FOCUSING IN THE HOUGHTON COLLEGE CYCLOTRON By Sylvia I. Morrow
... that occur with the linac which must be longer and longer to reach higher energies while still using lower voltages. Like early accelerator designs, the cyclotron has only two electrodes; however, using radio-frequency (RF) voltages and magnetic fields, Lawrence designed the cyclotron so that the io ...
... that occur with the linac which must be longer and longer to reach higher energies while still using lower voltages. Like early accelerator designs, the cyclotron has only two electrodes; however, using radio-frequency (RF) voltages and magnetic fields, Lawrence designed the cyclotron so that the io ...
C W The Maxwell Centre
... phenomena at the atomic level. Using quantum mechanics enables different properties of a material to be determined in a computer, allowing researchers to peer inside a figurative Schrödinger’s box. The software is based on density functional theory, which is used to describe the systems of electrons ...
... phenomena at the atomic level. Using quantum mechanics enables different properties of a material to be determined in a computer, allowing researchers to peer inside a figurative Schrödinger’s box. The software is based on density functional theory, which is used to describe the systems of electrons ...
Modelling the solar wind interaction with Mercury by a quasi
... the Hermean plasma environment has not yet been analysed by a global quasi-neutral hybrid model. In this paper we present a new quasi-neutral hybrid model developed to study various processes associated with the Mercury-solar wind interaction. Emphasis is placed on addressing advantages and disadvan ...
... the Hermean plasma environment has not yet been analysed by a global quasi-neutral hybrid model. In this paper we present a new quasi-neutral hybrid model developed to study various processes associated with the Mercury-solar wind interaction. Emphasis is placed on addressing advantages and disadvan ...
Observations of concentrated generator regions in the nightside
... between FAST and Cluster during our event. The conjunctions between the satellites occur at 22:23 UT (19 September 2001) and 00:29 UT (20 September 2001). In Fig. 2 the trajectories of Cluster S/C 1 (green) and the Fast satellite (red), mapped to an altitude of 110 km are shown. Since the ionospheri ...
... between FAST and Cluster during our event. The conjunctions between the satellites occur at 22:23 UT (19 September 2001) and 00:29 UT (20 September 2001). In Fig. 2 the trajectories of Cluster S/C 1 (green) and the Fast satellite (red), mapped to an altitude of 110 km are shown. Since the ionospheri ...
large-amplitude, pair-creating oscillations in pulsar and
... In steady state models jk ¼ j0 is implicit at all times, so that @Ek /@t ¼ 0. Equation (6) is then solved together with the equation of motion for the accelerating pairs, and some prescription for pair creation is adopted. In most cases it has been shown that for reasonable pair multiplicities (numb ...
... In steady state models jk ¼ j0 is implicit at all times, so that @Ek /@t ¼ 0. Equation (6) is then solved together with the equation of motion for the accelerating pairs, and some prescription for pair creation is adopted. In most cases it has been shown that for reasonable pair multiplicities (numb ...
Spin, or actually: Spin and Quantum Statistics∗
... on the underlying theory, general relativity, along with a photograph of its creator, Albert Einstein, would make it onto the front pages of major daily newspapers, as it did in 1919. This development is, of course, not entirely accidental, and I could easily present a list of reasons for it. But le ...
... on the underlying theory, general relativity, along with a photograph of its creator, Albert Einstein, would make it onto the front pages of major daily newspapers, as it did in 1919. This development is, of course, not entirely accidental, and I could easily present a list of reasons for it. But le ...
Presentation Material Problems
... and B. Unfortunately they are coupled (that is, E depends on B and B depends on E). To solve these types of equations we need to decouple them – to get an equation that only has E in is, and another that only has B in it. To do this, take an x-derivative of one of your equations and a time derivati ...
... and B. Unfortunately they are coupled (that is, E depends on B and B depends on E). To solve these types of equations we need to decouple them – to get an equation that only has E in is, and another that only has B in it. To do this, take an x-derivative of one of your equations and a time derivati ...
37 Electromagnetic Induction
... If you push a magnet into a coil connected to a resistor you’ll feel a resistance to your push. For the same pushing speed, why is this resistance greater in a coil with more loops? Answer: More work is required because more voltage is induced, producing more current in the resistor and more energy ...
... If you push a magnet into a coil connected to a resistor you’ll feel a resistance to your push. For the same pushing speed, why is this resistance greater in a coil with more loops? Answer: More work is required because more voltage is induced, producing more current in the resistor and more energy ...
37 Electromagnetic Induction
... If you push a magnet into a coil connected to a resistor you’ll feel a resistance to your push. For the same pushing speed, why is this resistance greater in a coil with more loops? Answer: More work is required because more voltage is induced, producing more current in the resistor and more energy ...
... If you push a magnet into a coil connected to a resistor you’ll feel a resistance to your push. For the same pushing speed, why is this resistance greater in a coil with more loops? Answer: More work is required because more voltage is induced, producing more current in the resistor and more energy ...
ElectricityRocks
... pump will be used to illustrate the flow of electricity in a close circuit. The water is moved when the pump is pulled upwards. The pressure applied during this upward stroke is analogous to the voltage in an electric circuit, and the speed of the flowing water is similar to the current. If more for ...
... pump will be used to illustrate the flow of electricity in a close circuit. The water is moved when the pump is pulled upwards. The pressure applied during this upward stroke is analogous to the voltage in an electric circuit, and the speed of the flowing water is similar to the current. If more for ...
Magnetism can produce electric current, and electric current can
... If you push a magnet into a coil connected to a resistor you’ll feel a resistance to your push. For the same pushing speed, why is this resistance greater in a coil with more loops? Answer: More work is required because more voltage is induced, producing more current in the resistor and more energy ...
... If you push a magnet into a coil connected to a resistor you’ll feel a resistance to your push. For the same pushing speed, why is this resistance greater in a coil with more loops? Answer: More work is required because more voltage is induced, producing more current in the resistor and more energy ...
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.