[Tomas] wanted to try building something mechanical with electronic control, and ended up with this sorter that organizes beads into one of two containers based on color. He built most of the ...

[Editor's note: this is the second installment in a relatively large project. The engineering challenge faced by these students was to create a talking color detector. I've elected to print the entire ...

I’m still not clear on exactly what’s legal when it comes to radar detectors, but if Cobra is sellin’ them, I can’t see anything wrong with buying them. And if you want an even bigger bang for your ...

An inexpensive detector developed by a NASA-led team can now see invisible infrared light in a range of "colors," or wavelengths. The detector, called a Quantum Well Infrared Photodetector (QWIP) ...

All three of the alternative white light sources produce what is considered near white, some are closer to true white light than others. Comparing the GaN diodes with the NUV and ZnSe it can be ...