However, ironically for him, he is alarmed that many green laser pointers are more powerful than they are supposed to be. Sure, you often want a powerful laser, but if you think a laser is safe ...

However, ironically for him, he is alarmed that many green laser pointers are more powerful than they are supposed to be. Sure, you often want a powerful laser, but if you think a laser is safe ...

As part of their ongoing "What If?" series, Randall Munroe of xkcd and Henry Reich of MinutePhysics looked at what might ...

The brilliant Green laser pointer is powerful and easy to see, even on LCD and Plasma displays and in brightly lit rooms. The LCD display with timer lets you manage your time with silent ...

Getty/southerlycourse Laser pen beams can travel many kilometres Less powerful laser pointers can cause temporary blurring of vision but are very unlikely to directly cause serious injury.