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2. Laser engraving - Wikipedia

   en.wikipedia.org/wiki/Laser_engraving

   Laser engraving metal plates are manufactured with a finely polished metal, coated with an enamel paint made to be "burned off". At levels of 10 to 30 watts, excellent engravings are made as the enamel is removed quite cleanly. Much laser engraving is sold as exposed brass or silver-coated steel lettering on a black or dark-enamelled background.

3. List of laser types - Wikipedia

   en.wikipedia.org/wiki/List_of_laser_types

   Laser types with distinct laser lines are shown above the wavelength bar, while below are shown lasers that can emit in a wavelength range. The height of the lines and bars gives an indication of the maximal power/pulse energy commercially available, while the color codifies the type of laser material (see the figure description for details).

4. Laser cutting - Wikipedia

   en.wikipedia.org/wiki/Laser_cutting

   The CO 2 laser is suited for cutting, boring, and engraving. The neodymium (Nd) and neodymium yttrium-aluminium-garnet lasers are identical in style and differ only in the application. Nd is used for boring and where high energy but low repetition are required. The Nd:YAG laser is used where very high power is needed and for boring and engraving.

5. 6 Best Cold Laser Therapy Devices to Use at Home

   www.aol.com/lifestyle/6-best-cold-laser-therapy...

   Infrared & Red Light Therapy. As LifePro's cold laser therapy device proves, big things come in small packages and budgets.This gadget can easily hit in your desk drawer, but it certainly packs a ...

6. Carbon-dioxide laser - Wikipedia

   en.wikipedia.org/wiki/Carbon-dioxide_laser

   The most basic form of a CO 2 laser consists of a gas discharge (with a mix close to that specified above) with a total reflector at one end, and an output coupler (a partially reflecting mirror) at the output end. [4] The CO 2 laser can be constructed to have continuous wave (CW) powers between milliwatts (mW) and hundreds of kilowatts (kW). [5]

7. These Are the Best New Songs We Heard This Month - AOL

   www.aol.com/best-songs-heard-month-142900895.html

   “Rebecca Black, perhaps best known for the 2011 viral hit ‘Friday,’ is still making music, however now the playground isn’t at the school—it’s at the club. In ‘Sugar Water Cyanide ...