Fresnel


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Fres·nel

(fres-nel'),
Augustin Jean, French physicist, 1788-1827. See: Fresnel lens, Fresnel prism.
References in periodicals archive ?
For a faster break down, the lights' cool-to-the-touch operation means that users will not have to wait for them to cool off, unlike traditional Fresnel lighting.
Another more customizable solution consists of two PIR sensors with different Fresnel lenses (as shown in Figure 1).
Spinella explained the history of Fresnel lenses, which can be traced back to France.
The number of Fresnel zones is a postulated by the French physicist Augustin-Jean Fresnel.
Fresnel will be responsible for supervising and leading the academic content of the group and providing overall strategic and operational leadership to Sommet Education, ensuring that Glion Institute of Higher Education and Les Roches Global Hospitality Education always deliver against the highest educational standards.
In this study we report on the cure monitoring of an epoxy resin suitable for liquid composite processes, by using simultaneously u multi-instrumentation based on an OFS (a Fresnel refractometer) and DEA.
In turning this theory into reality Fresnel challenged not only the status quo in lighthouse operations; he grounded his approach within the contemporaneous debates then raging within scientific circles about the nature of light.
Having the same radiating aperture, the directivity of a Fresnel reflector is lower than a parabolic reflector.
Under the condition of the modified first-order Born approximation and in the Fresnel diffraction region, Equation (8) can be expressed as
En el 2000, Vills y Vorrison (2000), con ayuda de un modelo de trazado de rayos generaron los mapas de coleccion de un nuevo concepto de colector llamado "concentrador lineal de Fresnel compacto"; este diseno permite maximizar el area de cobertura del concentrador obteniendo arreglos mas densos y libres de sombreados o bloqueos entre espejos.
The company is building two plants using compact linear fresnel reflector technology that will produce 250 megawatts of electricity in Rajasthan, north-western India.