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Diffusion of innovations print that page


In 1962 Everett Rogers , a professor of rural sociology published Diffusion of Innovations . In the book, Rogers synthesized research from over 508 diffusion studies and produced a theory for the adoption of innovations among individuals and organizations. The book proposed 4 main elements

Microsoft Surface print that page


Surface has been optimized to respond to 52 touches at a time. During a demonstration with a reporter, Mark Bolger, the Surface Computing group's marketing director, "dipped" his finger in an on-screen paint palette, then dragged it across the screen to draw a smiley face . Then he used all

Electrosurgery print that page


In electrosurgical procedures, the tissue is heated by an electric current . Although electrical devices may be used for the cauterization of tissue in some applications, electrosurgery is usually used to refer to a quite different method than electrocautery . The latter uses heat conduction

Nine-ball print that page


In recent decades, nine-ball has become the dominant tournament game in professional pool, in the World Pool-Billiard Association , Women's Professional Billiard Association and United States Professional Poolplayers Association . Matches proceed quickly, suitable for the time constraints

Heat sink print that page


light emitting diodes (LEDs). A heat sink is physically designed to increase the surface area in contact with the cooling fluid surrounding it, such as the air. Approach air velocity, choice of material, fin (or other protrusion) design and surface treatment are some of the design factors

2-meter band print that page


The 2-meter amateur radio band is a portion of the VHF radio spectrum, comprising frequencies stretching from 144.000  MHz to 148.000 MHz in International Telecommunication Union region (ITU) Regions 2 (North and South America plus Hawaii) and 3 (Asia and Oceania) [ 1 ] and from 144

Juggling print that page


The word juggling derives from the Middle English jogelen (to entertain by performing tricks), in turn from the Old French jangler . There is also the Late Latin form joculare of Latin joculari , meaning to jest. [ 1 ] "Juggling" may be used metaphorically, like "multi-tasking," to

Automobile handling print that page


The center of mass height, relative to the track, determines load transfer , (related to, but not exactly weight transfer ), from side to side and causes body lean. When tires of a vehicle provide a centripetal force to pull it around a turn, the momentum of the vehicle actuates load transfer

Unicycle print that page


A unicycle is a human-powered , single-track vehicle with one wheel. Unicycles resemble bicycles , but are less complex. A Torker unicycle Contents 1 History 2 Construction 3 Training aids 4 Types of unicycles 4.1 Freestyle unicycles 4.2 Trials unicycles 4.3

Corrective lens print that page


presbyopia . Glasses or "spectacles" are worn on the face a short distance in front of the eye. Contact lenses are worn directly on the surface of the eye. Intraocular lenses are surgically implanted most commonly after cataract removal, but recently for purely refractive purposes . Myopia