This paper demonstrates an 18–40GHz four-arm planar log-periodic antenna with integrated wideband hybrid fabricated using printed circuit board (PCB) process. The two orthogonal linear polarizations ...

The precursors of heavy elements might arise in the plasma underbellies of swollen stars or in smoldering stellar corpses.

Answer: That would be magnesium. Magnesium gets extremely hot when it reacts with oxygen in the air. Magnesium has 2 ...

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Birefringent ring-banded spherulites with radial periodic variation of thicknesses were grown from poly(ε-caprolactone) (PCL) solutions under conditions for which the solution concentration was held ...

A simple and efficient numerical method for computing the transmission and reflection spectra of periodic arrays of cylinders is developed. For each unit cell containing a cylinder, only the wave ...