The carbon arc lamp stayed around for a surprising amount of time. Manufacturers didn’t stop making them until the 1980s, and there are still a few theaters where you can find old projectors.

Well, I did everything in my power to stop it from happening. All my neighbors put their snowblowers and shovels away, people pulled out their driveway stakes, and even my own wife took her hat and… ...

Marked: "Wallace's patent December 18, 1877." Also, "92" stamped and etched on lamp. Carbon arc with 2 carbon plates. Regulator mounted on top. Location Currently not on view Credit Line from William ...

You’ve never seen speakers like these. Instead of a traditional speaker diaphragm, plasma arc speakers use a modified carbon arc lamp to produce sound. The best part? You can build them yourself ...

The Carbon Arc The glow is created by two carbon rods that, when heated, form an arc of light between them. In the 1920s, when klieg lights were first used on film sets, the rods burned so ...

The carbon products division of Union Carbide Corp. became the independent UCAR Carbon Company in 1995, and was renamed GrafTech International Holdings in 2002. Electricity was mostly a lab curiosity ...

This article was originally published with the title “ The Hazeltine Arc Lamp Carbon Shield ” in SA Supplements Vol. 30 No. 782supp (December 1890), p. 12495 doi:10.1038 ...

How to Build Plasma Arc Speakers You’ve never seen speakers like these. Instead of a traditional speaker diaphragm, plasma arc speakers use a modified carbon arc lamp to produce sound.