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  2. Piezoelectric speaker - Wikipedia

    en.wikipedia.org/wiki/Piezoelectric_speaker

    A piezoelectric speaker (also known as a piezo bender due to its mode of operation, and sometimes colloquially called a "piezo", buzzer, crystal loudspeaker or beep speaker) is a loudspeaker that uses the piezoelectric effect for generating sound. The initial mechanical motion is created by applying a voltage to a piezoelectric material, and ...

  3. Animal Jam Classic - Wikipedia

    en.wikipedia.org/wiki/Animal_Jam_Classic

    Animal Jam Classic, [1] formerly known as Animal Jam, is a massively multiplayer online game developed by WildWorks and recommended for kids up to the age of 12. It was launched in 2010, in collaboration with the National Geographic Society . [ 2 ]

  4. Piezoelectricity - Wikipedia

    en.wikipedia.org/wiki/Piezoelectricity

    Piezoelectric balance presented by Pierre Curie to Lord Kelvin, Hunterian Museum, Glasgow. Piezoelectricity [note 1] is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter such as bone, DNA, and various proteins—in response to applied mechanical stress.

  5. Tweeter - Wikipedia

    en.wikipedia.org/wiki/Tweeter

    A tweeter or treble speaker is a special type of loudspeaker (usually dome, inverse dome or horn-type) that is designed to produce high audio frequencies, typically from 2,000 to 20,000 Hz. The name is derived from the high pitched sounds made by some birds (tweets), especially in contrast to the low woofs made by many dogs , after which low ...

  6. Thin-film bulk acoustic resonator - Wikipedia

    en.wikipedia.org/wiki/Thin-film_bulk_acoustic...

    The use of thin film piezoelectric materials in electronics began in the early 1960s at Bell Telephone Laboratories/Bell Labs. Earlier piezoelectric crystals were developed and used as resonators in applications like oscillators with frequencies up to 100 MHz. Thinning was applied for increasing the resonance frequency of the crystals.

  7. Piezoelectric speakers - Wikipedia

    en.wikipedia.org/?title=Piezoelectric_speakers&...

    Retrieved from "https://en.wikipedia.org/w/index.php?title=Piezoelectric_speakers&oldid=677782584"This page was last edited on 25 August 2015, at 13:48

  8. WildWorks - Wikipedia

    en.wikipedia.org/wiki/WildWorks

    Animal Jam Classic is a virtual world for children, being developed within a partnership with the National Geographic Society. Users are placed in an online world called Jamaa, and are presented with a number of games, spaces to interract with other players, and light edutainment features in the form of games and fun facts within the gameworld.

  9. Buzzer - Wikipedia

    en.wikipedia.org/wiki/Buzzer

    Piezoelectric disk beeper. A piezoelectric element may be driven by an oscillating electronic circuit or other audio signal source, driven with a piezoelectric audio amplifier. Sounds commonly used to indicate that a button has been pressed are a click, a ring or a beep.