Titlebook: Nonimaging Fresnel Lenses; Design and Performan Ralf Leutz,Akio Suzuki Book 2001 Springer-Verlag Berlin Heidelberg 2001 Dispersion.Fresnel

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Earlier Fresnel Lenses,Refraction occurs when a ray passes through surfaces separating materials with different indices of refraction. The contour of these surfaces define the focusing properties of the optical element. The bulk of material between the refracting surfaces has little effect on the optics of the lens.

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Solar Thermal Concentrator Systems,Nonimaging Fresnel lenses can only concentrate the direct fraction of solar radiation. Solar resource assessments are necessary to evaluate the suitability of locations for the installation of solar concentrating collectors and to estimate their potential for energy conversion.

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teaching ideas that readers can directly incorporate into thThis edited volume supports implementation of a critical literacy of popular culture for new times. It explores popular and media texts that are meaningful to youth and their lives. It questions how these texts position youth as literate so

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