As a result, purple and magenta are known as "nonspectral" colors, because they don't really exist as actual electromagnetic ...

Abstract: In this paper, we propose a W-band 8-quadrature-amplitude-modulation (8QAM) frequency tripling photonic vector millimeter-wave (mm-wave) signal generation method by using a phase modulator ...

Because of current limitations on technology, an important assumption of the search for extraterrestrial intelligence is that ...