Radio frequency

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  • Radio Frequency
definition
  • Photons with a wavelength range: 100,000 to 1.00x10^11 nm
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Abstract from DBPedia
    Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around 20 kHz to around 300 GHz. This is roughly between the upper limit of audio frequencies and the lower limit of infrared frequencies; these are the frequencies at which energy from an oscillating current can radiate off a conductor into space as radio waves. Different sources specify different upper and lower bounds for the frequency range.

    電波(でんぱ、(英: radio wave)とは、電磁波のうち、比較的周波数の低いもの。日本の電波法などでは3000ギガヘルツ以下のものと定義される。

    (Source: http://dbpedia.org/resource/Radio_frequency)

    Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around 20 kHz to around 300 GHz. This is roughly between the upper limit of audio frequencies and the lower limit of infrared frequencies; these are the frequencies at which energy from an oscillating current can radiate off a conductor into space as radio waves. Different sources specify different upper and lower bounds for the frequency range.

    高周波(こうしゅうは)とは、電波、音波など、波形を構成するスペクトラムのうち比較的周波数の高いものを指す。音波の場合は、超音波と呼ばれることが多い。 「高周波」あるいは「低周波」は周波数に関する事項ではあるが、慣習上、「周波」と言い換えている。

    (Source: http://dbpedia.org/resource/Radio_frequency)