done more?
It was well known that electromagnetic waves spread in a straight line, so it was permissible to overcome major obstacles and radio signals could be picked up. But how did we behave when Earth's warp was the obstacle to face? It was thought, rightly, that the signal travelling a not negligible distance would significantly diminish and that the receiver wouldn't catch any waves.
In 1901, Marconi organized one of the most expensive and important experiments of his life: he installed two radio antennas one in Cornwall (southwestern Great Britain) and one in St. John's, on Canadian island of Newfoundland. At 12 pm on 12 December Marconi receives the three dots of the letter S transmitted by the radio station in Cornwall. The signal is heard and traveled a distance of 3.000 km! It's the first transatlantic telegraphic transmission and it's the official birth of the radio; the Times talks about the experiment as ?? the greatest scientific achievement of the era ". How is this even possible? Is the theory wrong? Actually the answer was given a few years later, around 1924, and it's the discovery of the ionosphere. In fact, the ionosphere acts like a mirror and makes the wave ?? bounce
During the years of the experiments Marconi was unaware of the presence of the ionosphere and there are many questions about his experimental method. In fact Marconi received the Nobel Prize for Physics in 1909 ?? in recognition of his contribution to the development of wireless telegraphy ", but he never earned his degree in physics.
Let's conclude with Emilio's words:
?? This is why it doesn't always happen that those who know things see right and those who don't know them wrong. Not all the time! Because he was happy with the radio, he tried to repeat the same feat with radar and his ignorance betrayed him there ?? [anonymous]
Schauberger
This naturalesque form of motion will now be once more reinstated in those places where there are inaccessible stands of precious timber, which are apparently untransportable with oxen, horse-teams, tractors, cable or forest railways, etc. and, as occurred at Neuberg in Steyrling, will be floated to its destination as circumstances demand with about a 90% saving in transport costs compared to the best transport systems presently available. Therefore at a time when, according to radio and press reports about 800 million people, i.e. about 1/3rd of the world's present population, are threatened with starvation, those people can be saved, whose only assets are those valuable timbers spared by modern forestry, because they were deemed irrecoverable, and who for this reason will be repaid in gold by nations with a high exchange rate, or in what is of far greater value today - food. For today whatever still stands in accessible forests - as every timber expert knows - is worth nothing, or precious little. Such products of forestry science are in any case unsuitable for export. [The Energy Evolution - Harnessing Free Energy from Nature, The Life-Current in Air and Water]
See Also
crystal radio
Mahlon Loomis real inventor of radio???
radio crystals
Radio Waves
Radiolysis
radiometry
radiophonic
Tesla Spirit Radio
Water Radiolysis
15.08 - Dissociating Water with X-Rays - Radiolysis