Every now and then, one of my columns elicits enough reader response to merit a follow-up. Such is the case with a piece I wrote on green laser pointers (November 2013), in which I outlined their ...

On Friday, the Food and Drug Administration published new draft guidance that could effectively put an end to high-powered lasers in the United States. It will not be formally approved until the ...

For many years, one of the biggest stumbling blocks I faced at star parties was the confusion that arose whenever I tried to show attendees the locations of notable stars and constellations or the ...

Carolyn Trietsch recently defended her Ph.D. in entomology at Penn State. You can view her website or follow her on Twitter @carolyntrietsch. Laser pointers are perhaps the most abused visual aids in ...

Using a low-cost apparatus designed to quickly and accurately measure the properties of handheld laser devices, researchers tested 122 laser pointers and found that nearly 90 percent of green pointers ...

A lot of the DIY laser engravers and cutters we cover here on Hackaday are made with laser diodes salvaged from Blu-ray drives and projectors, which are visible lasers in the 400 – 450nm range ...