applications of-em-waves

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• Wireless Communication

Applications of EM Waves

Electromagnetic Waves > Applications of EM Waves


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• Wireless operations permit services, such as long-range communications, that

are impossible or impractical to implement with the use of wires.

• The most common wireless technologies use electromagnetic wireless

telecommunications, such as radio.

• Less common methods of achieving wireless communications include the use of

light, sound, magnetic, or electric fields.

Wireless Communication


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Two cellular phones

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Electromagnetic Waves > Applications of EM Waves

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Appendix

Key terms

• conductor A material which contains movable electric charges.

• radio wave Electromagnetic radiation having a wavelength between about .5 centimeters and 30,000 meters; used for the broadcasting of radio and television signals.

• telecommunication The science and technology of the communication or messages over a distance, especially using electric, electronic or electromagnetic impulses.


Electromagnetic Waves

Two cellular phonesThe Qualcomm QCP-2700, a mid-1990s candybar style phone, and an iPhone 4S, a current production smartphone.


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Less common methods of achieving wireless communications include

A) use of light, sound, radio, and infra-red signals

B) use of light, sound, magnetic, and electric fields

C) use of magnetic fields, electric fields, radio, and infra-red signals

D) use of radio and infra-red signals

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Less common methods of achieving wireless communications include

A) use of light, sound, radio, and infra-red signals

B) use of light, sound, magnetic, and electric fields

C) use of magnetic fields, electric fields, radio, and infra-red signals

D) use of radio and infra-red signals


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One of the best-known examples of wireless technology is the

A) mobile (or cellular) phone

B) cable television

C) fiber-optic communication system

D) telephone network



The most common wireless technologies use

A) magnetic fileds

B) electric fields

C) electromagnetic wireless telecommunications, such as radio

D) light and sound

Attribution

• Wikipedia. "Wireless communication." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Wireless_communication

• Wikipedia. "Wireless communication." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Wireless_communication

• Wiktionary. "telecommunication." CC BY-SA 3.0 http://en.wiktionary.org/wiki/telecommunication

• Wiktionary. "radio wave." CC BY-SA 3.0 http://en.wiktionary.org/wiki/radio+wave

• Wikipedia. "conductor." CC BY-SA 3.0 http://en.wikipedia.org/wiki/conductor




http://en.wikipedia.org/wiki/Wireless_communication


http://en.wikipedia.org/wiki/Wireless_communication


http://en.wiktionary.org/wiki/telecommunication


http://en.wiktionary.org/wiki/radio+wave


http://en.wikipedia.org/wiki/conductor

applications of-em-waves

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