Abstract: In illumination systems, it is often necessary to get a structure that can have good performance on uniformity. Although light-emitting diodes (LEDs) are replacing conventional light sources ...

Traces of the city’s earliest beginnings as an economic and trading powerhouse lie just beneath the streets of South Street Seaport Over the past 250 years, perhaps no stretch of land in America has ...

Cross threading occurs when the bolt is misaligned with the threads in the nut. It can destroy the threads, or cause the nut to jam. The standard beveled end process makes cross threading a ...

Claudia Willen is a New York-based associate editor at Instyle. She has over five years of experience in writing, editing, and content strategy and previously held positions at Business Insider and ...