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2. Water filter - Wikipedia

   en.wikipedia.org/wiki/Water_filter

   A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools .

3. Refrigerator - Wikipedia

   en.wikipedia.org/wiki/Refrigerator

   A refrigerator maintains a temperature a few degrees above the freezing point of water. The optimal temperature range for perishable food storage is 3 to 5 °C (37 to 41 °F). [3] A freezer is a specialized refrigerator, or portion of a refrigerator, that maintains its contents’ temperature below the freezing point of water. [4]

4. Reverse osmosis - Wikipedia

   en.wikipedia.org/wiki/Reverse_osmosis

   Reverse osmosis ( RO) is a water purification process that uses a semi-permeable membrane to separate water molecules from other substances. RO applies pressure to overcome osmotic pressure that favors even distributions. RO can remove dissolved or suspended chemical species as well as biological substances (principally bacteria ), and is used ...

5. The right and wrong ways to run apps without dock icons

   www.engadget.com/2011-03-13-the-right-and-wrong...

   The solution was simple: delete the app and re-download a clean copy from the Mac App Store. (Running Dockless again to "undo" the change was not enough in my experience.) Just for the sake of ...

6. Absorption refrigerator - Wikipedia

   en.wikipedia.org/wiki/Absorption_refrigerator

   An absorption refrigerator is a refrigerator that uses a heat source to provide the energy needed to drive the cooling process. Solar energy, burning a fossil fuel, waste heat from factories, and district heating systems are examples of convenient heat sources that can be used. An absorption refrigerator uses two coolants: the first coolant ...

7. This gaming phone has a built-in cooling fan and can record ...

   www.engadget.com/2019-04-28-nubia-red-magic-3...

   As for cameras, the Red Magic 3 comes with a 48-megapixel f/1.7 main imager powered by a Sony IMX586 sensor, along with a 16-megapixel f/2.0 front camera but with an unknown sensor. Sadly, there's ...