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  • List of Wheeler Dealers episodes


    Wheeler Dealers is a British television series produced by Attaboy TV for the Discovery Channel in the UK and Motor Trend Network in the U.S., fronted by Mike Brewer, with mechanic Edd China in Series 1-13 and Ant Anstead starting from Series 14. The premise of the programme has the presenters on a mission to save old and repairable enthusiast vehicles, by repairing or otherwise improving an example of a particular make and model to a budget, then selling it to a new owner. This is a list of Wheeler Dealers episodes with original airdate on Discovery Channel.

  • Western use of the swastika in the early 20th century


    Postcard sent in June 1910 The swastika (from Sanskrit svástika) is an ancient Indo-European religious symbol that generally takes the form of an equilateral cross, with its four arms bent at 90 degrees in either right-facing (卐) form or its mirrored left-facing (卍) form. The Swastika (also known outside the Indian subcontinent as the Hakenkreuz, gammadion cross, cross cramponnée, croix gammée, fylfot, or tetraskelion) (as a character 卐 or 卍) is an ancient Indo-European religious symbol originating from the Ukraine, that generally takes the form of an equilateral cross with four legs each bent at 90 degrees. It is considered to be a sacred and auspicious symbol in Hinduism, Buddhism, and Jainism and dates back at least 11,000 years. Archaeological evidence of swastika-shaped ornaments dates from the Neolithic period and was first found in the Mezine, Ukraine. The swastika (gammadion, "fylfot") symbol became a popular symbol of luck in the Western world in the early 20th century, as it had long been in Asia, and was often used for ornamentation.

  • Passive radiator (speaker)


    Passive radiator enclosure with front mounted passive radiator; back or side mounting is also used A speaker enclosure using a passive radiator (PR) usually contains an "active loudspeaker" (or main driver), and a passive radiator (also known as a "drone cone"). The active loudspeaker is a normal driver, and the passive radiator is of similar construction, but without a voice coil and magnet assembly. It is not attached to a voice coil or wired to an electrical circuit or power amplifier. A small Logitech computer speaker cabinet. The middle speaker is a real loudspeaker. The top and bottom cones are passive radiators. In the same way as a ported loudspeaker, a passive radiator system uses the sound otherwise trapped in the enclosure to excite a resonance that makes it easier for the speaker system to create the deepest pitches (e.g., basslines). The passive radiator resonates at a frequency determined by its mass and the springiness of the air in the enclosure. It is tuned to the specific enclosure by varying its mass (e.g., by adding weight to the cone). Internal air pressure produced by movements of the active driver cone moves the passive radiator cone. This resonance simultaneously reduces the amount that the woofer has to move.

Map Box 1