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- Portugal (61755 bytes)
229: [[image:Mapa de Portugal tribos principais.png|thumb|right|200px|Pre-Roman tribes in Portugal an...
264: [[image:Video.svgz.png|15px]] [http://www.worldconnection.nl/movies/test...
265: <br>[[image:Loudspeaker.png]] [http://www.cristinabranco.com/cgi-bin/get/down...
266: <br>[[image:Loudspeaker.png]] [http://www.arlivre.com/audio/aclr8.mp3 Portugu... - Babe Ruth (55357 bytes)
166: ... the day was when his name was announced over the loudspeaker, and the crowd erupted into a loud roar. Ruth sp... - Earthquake (13859 bytes)
11: ... beyond its epicenter, though. Just as a large [[loudspeaker]] can produce a greater volume of sound than a sm... - Telharmonium (3225 bytes)
10: ...o large paper cones — a primitive form of [[loudspeaker]]. Indeed, Cahill was noted for saying that ideal... - Steel guitar (2051 bytes)
6: ...a kind of internal metal (usually spun aluminium) loudspeaker, to amplify the sound. - Ondes Martenot (2090 bytes)
2: ...Electronic filter|filter]] banks and switchable [[loudspeaker]]s. The instrument is especially known for its e... - Nikola Tesla (29894 bytes)
53: ...mplifier). The device could act as an [[audio]] [[Loudspeaker|speaker]] (not an audio [[transducer]]). For a wh...
77: ...iew he gave in [[1916]], Tesla invented a type of loudspeaker. The sounds were of the quality of the telephones...
98: [[Image:BrochureWardenclyffe_.PNG|thumb|246px|right|Wardenclyffe Tower located in [... - Magnet (13875 bytes)
2: [[image:Magnet0873.png|right|thumb|250px|Magnetic lines of force of a ba...
74: *[[Loudspeaker]]s and [[microphone]]s: Loudspeakers actually rely on a combination of a permanent ma...
76: ...ectromagnet and a permanent magnet, and much like loudspeakers, they convert electric energy into mechanical en...
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