As long as a radio signal is shooting from one place to another through space, it's
a wave of electromagnetic fields. Once it hits an electrical conductor ... like a piece
of wire that happens to be part of an antenna (aerial) ... the electromagnetic fields
set up a small electric current in the conductor, and the signal has been "captured".
That small electric current runs directly into electronic equipment that's used to make
the current stronger, pick out the one single frequency from all the hundreds or
thousands of separate signals that have set up currents in the antenna as they
passed by, then make that one stronger again, and eventually strip the information
from it, and use the information to reconstruct the sound of a song, the voice of
a newscaster or a cellphone caller, a TV picture, the data off of the Wifi in your
house, or the data from ten different satellites for the GPS unit on your dashboard.
One of the primary goals of the art and science of antenna design is to squeeze
the maximum antenna current out of that incredibly weak electromagnetic signal
as it flies by.
Broadcast Radio
so people could communicate over long distances
broadcast
The section of the atmosphere known for its ability to bounce shortwave radio signals is the ionosphere. This region, located approximately 30 miles to 600 miles above the Earth's surface, contains ionized particles that reflect radio waves back to the Earth, allowing for long-distance communication. The ionosphere's reflective properties are particularly effective for shortwave frequencies, making it essential for radio broadcasting and international communication.
The first radio was invented by gugliemo marconi but jc Bose who first showed that radio signals could be sent over long distances without wires. Radio was invented in i921.Ansered byvaibhav gupta
How do THEY get back to earth?!
The ionosphere is the layer in the Earth's atmosphere responsible for bouncing back radio signals. It is composed of charged particles that reflect radio waves, allowing for long-distance communication via radio transmissions.
Radio antennas work by converting electrical signals into electromagnetic waves that can travel through the air. When a radio station transmits a signal, the antenna sends out electromagnetic waves. When a radio receiver picks up these waves, the antenna converts them back into electrical signals that can be processed and heard as sound. This process allows for the transmission and reception of radio signals over long distances.
From what I have researched, the answer to that is the Ionosphere-upper mesosphere/ lower thermosphere, though I do not know if that is 100% correct.
Amplitude Modulation and Frequency Modulation. They are different methods of transmitting radio signals. AM is good for transmitting radio signals long distance FM is good for transmitting radio signals short distances but better quality
The ionosphere is the layer of the atmosphere that reflects radio waves. This layer is able to reflect specific frequencies of radio waves back to Earth, allowing for long-distance communication using radio signals.
Broadcast Radio
Broadcast Radio
Earth has been broadcasting radio signals into outer space since the late 1800's.
i think.... and i only think this, it may not be correct, an antenna transmits as well as receives, an aerial only receives there is no difference between antenna and aerial. According to British spelling it is called Aerial and according to American English antenna. So there is no difference just the English In the U.S. sometimes antenna is used for rigid structures used to transmit or receive radio signals, while aerial is used for a simple wire hung between insulators used to transmit or receive radio signals.
so people could communicate over long distances
The ionosphere, a layer in the Earth's atmosphere that begins around 30 miles above the surface, aids in long-distance communication by reflecting radio waves back to Earth. This allows radio signals to be transmitted over long distances, such as for shortwave radio broadcasts or communication with satellites.