0
The thing about electromagnetic waves that makes them useful for communication
is that we know how to generate them and how to detect them. As soon as you
have that ability, you're ready to move information from one place to another.
After that, the only question is: How do you put the information onto the waves ?
The answer is: Change something on the waves, according to a pattern that the
sender and the receiver agree on.
What is there about a wave that you can change ? Not much ... only the wave's
amplitude and its frequency (wavelength), and that's it! Can you do anything with
those ?
Example: The easiest way to change the amplitude of the wave is to turn it on and off.
You can use a flashlight or a radio transmitter, turn it on and off in some pattern that
you've worked out. If you use both long and short flashes, you can call it "Morse Code".
If all the flashes are the same length but they come at different times, you can call it
"digital communication". As long as somebody else can see your flashlight or receive
your radio signal, you can send them messages if they understand your patterns.
After that, the sky is the limit. You can get fancy, change the amplitude by small amounts,
change the frequency by large or small amounts, change them fast or slow, change them
both at the same time, and work out ways to load tremendous amounts of information
onto an electromagnetic wave. Once you accomplish that, you earn the right to use
big fancy names for your methods, like 'Amplitude Modulation', 'Frequency Modulation',
'Phase Modulation', and a few of my favorites: 'Seven-level Partial Response Modulation',
'Quadrature Phase Shift Keying', and '256-state Quadrature Amplitude Modulation'.
But all of them are just different systems for changing the amplitude and frequency
of a wave in definite patterns, and it's the patterns that carry the information.
Electromagnetic waves carry information through variations in their frequency, amplitude, and phase. Different types of modulation techniques, such as amplitude modulation (AM) and frequency modulation (FM), are used to encode information onto the electromagnetic waves. These variations can then be detected and decoded by receivers to retrieve the original information.
For example, radio waves are used to transmit signals, in radio and television. You can also use light signals; light is a type of electromagnetic wave. For example, when you smile at someone, your smile is communicated to him by means of electromagnetic light waves which are incident on your face, reflected from it, and enter his eyes.
Add your answer:
Earn +20 pts
How can electromagnetic waves carry data?
Electromagnetic waves can carry data by modulating the amplitude, frequency, or phase of the wave to encode information. This modulation scheme allows for the transmission of data signals through variations in the electromagnetic wave, which can be demodulated and decoded at the receiving end to retrieve the original information.
What do waves carry or transfer?
Waves can carry energy and information across space. The type of wave determines what exactly is being carried - for example, sound waves carry energy that we perceive as sound, while electromagnetic waves carry energy and information in the form of light or radio signals.
What two things do waves carry?
Waves carry energy and information as they propagate through a medium. This allows them to transmit signals, transfer power, and create vibrations in various forms, such as sound waves and electromagnetic waves.
What do different waves carry carry from one place to another?
Different waves can carry energy or information from one place to another. For instance, electromagnetic waves like light carry energy, while sound waves carry vibrations that our ears perceive as sound. Water waves transfer energy through the water, such as in ocean waves.
What waves transmit information from antenna to another?
Electromagnetic waves, such as radio waves, transmit information from one antenna to another. These waves carry the signal that contains the information being transmitted, like radio broadcasts, Wi-Fi signals, or cellular communication.
Electromagnetic waves dont carry any matter what do they carry?
Electromagnetic waves carry energy and information. Energy is transferred through the oscillation of electric and magnetic fields, while information can be encoded in the frequency, amplitude, and phase of the wave.
What do electo magnetic waves carry?
Electromagnetic waves always carry energy, and may alsocarry information, from place to place.
What do waves carry as they move?
mechanical waves carry mechanical energy and electromagnetic waves carry electromagnetic energy.
How can electromagnetic waves carry data?
Electromagnetic waves can carry data by modulating the amplitude, frequency, or phase of the wave to encode information. This modulation scheme allows for the transmission of data signals through variations in the electromagnetic wave, which can be demodulated and decoded at the receiving end to retrieve the original information.
What do waves carry or transfer?
Waves can carry energy and information across space. The type of wave determines what exactly is being carried - for example, sound waves carry energy that we perceive as sound, while electromagnetic waves carry energy and information in the form of light or radio signals.
What kind of wave carries energy?
mechanical waves carry mechanical energy and electromagnetic waves carry electromagnetic energy.
What two things do waves carry?
Waves carry energy and information as they propagate through a medium. This allows them to transmit signals, transfer power, and create vibrations in various forms, such as sound waves and electromagnetic waves.
What do different waves carry carry from one place to another?
Different waves can carry energy or information from one place to another. For instance, electromagnetic waves like light carry energy, while sound waves carry vibrations that our ears perceive as sound. Water waves transfer energy through the water, such as in ocean waves.
What do waves do not require to carry energy?
Radiation, or electromagnetic waves do not require matter to carry energy.
What are electromagnetic waves that carry enerygy?
All of them do.
What waves transmit information from antenna to another?
Electromagnetic waves, such as radio waves, transmit information from one antenna to another. These waves carry the signal that contains the information being transmitted, like radio broadcasts, Wi-Fi signals, or cellular communication.
What are the longest wavelenGths on the electromagnetic spectrum called?
The longest wavelengths on the electromagnetic spectrum are called radio waves. They have the lowest frequencies and carry information through long distances.
