منابع مشابه
Aerodynamic drag of modern soccer balls
Soccer balls such as the Adidas Roteiro that have been used in soccer tournaments thus far had 32 pentagonal and hexagonal panels. Recently, the Adidas Teamgeist II and Adidas Jabulani, respectively having 14 and 8 panels, have been used at tournaments; the aerodynamic characteristics of these balls have not yet been verified. Now, the Adidas Tango 12, having 32 panels, has been developed for u...
متن کاملThe Topology and Combinatorics of Soccer Balls
W the arrival of the quadrennial soccer World Cup this summer, more than a billion people around the world are finding their television and computer screens filled with depictions of soccer halls. In Germany, where the World Cup matches are being played, soccer balls are tuming up on all kinds of merchandise, much of it having nothing to do with soccer. Although a soccer ball can be put togethe...
متن کاملThe strange flight behaviour of slowly spinning soccer balls
The strange three-dimensional flight behaviour of slowly spinning soccer balls is one of the most interesting and unknown phenomenon associated with the trajectories of sports balls. Many spectators have experienced numerous exciting and emotional instances while observing the curious flight behaviour of these balls. We examine the aerodynamic mechanisms of erratic ball behaviours through real ...
متن کاملHow Factors of the Interpretive Structural Model Affect the Intent to Buy Original Brand Soccer Balls?
Background. A soccer ball is the principal piece of sports equipment for soccer and original brands compete with each other for a big pie of the market. Objectives. The aim of this study’s interpretive structural model (ISM) was to ascertain the factors that affect the intent to purchase original brand soccer balls. Methods. First, by a study of the literature and by the use of the Delp...
متن کاملBuilding microscopic soccer balls with evaporating colloidal fakir drops.
Evaporation-driven particle self-assembly can be used to generate three-dimensional microstructures. We present a unique method to create colloidal microstructures in which we can control the amount of particles and their packing fraction. To this end, we evaporate colloidal dispersion droplets on a special type of superhydrophobic microstructured surface, on which the droplet remains in Cassie...
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ژورنال
عنوان ژورنال: Procedia Engineering
سال: 2010
ISSN: 1877-7058
DOI: 10.1016/j.proeng.2010.04.018