A simple experimental set-up comprised of a microfocus, tungsten anode, X-ray source, an image sensor, and the sample placed at tens of centimeters from the detector is used to measure Fresnel ...

We then derive a closed-form Fresnel-based uniform asymptotic solution for cases where the beam hits arbitrarily near the edge, thus exciting strong diffraction ... The numerical examples also ...

Fresnel diffraction is a phenomenon that occurs when waves encounter obstacles or apertures, leading to the bending and spreading of waves. This concept is crucial in various fields, including ...

Multiferroic materials, in which electric and magnetic properties are combined in promising ways, will be the heart of new ...

A research team at POSTECH has developed a novel multidimensional sampling theory to overcome the limitations of flat optics.

The spatial correlation length of density irregularities and the Fresnel radius of radio diffraction are two key parameters in determining the scintillation pattern. Such a scintillation pattern can ...

NASA’s troubled Mars Sample Return program is stuck at a crossroads—and is likely to remain in limbo until at least 2026—agency officials said at a press briefing on Tuesday. To bring this ...

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A fresnel light (pronounced frəˈnel) has a stairsteped lens that varies the spread of the beam. Frenel is named after Augustin-Jean Fresnel, who invented it for use in lighthouses. Focusing a fresnel ...