City Pedia Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Wireless device radiation and health - Wikipedia

    en.wikipedia.org/wiki/Wireless_device_radiation...

    Since at least the 1990s, scientists have researched whether the now-ubiquitous radiation associated with mobile phone antennas or cell phone towers is affecting human health. [1] Mobile phone networks use various bands of RF radiation, some of which overlap with the microwave range. Other digital wireless systems, such as data communication ...

  3. Screen time - Wikipedia

    en.wikipedia.org/wiki/Screen_time

    Screen time is the amount of time spent using a device with a screen such as a smartphone, computer, television, video game console, or a tablet. [1] The concept is under significant research with related concepts in digital media use and mental health. Screen time is correlated with mental and physical harm in child development. [2]

  4. Telecommunications - Wikipedia

    en.wikipedia.org/wiki/Telecommunications

    Telecommunication systems are occasionally "duplex" (two-way systems) with a single box of electronics working as both the transmitter and a receiver, or a transceiver (e.g., a mobile phone). [41] The transmission electronics and the receiver electronics within a transceiver are quite independent of one another.

  5. Electromagnetic interference - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_interference

    Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction. [1] The disturbance may degrade the performance of the circuit or even ...

  6. High-frequency Active Auroral Research Program - Wikipedia

    en.wikipedia.org/wiki/High-frequency_Active...

    The insights gleaned at HAARP will enable scientists to develop methods to mitigate these effects to improve the reliability or performance of communication and navigation systems which would have a wide range of both civilian and military uses, such as an increased accuracy of GPS navigation and advances in underwater and underground research ...

  7. Communication - Wikipedia

    en.wikipedia.org/wiki/Communication

    This is an accepted version of this page This is the latest accepted revision, reviewed on 10 October 2024. Transmission of information For other uses, see Communication (disambiguation). "Communicate" redirects here. For other uses, see Communicate (disambiguation). There are many forms of communication, including human linguistic communication using sounds, sign language, and writing as well ...

  8. Bluetooth - Wikipedia

    en.wikipedia.org/wiki/Bluetooth

    Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to 10 metres (33 ft).

  9. 5G - Wikipedia

    en.wikipedia.org/wiki/5G

    Wireless network technologies. In telecommunications, 5G is the fifth-generation technology standard for cellular networks, which cellular phone companies began deploying worldwide in 2019, and is the successor to 4G technology that provides connectivity to most current mobile phones. Like its predecessors, 5G networks are cellular networks, in ...