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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 angle print that page


The contact angle is the angle at which a liquid / vapor interface meets a solid surface . The contact angle is specific for any given system and is determined by the interactions across the three interfaces. Most often the concept is illustrated with a small liquid droplet resting on

Stud contact system print that page

The Stud Contact System is a once obsolete ground-level power supply system for electric trams . Studs were set in the road at intervals and connected to a buried electric cable by switches operated by magnets on the tramcars. Current was collected from the studs by a "skate" or " ski collector

wikipedia.org | 2011/8/17 8:38:59

Pre-Columbian trans-oceanic contact print that page


ambiguous or circumstantial evidence cited by proponents. Only one instance of pre-Columbian European contact – the Norse settlement at L'Anse aux Meadows in Newfoundland, Canada c. 1000 CE – is regarded by scholars as demonstrated. [ 1 ] The scientific responses to other pre-Columbian

Contact mechanics print that page


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

Thermal contact conductance print that page

In physics , thermal contact conductance is the study of heat conduction between solid bodies in thermal contact . The thermal contact conductance coefficient , h c , is a property indicating the thermal conductivity , or ability to conduct heat , between two bodies in contact . The inverse

wikipedia.org | 2011/8/23 14:11:08

Eye contact print that page


In human beings , eye contact is a form of nonverbal communication and is thought to have a large influence on social behavior . It is believed to show personal involvement and create intimate bonds . [ citation needed ] Mutual gaze narrows the physical gap between humans. [ citation needed

First contact (science fiction) print that page


xenophobia , transcendentalism , and basic linguistics by adapting the anthropological topic of first contact to extraterrestrial cultures. Though beyond the scope of this article, the concept of 'first contact ' extends into philosophical realms, particularly when discussing how the human

Urushiol-induced contact dermatitis print that page


large number of species containing urushiol irritants Blistering 48 hours after urushiol contact Poison ivy rash after 2 days Urushiol-induced contact dermatitis is contracted by contact with a plant or any other object containing urushiol oil. The oil adheres to almost

Contact lens print that page


A contact lens (also known simply as contacts for a pair) is a corrective , cosmetic , or therapeutic lens usually placed on the cornea of the eye . Leonardo da Vinci is credited with describing and sketching the first ideas for contact lenses in 1508, but it was more than 300 years