3D Modeling of Electromagnetic-Thermal Phenomena in Induction
... required temperature distribution along cylinder surface. The accuracy of this temperature is one of the most important factors in industrial application concerned. The semi industrial set up of such a heating system has been developed in Computer Engineering Department TUL and research on the preci ...
... required temperature distribution along cylinder surface. The accuracy of this temperature is one of the most important factors in industrial application concerned. The semi industrial set up of such a heating system has been developed in Computer Engineering Department TUL and research on the preci ...
Electronicsound
... (a) When there is no relative motion between the coil of wire and the bar magnet, there is no current in the coil. (b) A current is created in the coil when the magnet moves toward the coil. (c) A current also exists when the magnet moves away from the coil, but the direction of the current is oppos ...
... (a) When there is no relative motion between the coil of wire and the bar magnet, there is no current in the coil. (b) A current is created in the coil when the magnet moves toward the coil. (c) A current also exists when the magnet moves away from the coil, but the direction of the current is oppos ...
BAND GAP DETERMINATION
... Probes arrangement (it should have four probes, coated with zinc at the tips). The probes should be equally spaced and must be in good electrical contact with the sample), Sample (Germanium or silicon crystal chip with non-conducting base), Oven (for the variation of temperature of the crystal from ...
... Probes arrangement (it should have four probes, coated with zinc at the tips). The probes should be equally spaced and must be in good electrical contact with the sample), Sample (Germanium or silicon crystal chip with non-conducting base), Oven (for the variation of temperature of the crystal from ...
Discovering Electricity
... current and vice versa. His theory became known as Ohm’s Law. The international standard unit for electric resistance, the ohm, was named after him. ...
... current and vice versa. His theory became known as Ohm’s Law. The international standard unit for electric resistance, the ohm, was named after him. ...
Electrodynamics and Relativity
... It is then possible to show that there has to be such a thing as magnetism. Consider a string of positive charges moving to the right with velocity v and negative charges moving to the left with velocity v: ...
... It is then possible to show that there has to be such a thing as magnetism. Consider a string of positive charges moving to the right with velocity v and negative charges moving to the left with velocity v: ...
Principle of Formation of Magnetic Field of Iron
... nucleuses of the nearby atoms, but not between them. As orbital protons of atom have the left direction of rotation, and orbital electrons have the right direction of rotation, their magnetic fields are directed counter, but due to that that the strength of magnetic field of protons is much more tha ...
... nucleuses of the nearby atoms, but not between them. As orbital protons of atom have the left direction of rotation, and orbital electrons have the right direction of rotation, their magnetic fields are directed counter, but due to that that the strength of magnetic field of protons is much more tha ...
Problem sets
... (c) the number of phonons and the energy associated with the mode at 50 and 300 K respectively. 5. Consider a dielectric crystal made up of layers of atoms, with rigid coupling between layers so that the motion of the atoms is restricted to the plane of the layer. Show that the phonon heat capacity ...
... (c) the number of phonons and the energy associated with the mode at 50 and 300 K respectively. 5. Consider a dielectric crystal made up of layers of atoms, with rigid coupling between layers so that the motion of the atoms is restricted to the plane of the layer. Show that the phonon heat capacity ...
Document
... Determinants may make a solution easier to obtain, but the solution obtained is still unwieldy. Here, mathematicians have come to the rescue. The have defined a vector operator known as the “del” which is equal to (/x)i + (/y)j + (/z)k and is drawn as an upside down triangle . Using it, we ca ...
... Determinants may make a solution easier to obtain, but the solution obtained is still unwieldy. Here, mathematicians have come to the rescue. The have defined a vector operator known as the “del” which is equal to (/x)i + (/y)j + (/z)k and is drawn as an upside down triangle . Using it, we ca ...
the rationalized giorgi systemwith absolute volt and ampere
... Various systems of electrical units are in use today, these having been introduced in the course of the development of the theory or practical application of electricity in various fields. By an efficient combination of the conventional units the rationalized Giorgi system with absolute volt and amp ...
... Various systems of electrical units are in use today, these having been introduced in the course of the development of the theory or practical application of electricity in various fields. By an efficient combination of the conventional units the rationalized Giorgi system with absolute volt and amp ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.