The technique for calculating the basic geometric parameters of an LED lighting device is considered. The developed design allows to calculate the optimum parameters of the lighting device ensuring an even distribution of illumination with minimal energy consumption
Keywords: Illumination, LED lighting, surface contour, light distribution, surface plane, fluorescent lamps, lighting system, сartesian system, plane
Bbiomechanical parameters of the competitive exercise «bench» during the All-Russian competitions (Cup of Russia, Sochi 2011) were revealed in powerlifting athletes of various qualifications with motor disorder. Comparative analysis showed that there are significant differences between athletes of high, medium and low skills.
Keywords: Powerlifting, sports techniques, sportsmen of different qualifications with motor disorder