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  2. 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 ]

  3. 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 ...

  4. 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 ...

  5. 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 ...

  6. Samsung GT-E1200 - Wikipedia

    en.wikipedia.org/wiki/Samsung_GT-E1200

    The Samsung E1200 (also known as Samsung Pusha and Samsung Keystone 2) is a mobile phone made by Samsung.This phone was released in Oct 17,2011 through Tesco in the UK. It was discontinued in 2015 when the Samsung Guru FM E1202 was released as its successor.

  7. Van Allen radiation belt - Wikipedia

    en.wikipedia.org/wiki/Van_Allen_radiation_belt

    Laboratory simulation of the Van Allen belt's influence on the Solar Wind; these aurora-like Birkeland currents were created by the scientist Kristian Birkeland in his terrella, a magnetized anode globe in an evacuated chamber. The outer belt consists mainly of high-energy (0.1–10 MeV) electrons trapped by the Earth's magnetosphere. It is ...

  8. God helmet - Wikipedia

    en.wikipedia.org/wiki/God_helmet

    The God Helmet was not specifically designed to elicit visions of God, [1] but to test several of Persinger's hypotheses about brain function. The first of these is the Vectorial Hemisphericity Hypothesis, [20] which proposes that the human sense of self has two components, one on each side of the brain, that ordinarily work together but in which the left hemisphere is usually dominant.

  9. South Atlantic Anomaly - Wikipedia

    en.wikipedia.org/wiki/South_Atlantic_Anomaly

    The South Atlantic Anomaly (SAA) is an area where Earth's inner Van Allen radiation belt comes closest to Earth's surface, dipping down to an altitude of 200 kilometres (120 mi). This leads to an increased flux of energetic particles in this region and exposes orbiting satellites (including the ISS ) to higher-than-usual levels of ionizing ...

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