You may know in what situations the NEC requires you to install a ground-fault circuit interrupter (GFCI), but do you know how it works? A GFCI is specifically ...

Tick tracer. Glow meter. Sniffer. They go by many names, but capacitive voltage sensors are all designed to do one thing: detect the presence of voltage in a wire or piece of equipment without ...

Discover how to build a simple wireless power transfer system at home using readily available components like enameled copper wire, an LED, a 2N2222A transistor, and a 9V battery. This step-by-step ...

Abstract: The rise of the Internet of Things demands flexible, biocompatible, and cost-effective devices. Printed electronics provide a solution through low-cost and on-demand additive manufacturing ...

Trachoma, an infectious eye disease and once a leading cause of blindness, is declining worldwide. Explore how it spreads, its long history, and how global efforts are working to end it.