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Bookmate was created in 2007 by three former employees of the Russian edition of Look At Me - programmers Andrei Zotov and Egor Khmelev and designer Kirill Ten. In its first version, Bookmate was an aggregator and search engine for bookstores, offering the user the best price. In 2009, the creators relaunched it as a book reading app with ...
Archaeomagnetic dating is the study and interpretation of the signatures of the Earth's magnetic field at past times recorded in archaeological materials. These paleomagnetic signatures are fixed when ferromagnetic materials such as magnetite cool below the Curie point, freezing the magnetic moment of the material in the direction of the local magnetic field at that time.
Aeromagnetic survey. An aeromagnetic survey is a common type of geophysical survey carried out using a magnetometer aboard or towed behind an aircraft. The principle is similar to a magnetic survey carried out with a hand-held magnetometer, but allows much larger areas of the Earth's surface to be covered quickly for regional reconnaissance.
Newman's energy machine. Newman's Energy Machine was a DC motor which the inventor, Joseph Newman, claimed to produce mechanical power exceeding the electrical power being supplied to it. In 1979, Newman attempted to patent the device, but it was rejected by the United States Patent Office as being a perpetual motion machine. [1]
Electromagnetism. In electromagnetism, permeability is the measure of magnetization produced in a material in response to an applied magnetic field. Permeability is typically represented by the (italicized) Greek letter μ. It is the ratio of the magnetic induction to the magnetizing field as a function of the field in a material.
The vacuum magnetic permeability (variously vacuum permeability, permeability of free space, permeability of vacuum, magnetic constant) is the magnetic permeability in a classical vacuum. It is a physical constant, conventionally written as μ0 (pronounced "mu nought" or "mu zero"). It quantifies the strength of the magnetic field induced by an ...
IEEE Transactions on Magnetics. IEEE Trans. Magn. IEEE Transactions on Magnetics is a monthly peer-reviewed scientific journal that covers the basic physics of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The editor-in-chief is Amr Adly ( Cairo University, Egypt ).
Electromagnetic suspension ( EMS) is the magnetic levitation of an object achieved by constantly altering the strength of a magnetic field produced by electromagnets using a feedback loop. In most cases the levitation effect is mostly due to permanent magnets as they have no power dissipation, with electromagnets only used to stabilise the effect.
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