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Dipole Meaning and Definition in Dictionary

Dipole Meaning and Definition from WordNet (r) 2.0
    dipole n
  1. a pair of equal and opposite electric charges or magnetic poles separated by a small distance
  2. an aerial half a wavelength long consisting of two rods connected to a transmission line at the center [syn: dipole antenna}]

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Dipole Meaning and Definition in Wikipedia

Dipole can mean two things in physics. The first is an electric dipole which separates the positive charge from the negative charge. A simple example of this dipole is a pair of electric charges with the same magnitude but with the opposite type of charge (positive and negative) and are separated by a small distance from each other. The second is a magnetic dipole, a closed circulation of electric current. A simple example is a single loop of wire with electric current flowing through it.

An important characeristic of dipoles is their dipole moment, which is a vector quantity with both a magnitude and direction. An example of an electric dipole moment occurring is in a pair of electric charges with opposite signs. The dipole moment would point from the negative charge towards the positive charge. The magnitude of the moment is equal to the strength of each charge multiplied by the distance separating between the charges. An example of a magnetic dipole moment occurring is in a wire loop with flowing current. The magnetic dipole moment would point through the loop (according to the right hand rule), with a magnitude equal to the current in the loop times the area of the loop.

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Dipole Sample Sentences in News

  • Dipole Coil Resonant System Transfers Wireless Power At 5-meter Distance
    [ Watch The Video: Wireless Power Transfer Reaches Five Meters ] The Korea Advanced Institute of Science and Technology (KAIST) With a maximum output power of 209 W at 20 kHz, the Dipole Coil Resonant System can charge 40 smart phones simultaneously, even if the power source is 5 meters away The way electronic devices receive their power has changed tremendously o Read more on this news related to 'Dipole'
  • An El Nino year? Australia too sees rain deficit this monsoon in India
    The Indian Ocean Dipole (IOD), which indicates the impact of El Nino on the Indian subcontinent, is currently in a neutral state. Read more on this news related to 'Dipole'
  • Researchers charge 40 smartphones wirelessly from 5m
    Engineers from the Korean Advanced Institute of Science and Technology (KAIST) have developed a system that can power devices up to five metres away. The Dipole Coil Resonant System (DCRS) extends the range of inductive power transfer to a distance of five metres between the transmitter and receiver coils. It was demonstrated to charge 40 smartphones simultaneou Read more on this news related to 'Dipole'

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