Recent content by wildcatherder

By the way, how do spark cameras work?

When I worked on a project to put Remote Terminal Units in remote areas of Alaska, the specifications required a stainless steel box for the equipment. (Apparently, in remote areas, people will shoot at anything.) When the equipment arrived, the local engineer called and asked if the radio...

That is correct. The more expensive, passive stereoscopic glasses use circular polarization. With simple, plane polarization, tilting one's head will immediately disrupt the stereo effect. Circularly polarized light does reverse the sense of polarization upon reflection.