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  2. Olivia Rodrigo - Wikipedia

    en.wikipedia.org/wiki/Olivia_Rodrigo

    Olivia Isabel Rodrigo (born February 20, 2003) is an American singer-songwriter and actress. She first became known for starring on the Disney Channel series Bizaardvark (2016–2019) and the Disney+ series High School Musical: The Musical: The Series (2019–2022). Rodrigo signed with Geffen Records in 2021, releasing the international chart ...

  3. Radio spectrum - Wikipedia

    en.wikipedia.org/wiki/Radio_spectrum

    The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz ). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication. To prevent interference between different users, the generation and transmission of radio ...

  4. Wireless sensor network - Wikipedia

    en.wikipedia.org/wiki/Wireless_sensor_network

    Wireless sensor network. Wireless sensor networks ( WSNs) refer to networks of spatially dispersed and dedicated sensors that monitor and record the physical conditions of the environment and forward the collected data to a central location. WSNs can measure environmental conditions such as temperature, sound, pollution levels, humidity and wind.

  5. List of WLAN channels - Wikipedia

    en.wikipedia.org/wiki/List_of_WLAN_channels

    Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.

  6. Electrical engineering - Wikipedia

    en.wikipedia.org/wiki/Electrical_engineering

    Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after the commercialization of the electric telegraph, the telephone ...

  7. ESPN - Wikipedia

    en.wikipedia.org/wiki/ESPN

    ESPN (an abbreviation of its original name, the Entertainment and Sports Programming Network [2]) is an American international basic cable sports channel owned by The Walt Disney Company (80% and operational control) and Hearst Communications (20%) through the joint venture ESPN Inc. The company was founded in 1979 by Bill Rasmussen, Scott ...