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A laser pointer is a handheld device that emits a narrow, concentrated beam of light. Unlike a flashlight, its light is collimated, meaning it stays in a tight line over long distances rather than spreading out. Key Takeaways • Colors: Most commonly Red (standard), Green (extra bright for stargazing), and Blue/Violet (high energy). • Utility: Used primarily for presentations, astronomy, and construction leveling. • Science: Operates via stimulated emission, producing light waves that are perfect
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