What is Laser pointer?
[[File:Laser Pointer.jpg|thumb|Red (635&nbsp;nm), green (520&nbsp;nm) and blue (445&nbsp;nm) laser pointers]] A '''laser pointer''' (or '''laser pen''') is a small [[device]] that shines a low-powered [[laser]] light. The pointer is usually powered by a [[battery]]. It contains a laser [[diode]] that emits a very narrow laser beam of [[visible light]]. When pointed at an object, it shines a small bright spot of colored light. The pointer is held in a hand. It is used to highlight something of interest. Power is restricted in most jurisdictions not to exceed 5 [[milliwatt]]s. [[Category:Light]] [[Category:Machines]] {{stub}}