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Based on the provided book review of Friction: A biography by Jennifer R. Vail, here are 3 key points detailing the overlooked significance of friction:
High-Tech Competitive Advantage: Friction plays a massive role in sports technology. In 2008, swimmers wearing a specific friction-reducing swimsuit broke 23 out of 25 world records at the Beijing Olympics. The suit reduced friction between the swimmer's body and the water so effectively that World Aquatics ultimately banned it in 2009 for giving athletes an unfair advantage.
A Massive Driver of Energy Consumption: Friction accounts for a staggering two-fifths (40%) of the energy used in manufacturing (either in the manufacturing process itself or in fighting unwanted friction). Furthermore, a 2011 study cited in the text noted that about one-third of a petrol tank in an average car is used purely to overcome friction.
The Scope of Tribology: Tribology—the study of friction, wear, and lubrication—spans from the microscopic to the cosmic. It explains everything from how geckos walk on walls and how ancient Egyptians moved heavy materials, to the mechanics of contact lenses, military jet engines, and even the behavior of dark matter near black holes.
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