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Electricity and Magnetism
Electricity and Magnetism

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Using Molecules to Measure Nuclear Spin

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... observable in an electrically conductive melt flow under the influence of a stationary magnetic field: • The flow speed profile is modified; • Turbulent flows are laminarized. What is striking about such effects and their impacts on flow is they can be turned on and off and even controlled by an ext ...
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Common Themes and Variations in Animal Orientation Systems1

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50 Years after Albert Einstein: The Failure of the

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Electric Power Acquisition from the Vibration of an Electric Vehicle

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Obtaining Global Mode Structures From the Local

ElectricityRocks
ElectricityRocks

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Magnetism



Magnetism is a class of physical phenomena that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Every material is influenced to some extent by a magnetic field. The most familiar effect is on permanent magnets, which have persistent magnetic moments caused by ferromagnetism. Most materials do not have permanent moments. Some are attracted to a magnetic field (paramagnetism); others are repulsed by a magnetic field (diamagnetism); others have a more complex relationship with an applied magnetic field (spin glass behavior and antiferromagnetism). Substances that are negligibly affected by magnetic fields are known as non-magnetic substances. These include copper, aluminium, gases, and plastic. Pure oxygen exhibits magnetic properties when cooled to a liquid state.The magnetic state (or magnetic phase) of a material depends on temperature and other variables such as pressure and the applied magnetic field. A material may exhibit more than one form of magnetism as these variables change.
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