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2. Laser pointer - Wikipedia

   en.wikipedia.org/wiki/Laser_pointer

   Laser pointer. Red (635 nm), blueish violet (445 nm), and green (520 nm) laser pointers. A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot.

3. Blue laser - Wikipedia

   en.wikipedia.org/wiki/Blue_laser

   A blue laser emits electromagnetic radiation with a wavelength between 400 and 500 nanometers, which the human eye sees in the visible spectrum as blue or violet. [1] Blue lasers can be produced by: direct, inorganic diode semiconductor lasers based on quantum wells of gallium (III) nitride at 380-417nm [2] [3] or indium gallium nitride at 450 ...

4. The 10 Best Laser Hair Removal Devices to Shop on Amazon - AOL

   www.aol.com/lifestyle/10-best-laser-hair-removal...

   Peach 2 IPL. Just like the majority of Foreo's buzzy devices, this IPL hair removal tool is extremely high-tech—it even comes with its own app. The tool uses up to 120 flashes per minute and T ...

5. 40 Gifts Under $50 Any and All Dads Will Love - AOL

   www.aol.com/lifestyle/40-gifts-under-50-dads...

   Classic Sport Fountain Pen We know he's probably got a collection of free bank pens, but there's something about a sleek, gold-plated pen that just makes writing all the more fun.

6. Laser - Wikipedia

   en.wikipedia.org/wiki/Laser

   The word laser is an anacronym that originated as an acronym for light amplification by stimulated emission of radiation. [1] [2] The first laser was built in 1960 by Theodore Maiman at Hughes Research Laboratories, based on theoretical work by Charles H. Townes and Arthur Leonard Schawlow.

7. Here Are Useful Father's Day Gift Ideas for Grandpa ... - AOL

   www.aol.com/useful-fathers-day-gift-ideas...

   2-in-1 Multi-Tool Pen Set From screw driver to LED light capabilities, this multi-tool gadget will help grandpa tackle tasks without lugging around his tool box.