Coloured X-ray of a mobile telephone
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Coloured X-ray of a mobile telephone
Mobile phone. Coloured X-ray of a mobile phone showing various components such as the circuit boards (blue, lower frame), the earpiece (red at upper centre) and the antenna (at upper left). Mobile or cellular phones use low-power radio signals to transmit calls to a base station in the users local area, or cell. A wide range of frequencies can be used in each cell because the signals are too weak to interfere with those in other cells. Base stations relay calls by cable to switching centres, from where calls can be transferred to other base stations, to the conventional telephone exchange, or to satellite stations for international calls
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6428293
© D. ROBERTS/SCIENCE PHOTO LIBRARY
Circuit Board Communication Communications Communications Technology Mobile Mobile Telephone Technological Communication Telephone
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