Solar cycle dependence of quiet-time magnetospheric currents
... storm times from our study. Data were selected from periods when the magnetic activity index, am , was less than 15 (K p < 3) and the previous 3-hour interval had am < 18. Rapid variations of magnetospheric currents on time scales of the orbital period (1.5 h) are excluded from such a dataset. Furth ...
... storm times from our study. Data were selected from periods when the magnetic activity index, am , was less than 15 (K p < 3) and the previous 3-hour interval had am < 18. Rapid variations of magnetospheric currents on time scales of the orbital period (1.5 h) are excluded from such a dataset. Furth ...
Electric Circuits
... one terminal to another. There is a potential difference (voltage) between these poles. The maximum potential difference a power source can have is called the electromotive force or (EMF), e. The term isn't actually a force, simply the amount of energy per charge (J/C or V) ...
... one terminal to another. There is a potential difference (voltage) between these poles. The maximum potential difference a power source can have is called the electromotive force or (EMF), e. The term isn't actually a force, simply the amount of energy per charge (J/C or V) ...
History of Magnetism and Electricity
... discharging itself in a single spark or shock. Volta showed that electricity could be made to travel from one place to another by wire, thereby making an important contribution to the science of electricity. 1820 - Electromagnetism, Current In 1820, a physicist Hans Christian Oersted, learned that a ...
... discharging itself in a single spark or shock. Volta showed that electricity could be made to travel from one place to another by wire, thereby making an important contribution to the science of electricity. 1820 - Electromagnetism, Current In 1820, a physicist Hans Christian Oersted, learned that a ...
THE EFFECT OF MAGNETIC FIELD ON WATER HARDNESS
... Powerful electromagnets were used in hot water systems since the 1960s in the Soviet Union (Grutsch [10]). The application of magnetic treatment was reported in the United States since 1975 (Grutsch & McClintock [11]). The phenomenon of water treatment with an applied magnetic field has been known f ...
... Powerful electromagnets were used in hot water systems since the 1960s in the Soviet Union (Grutsch [10]). The application of magnetic treatment was reported in the United States since 1975 (Grutsch & McClintock [11]). The phenomenon of water treatment with an applied magnetic field has been known f ...
Acoustomagnetoelectric Effect in Graphene
... width are proposed [18]. Zigzag being metallic, armchair can be semiconducting, metallic or insulating depending upon the width of the sheet. By patterning graphene into narrow ribbons creates an energy gap where AGNR becomes semiconductor [19–21]. However, graphite (bunch of Graphene) have planar s ...
... width are proposed [18]. Zigzag being metallic, armchair can be semiconducting, metallic or insulating depending upon the width of the sheet. By patterning graphene into narrow ribbons creates an energy gap where AGNR becomes semiconductor [19–21]. However, graphite (bunch of Graphene) have planar s ...
Magnetic anisotropy modified by electric field in V/Fe/MgO(001)
... perpendicular to in-plane. Another point is the very large bs value observed in this system, the largest reported up to now (bs¼1150 6 50 fJ V1 m1 here to compare to 50 in Ref. 9, 600 in Ref. 17, and 944 in Ref. 18). This is much larger than calculated values. Finally, the PMA is here suppressed ...
... perpendicular to in-plane. Another point is the very large bs value observed in this system, the largest reported up to now (bs¼1150 6 50 fJ V1 m1 here to compare to 50 in Ref. 9, 600 in Ref. 17, and 944 in Ref. 18). This is much larger than calculated values. Finally, the PMA is here suppressed ...
Chapter 29
... changes with time. (e) The particle is at rest. 2. A charged particle is traveling through a uniform magnetic field. Which of the following statements are true of the magnetic field? There may be more than one correct statement. (a) It exerts a force on the particle parallel to the field. (b) It exe ...
... changes with time. (e) The particle is at rest. 2. A charged particle is traveling through a uniform magnetic field. Which of the following statements are true of the magnetic field? There may be more than one correct statement. (a) It exerts a force on the particle parallel to the field. (b) It exe ...
Objective Questions
... parallel to the magnetic field. (d) The magnitude of the magnetic field changes with time. (e) The particle is at rest. 2. A charged particle is traveling through a uniform magnetic field. Which of the following statements are true of the magnetic field? There may be more than one correct statement. ...
... parallel to the magnetic field. (d) The magnitude of the magnetic field changes with time. (e) The particle is at rest. 2. A charged particle is traveling through a uniform magnetic field. Which of the following statements are true of the magnetic field? There may be more than one correct statement. ...
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.