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They're man-made. Radio waves are eminated from various devices, not nature.
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∙ 14y ago
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What is meant by radio frequency interference?
Radio frequency interference (rfi) is simply either man-made or natural sources that interact with radio waves. A natural source - is the crackle you hear from your radio when there's a lightning storm between you and the transmitter. A man-made source - could be something like hearing a taxi-cab radio over a 'normal' radio program.
How do radio waves be used to determine the position of icebergs at sea?
Pretend there is a patient and the doctors need to see deep into his body, in a safe way. To start off, they use the MRI, which uses the radio waves to construct a computer image (of the tissue, they are looking at). The MRI device sends a short bursts of radio waves into the paitients body. The radio waves energize atoms (energize the patients particles inside his body)and make them line up. When the radio pulses are turned off the atoms return to there original position and the radio waves return to the machine (when the radio waves come back to the machine or when they return, the machine now has the picture of the tissue). It is kind of like a delivery man or getting your picture taken. For example, the delivery man... at first it is like a shock you get mail, then when it is done the delivery man leaves. He goes and deliveries it to someone else. So, then that person just recieved whatever you sent. Just like the machine, the machine just got whatever the radio waves gave it... the picture of the tissue.
When was the first ever radio made?
The first radio signal was sent in 1895 by an Italian man named Guglielmo Marconi, but Nikola Tesla is recognized by the Supreme Court in 1943 as the first man to patent radio technology.
What part or components of the radio tuner intercepts and coLLects the radio signal?
That would be the antenna ... before anything ever reaches the components of the tuner. The purpose of the antenna is to collect an electrical current in the conductor as the electromagnetic waves fly by it. Once you have that current, you're ready to extract useful material from it ... -- selecting the one signal you want from the hundreds that have created a current in your antenna; -- sifting the actual radio signal out of all the natural and man-made noises that also created currents in your antenna; -- stripping the information (intelligence ??) off of the signal; -- converting the electrical signal representing the information into a form that you can observe with your senses ... typically listening to it or viewing it.
What part of component of the radio tuner intercepts and collects the radio signal?
That would be the antenna ... before anything ever reaches the components of the tuner. The purpose of the antenna is to collect an electrical current in the conductor as the electromagnetic waves fly by it. Once you have that current, you're ready to extract useful material from it ... -- selecting the one signal you want from the hundreds that have created a current in your antenna; -- sifting the actual radio signal out of all the natural and man-made noises that also created currents in your antenna; -- stripping the information (intelligence ??) off of the signal; -- converting the electrical signal representing the information into a form that you can observe with your senses ... typically listening to it or viewing it.
What is an example of a man made source of radiation?
Examples: laser, X-rays, radio waves, etc.
What type of energy does the earth emit?
natural infrared radiation, and man-made radio energy
Is fur natural or man made?
It is natural but there are man-made imitations.
Is canvas natural or man-made?
It can be made from natural or man made fibres.
Is the great plain man made or natural feature?
natural feature
Is concrete natural or man made?
Is limestone natural or man made
What do topographic map symbols represent?
Man-made and Natural Resources
Is copper man made or natural?
it is all natural
Is rubber man made?
Rubber is man-made but has natural agents.
Are most natural calamities man made?
No "NATURAL" calamities are man made.
Is concrete slab man-made or natural?
Is limestone natural or man made
Is ceramics natural or man made?
Ceramic is man-made from a natural material.
