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  2. Laser ablation - Wikipedia

    en.wikipedia.org/wiki/Laser_ablation

    Laser ablation or photoablation (also called laser blasting [1] [2] [3]) is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates .

  3. Laser cutting - Wikipedia

    en.wikipedia.org/wiki/Laser_cutting

    Diagram of a laser cutter Laser cutting process on a sheet of steel CAD (top) and stainless steel laser-cut part (bottom) Laser cutting is a technology that uses a laser to vaporize materials, resulting in a cut edge. While typically used for industrial manufacturing applications, it is now used by schools, small businesses, architecture, and ...

  4. Smog tower - Wikipedia

    en.wikipedia.org/wiki/Smog_tower

    The H14 grade HEPA Filter, known for being able to clean up to 99.99% of the particulate matter, will be used instead, together with a pre-filter and activated carbon. [27] It is claimed the tower will filter air for up to 75,000 people within a 3-kilometre (1.9 mi) radius. [28] and cleaning more than 32 million cubic metres of air every day. [29]

  5. *This* Air Purifier Can Help Filter Wildfire Smoke—And Ships ...

    www.aol.com/adding-air-purifier-home-save...

    These doctor-recommended air purifiers remove dust, smoke, pollen, mold, smoke, and viruses to help with allergies, asthma, and COVID-19. Some deliver same-day.

  6. Particle counter - Wikipedia

    en.wikipedia.org/wiki/Particle_counter

    Laser optical particle counters employ five major systems: Lasers and optics: A laser operates on a single wavelength, so the light source is consistent with constant power output to illuminate the particle sampling region. Controlled flow: The viewing volume is a small chamber illuminated by the laser. The sample medium (air, liquid or gas) is ...

  7. Clean air delivery rate - Wikipedia

    en.wikipedia.org/wiki/Clean_Air_Delivery_Rate

    If a filtering unit uses a MERV 12 filter that removes roughly 40% of the smoke particles, then it may still obtain a smoke CADR of 80 by filtering 200 cubic feet per minute instead of 100 CFM. Conversely, a 99.97% HEPA filter (MERV 17) that removes over 99.9% of the smoke particles needs to filter 80 cubic feet per minute to get a CADR of 80.

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