Abstract: An equation for the on-axis gain of a uniformly illuminated rectangular aperture is derived which is valid in the "Optical Fresnel Zone." This equation is formulated in terms of the ordinary ...

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 ...

In a mesmerising blend of art and mathematics, a research student from University College London (UCL) has recently gained widespread attention for creating intricate images solely through ...

Sparc Technologies’ South Australian green hydrogen pilot plant is on track to commence construction in early 2025, following a formal commitment to Stage 2 of the project with industry partners, and ...

We have looked at how to solve equations with one unknown value, but what happens when there are two unknown values? An equation with two unknown values will have infinitely many solutions.

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 ...

A linear equation is drawn as a straight line on a set of axes. To draw the graph we need coordinates. We generate these coordinates by substituting values into the linear equation. STEP 1 - Draw ...

To address this issue, this article proposes a sector-modulated LFM (SM-LFM) signal for ISUDC. In terms of communication, it divides Fresnel domain into equal length sectors. Then, data is loaded by ...

A Yale study finds that the Earth’s ozone layer, crucial for life’s protection from UV radiation, was delayed in stabilizing by a battle between iodine and oxygen, hindering the emergence of complex ...

Optical lattices (OLs) with diverse transverse patterns and optical vortex lattices (OVLs) with special phase singularities have played important roles in the fields of atomic cooling, particle ...