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Third rail print that page

WMATA_third_rail_at_West_Falls_Church

insulated brackets, typically at intervals of 10 feet (3.0 metres) or so. The trains have metal contact blocks called "shoes" which make contact with the conductor rail. The traction current is returned to the generating station through the running rails. The conductor rail is usually made

Videoconferencing print that page

Tandberg_Image_Gallery_-_telepresence-t3-side-view-hires

A videoconference or video conference (also known as a videoteleconference ) is a set of interactive telecommunication technologies which allow two or more locations to interact via two-way video and audio transmissions simultaneously. It has also been called 'visual collaboration' and

Curling print that page

Brier_045

Approximately late medieval Scotland Registered players 1,200,000 Characteristics Contact No Team members 4 per team (2 in Mixed Doubles ) Mixed gender See mixed curling Categorization Precision and accuracy Equipment Curling brooms, stones (rocks), curling shoes

Contact juggling print that page

Many of the techniques found in contact juggling, such as balancing or rolling a single ball or palm spinning (see " Baoding Balls "), have been performed for centuries. More variations were introduced by vaudevillians such as Paul Cinquevalli . In 1986, American juggler Tony Duncan was reported

wikipedia.org | 2011/8/30 2:36:45

Contact mechanics print that page

Kontakt_Spannungsoptik

hardness . Principles of contacts mechanics can be applied in areas such as locomotive wheel-rail contact , coupling devices, braking systems, tires , bearings , combustion engines , mechanical linkages , gasket seals, metalworking , metal forming, ultrasonic welding , electrical contacts

Phonograph print that page

EdisonPhonograph

The phonograph record player , or gramophone (letter + sound) is a device introduced in 1877 that continued common use until the 1980s for reproducing (playing) sound recordings , although when first developed, the phonograph was used to both record and reproduce sounds. The recordings played

Basketball print that page

Jordan_by_Lipofsky_16577

then resume dribbling). Various violations are generally called "fouls". Disruptive physical contact (a personal foul ) is penalized, and a free throw is usually awarded to an offensive player if he is fouled while shooting the ball. A technical foul may also be issued when certain infractions

Pinball print that page

Theatre_of_magic_pinball

electrification. A company called Pacific Amusements in Los Angeles, California , USA produced a game called Contact in 1933. Contact had an electrically powered solenoid to propel the ball out of a bonus hole in the middle of the playfield. Another solenoid rang a bell to reward the player

Water polo print that page

WaterPolo

Seven players from each team (six field players and a goalkeeper) are allowed in the playing area of the pool during game play. Visiting team field players wear numbered and usually White caps, and home team field players wear usually Blue caps (though any other contrasting colors are now allowed

Lake Burley Griffin print that page

Lake_Burley_Griffin_Canberra-MJC02

Griffin designed the lake with many geometric motifs, so that the axes of his design lined up with natural geographical landmarks in the area. However, government authorities changed his original plans and no substantial work was completed before he left Australia in 1920. His scheme remained