A broken lightbulb is easy to remove, but you do need to know what you're doing. Here's how to do this task yourself safely.

WASHINGTON D.C. The ups and downs of Mr. Thomas A. Edison's inventions related to electrical lighting continue. After his U.S. Patent No. 223,898 for an "Electric Lamp" was found to be valid in the ...

Way back when [Ms Ellsworth] was a kid, she kept seeing the same circuit over and over again in her various op-amp books. It was a Wien bridge oscillator, a small circuit that outputs a sine wave with ...

Cables made of carbon nanotubes are inching toward electrical conductivities seen in metal wires, and that may light up interest among a range of industries. Cables made of carbon nanotubes are ...

TESS, a Taiwanese manufacturing company, recently introduced a 7W LED bulb that, at 560 lumens, can serve as a replacement for a typical 500-lumen, 40W incandescent bulb (Figure 1). TESS has received ...