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Samsung Pay (stylized as SΛMSUNG Pay) is a mobile payment and digital wallet service, operated by the South Korean company Samsung Electronics.It lets users make payments using compatible smartphones and other Samsung-produced devices, accessed using the Samsung Wallet app.
A near-field magnetic induction (NFMI) communication system is a short range wireless physical layer that communicates by coupling a tight, low-power, non-propagating magnetic field between devices. The concept is for a transmitter coil in one device to modulate a magnetic field which is measured by means of a receiver coil in another device.
Carl Friedrich Gauß in 1828, aged 50 years old. The gauss (symbol: G, sometimes Gs) is a unit of measurement of magnetic induction, also known as magnetic flux density.The unit is part of the Gaussian system of units, which inherited it from the older centimetre–gram–second electromagnetic units (CGS-EMU) system.
The AC utility frequency of 50 or 60 hertz is often used, [5] or in the case of Qi-compliant devices, frequencies in the range of 87 to 205 kHz are typical. [ 6 ] High power inductive charging generally refers to inductive charging of batteries at power levels above 1 kilowatt.
The magnetocaloric effect can be quantified with the following equation: = ((,)) ((,)) where is the adiabatic change in temperature of the magnetic system around temperature T, H is the applied external magnetic field, C is the heat capacity of the working magnet (refrigerant) and M is the magnetization of the refrigerant.
A magnet or properly assembled array of magnets can be stably levitated against gravity when gyroscopically stabilized by spinning it in a toroidal field created by a base ring of magnet(s). However, this only works while the rate of precession is between both upper and lower critical thresholds—the region of stability is quite narrow both ...
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