By combining their knowledge of pyroelectricity with their understanding of crystal structures and behavior, the Curie brothers demonstrated the first piezoelectric effect by using crystals of tourmaline, quartz, topaz, cane sugar, and Rochelle salt. The direct piezoelectric effect was first seen in 1880, and was initiated by the brothers Pierre and Jacques Curie. The piezoelectric effect also has its use in more mundane applications as well, such as acting as the ignition source for cigarette lighters. It is also the basis of a number of scientific instrumental techniques with atomic resolution, such as scanning probe microscopes (STM, AFM, etc). The piezoelectric effect is very useful within many applications that involve the production and detection of sound, generation of high voltages, electronic frequency generation, microbalances, and ultra fine focusing of optical assemblies. When reversed, an outer electrical field either stretches or compresses the piezoelectric material. When piezoelectric material is placed under mechanical stress, a shifting of the positive and negative charge centers in the material takes place, which then results in an external electrical field. One of the unique characteristics of the piezoelectric effect is that it is reversible, meaning that materials exhibiting the direct piezoelectric effect (the generation of electricity when stress is applied) also exhibit the converse piezoelectric effect (the generation of stress when an electric field is applied). The word Piezoelectric is derived from the Greek piezein, which means to squeeze or press, and piezo, which is Greek for “push”. The Topaz is an indestructible boot that will last you multiple seasons.Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress. Paired with OCTO Edge wheels and WICKED ABEC 9 freespin bearings the Topaz takes your game to a new level at an incredible price. Unlike ordinary derby skates the Topaz features our DCM 2-point mounting system allowing you to adjust the position of your plate front to back and from side to side, in order to truly suit your skating style and optimize your performance. Featuring a 45 degree strap with a 'from the box fit' means less time breaking in and more time focusing on your game. The boot is loved for its low cut look and feel that ensures increased freedom of ankle movement. The flex cut shell and pain free technology paired with high end padding materials offers unparalleled fit and performance. The low-cut boot features an extremely durable, responsive and lightweight composite heat moldable shell (carbon free). The Chaya Topaz is a high performance package at an unbelievable price. The Chaya Topaz - This is no ordinary derby skate! Interest Free Finance (6 Months) on most orders where the goods total is £280.00 or more.Interest Free Finance (10 Months) on most orders where the goods total is £350.00 or more.Interest Free Finance (12 Months) on most orders where the goods total is £600.00 or more.Interest Free Finance (18 Months) on most orders where the goods total is £600.00 or more.Interest Free Finance (24 Months) on most orders where the goods total is £800.00 or more.Interest Free Finance (36 Months) on most orders where the goods total is £800.00 or more.Classic Credit 9 months 4.9% on most orders where the goods total is £350.00 or more.Classic Credit 12 months 4.9% on most orders where the goods total is £350.00 or more.Classic Credit 18 months 4.9% on most orders where the goods total is £350.00 or more. ![]() ![]() Classic Credit 24 Months 4.9% on most orders where the goods total is £350.00 or more.Classic Credit 36 Months 4.9% on most orders where the goods total is £350.00 or more.Classic Credit 12 Months 15.9% on most orders where the goods total is £280.00 or more.Classic Credit 24 Months 15.9% on most orders where the goods total is £280.00 or more.Classic Credit 36 Months 15.9% on most orders where the goods total is £280.00 or more.Classic Credit 48 Months 15.9% on most orders where the goods total is £280.00 or more.
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