Fresnel


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Fres·nel

(fres-nel'),
Augustin Jean, French physicist, 1788-1827. See: Fresnel lens, Fresnel prism.
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References in periodicals archive ?
In the observation plane is guaranteed an even number of Fresnel's zones, in order to obtain a null propagated field [U.sub.0] ([x.sub.1], [y.sub.1], z) = 0 on the optical axis.
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.
An alternative approach makes use of the changes in the refractive index of a thermoset resin that occur during the curing due to resin shrinkage, by measuring the Fresnel reflection at the end face of an optical fiber (6), (10), (11), (15-17), For a typical epoxy resin, refractive index shows an increase of 0.05 for a fully cross-linked resin (17).
Fresnel's suggestion that light possessed wave-like properties kept him firmly on the outside of received wisdom.
The tracking error of Fresnel reflectors could be affected by time, mirror exocentric structure, collector orientation, height of absorbers, axis position, solar altitude angle, and so on.
The Si[O.sub.2] nanopillars are useful for light extraction, since more surfaces of the nanopillars can provide more opportunities for light escaping and reduce Fresnel refraction because Si[O.sub.2] refractive index was lower than ITO as shown in Figure 6(b), but partial plane ITO of surface can cause Fresnel refraction.
"With their collaboration, and the use of linear Fresnel technology, we will be able to take significant steps towards achieving our goal of a 'solar Silicon Valley' at Karoshoek."
MATLAB does not provide functions for the direct evaluation of the Fresnel sine and cosine integrals that are the foundation of the generalized Filon method we study here.
Designed for permanent mounting, the Model LEDB-4 provides 360deg visibility with 18 integrated LEDs and impact-resistant Fresnel lens.