Ion Temperature and Flow Velocity
... be electrically neutral over some scale-the Debye length-that is small compared to other characteristic length scales in the system. Hence any violations of charge neutrality are local rather than global [16]. In reality, the third condition is universally true of objects considered to be plasmas an ...
... be electrically neutral over some scale-the Debye length-that is small compared to other characteristic length scales in the system. Hence any violations of charge neutrality are local rather than global [16]. In reality, the third condition is universally true of objects considered to be plasmas an ...
The beryllium atom and beryllium positive ion in strong magnetic fields
... configurations we assume in the following that all paired electrons, like for example the 1s2 part of a configuration, are of course in a spin up and spin down orbital, respectively, whereas all unpaired electrons possess a negative projection of the spin onto the magnetic field direction. On a qual ...
... configurations we assume in the following that all paired electrons, like for example the 1s2 part of a configuration, are of course in a spin up and spin down orbital, respectively, whereas all unpaired electrons possess a negative projection of the spin onto the magnetic field direction. On a qual ...
DC GENERATOR CONSTRUCTION
... current is also small. Therefore, the magnetic field of the series field winding is weak, making Figure 10 Series-Wound DC Generator the generated voltage low. Conversely, if the load draws a large current, the excitation current is also high. Therefore, the magnetic field of the series field windin ...
... current is also small. Therefore, the magnetic field of the series field winding is weak, making Figure 10 Series-Wound DC Generator the generated voltage low. Conversely, if the load draws a large current, the excitation current is also high. Therefore, the magnetic field of the series field windin ...
The amonalous transport in plasmas
... developed at Universite Libre de Bruxelles. We investigated (with TURBO) two-dimensional turbulence produced into a box of 512 x 512 modes by taking ab initio the kinematical viscosity equals to the magnetic diffusivity. We solved the full MHD equations by choosing some different type of forcing. Th ...
... developed at Universite Libre de Bruxelles. We investigated (with TURBO) two-dimensional turbulence produced into a box of 512 x 512 modes by taking ab initio the kinematical viscosity equals to the magnetic diffusivity. We solved the full MHD equations by choosing some different type of forcing. Th ...
Flux emergence: flares and coronal mass ejections driven by dynamo action
... Helically shaped magnetic field structures known as coronal mass ejections (CMEs) are closely related to so-called eruptive flares. On the one hand, these events are broadly believed to be due to the buoyant rise of magnetic flux tubes from the bottom of the convection zone to the photosphere where ...
... Helically shaped magnetic field structures known as coronal mass ejections (CMEs) are closely related to so-called eruptive flares. On the one hand, these events are broadly believed to be due to the buoyant rise of magnetic flux tubes from the bottom of the convection zone to the photosphere where ...
Magnetic Resonance Technology A New Concept for
... liquid permittivity models, and updated slip models to mention a few. - Adequate interpretation of flow meter data typically requires knowledge of the flow models and closure correlations (i.e. slip models, permittivity mixture rules, etc.) applied. However, the models and assumptions are typically ...
... liquid permittivity models, and updated slip models to mention a few. - Adequate interpretation of flow meter data typically requires knowledge of the flow models and closure correlations (i.e. slip models, permittivity mixture rules, etc.) applied. However, the models and assumptions are typically ...
Electromagnet
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire that create the magnetic field. The wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material such as iron; the magnetic core concentrates the magnetic flux and makes a more powerful magnet.The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.Electromagnets are widely used as components of other electrical devices, such as motors, generators, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment. Electromagnets are also employed in industry for picking up and moving heavy iron objects such as scrap iron and steel.