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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 ...
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 up to 100 kHz. 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-frequency ...
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 ]
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We do need to go back in time a bit, but it's a surprisingly modern tale given how long Christmas has been celebrated. So, let's crack open the history of the Christmas nutcracker! Sanja Baljkas ...
The piezoelectric properties of quartz were discovered by Jacques and Pierre Curie in 1880. The vacuum tube oscillator was invented in 1912. [ 32 ] An electrical oscillator was first used to sustain the motion of a tuning fork by the British physicist William Eccles in 1919; [ 33 ] his achievement removed much of the damping associated with ...
The claim: White House will appear on sex offender registry after Trump takes office. A Nov. 9 post (direct link, archive link) on X, formerly Twitter, shows the exterior of the White House.“As ...