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2. Electromagnetic shielding - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_shielding

   A laptop case with visible copper electromagnetic interference (EMI) coating shield on the inside. Such coatings are usually deposited by using electroless plating. It is applied both to home appliances and medical devices. [1] Typical materials used for electromagnetic shielding include thin layer of metal, sheet metal, metal screen, and metal ...

3. Samsung Galaxy A21s - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_A21s

   The Samsung Galaxy A21s has a four camera setup arranged in an "L" shape located in the corner with a rectangular protrusion similar to that of the iPhone 11 and the Pixel 4. The array consists of a 48 MP wide angle camera, an 8 MP ultrawide camera, a 2 MP macro camera , and a 2 MP depth sensor. [ 3 ]

4. Electromagnetic compatibility - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_compatibility

   Digital systems are inherently less susceptible than analogue systems, and also offer far easier ways (such as software) to implement highly sophisticated protection and error-correction measures. In 1985, the USA released the ISM bands for low-power mobile digital communications, leading to the development of Wi-Fi and remotely-operated car ...

5. Ferrite bead - Wikipedia

   en.wikipedia.org/wiki/Ferrite_bead

   The energy is either reflected back up the cable or dissipated as low-level heat. Only in extreme cases is the heat noticeable. A collection of snap-on/clamp-on ferrite beads. A ferrite bead can be added to an inductor to improve, in two ways, its ability to block unwanted high frequency noise. First, the ferrite concentrates the magnetic field ...

6. Wireless device radiation and health - Wikipedia

   en.wikipedia.org/wiki/Wireless_device_radiation...

   The HPA also says that due to the mobile phone's adaptive power ability, a DECT cordless phone's radiation could actually exceed the radiation of a mobile phone. The HPA explains that while the DECT cordless phone's radiation has an average output power of 10 mW, it is actually in the form of 100 bursts per second of 250 mW, a strength comparable to some mobile phones.

7. Talk:Samsung Galaxy A21s - Wikipedia

   en.wikipedia.org/wiki/Talk:Samsung_Galaxy_A21s

   Start a discussion about improving the Samsung Galaxy A21s page Talk pages are where people discuss how to make content on Wikipedia the best that it can be. You can use this page to start a discussion with others about how to improve the " Samsung Galaxy A21s " page.