Red phosphors have kept booming in white light emitting diodes (WLEDs) during the past years. Herein, a novel complex perovskite LaMg0.667Nb0.333O3:Mn4+,Bi3+ (LMN:Mn4+, Bi3+) deep-red phosphor was synthesized for the first...
The invention of complex numbers was essential in the rapid development of mathematics. Although most people consider complex numbers to be nonsensical notations, they are critical in technical disciplines. Human beings entered a wonderful realm when mathematicians began to investigate complex numbers. Our universe is amazing, full of beautiful discoveries, and even miraculous, according to complex analysis. We begin by giving a brief review of complex analysis' history, including when and how it originated. The root of a quadratic equation was used to find complex numbers. We look at some of the ways complex numbers are used in engineering domains like acoustic wave propagation. A thorough examination of certain key theorems of complex analysis is also included.
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