Unprotected lithium cells, high voltage, and blinding laser light. What can go wrong? It is fun to watch the testing, but we don’t want to build one. We’ll settle for our handheld pointer.

Laser pointers (sometimes known as laser pens) are compact, handheld laser devices. They are typically used to highlight an object or point of interest by illuminating it with a bright spot of colored ...

to hand-held laser pointers and flight-hardened weapons systems. There is, however, a limit to frequency conversion using nonlinear optics, because deep-ultraviolet absorption in the crystals ...

Most portable devices with dry batteries are allowed on planes in carry-on and checked luggage. But, if your laser pointer ...

The Philippines' recent claim regarding a "Chinese vessel hitting a Philippine Bureau of Fisheries and Aquatic Resources ...