Not all laser pens are safe for casual use. They are classified by their power output (measured in milliwatts, ): LASERPEN the LASER PEN
: Typically AAA or lithium-ion batteries that provide the electrical energy. lazer pen
Laser pens come in various colors, each with different properties: Not all laser pens are safe for casual use
The Laser Pen: From Presentation Tool to High-Tech Gadget A laser pen (or laser pointer) is a handheld, battery-powered device that uses a to emit a narrow, coherent beam of visible light. Originally designed as a specialized tool for teachers and presenters, these devices have evolved into ubiquitous gadgets used for everything from amateur astronomy to advanced material engraving. How Laser Pens Work Originally designed as a specialized tool for teachers
: A tiny semiconductor that converts electricity into light.
: Mirrors at either end of a small chamber bounce these photons back and forth, creating a chain reaction that intensifies the light.