PDF-Negative viscosity of ferrofluid under alternating magnetic field Mark I

Shliomisa and Konstantin I Morozov Institute of Continuous Media Mechanics of the Russian Academy of Sciences Petm 614061 Russia Received 17 September 1993 accepted 19 April 1994 A stationary magnetic field induces an increase in the ferrofluid visc. In addition magnetic fields create a force only on moving charges The direction the magnetic field produced by a moving charge is perpendicular to the direction of motion The direction of the force due to a magnetic field is perpendicular to the dir Consider a uniform magnetic field into the board, with conducting rod moving through it:.  . + side. - side. Charges will move. If part of a circuit, can generate a current!. Which direction is the current through the resistor?. Acknowledgments:. . I’d like to thank Professor James . Krzanowski. , for letting us use his lab, Professor Roy . Planalp. and . Lea . Nyiranshuti. . for guidance and advice. Most importantly, I’d like to thank the . Sarah Arveson. Magnetism. A charged particle will experience a force when placed in a magnetic field and given an initial velocity. This is given by the Lorenz force. where q is the charge of the particle in Coulombs, m is the mass of the particle in kilograms, v is velocity in meters per second, and B is the magnetic field in . . Lenz's law . Induced current produces a secondary magnetic field that is always opposed to the primary magnetic field that induced it, an effect called . Lenz’s law. .. Self-inductance (L). The alternating current in the coil generates an alternating magnetic field that induces an . separatrix. of magnetically confined . plasmas. S.R.Hudson. . (PPPL) & Y. Suzuki (NIFS. ). T. he most important theoretical/numerical calculation . in the study of magnetically confined plasmas . Physics 2415 Lecture 18. Michael Fowler, . UVa. Today’s Topics. More about solenoids. Biot-Savart. law. Magnetic materials. Ampère’s Law: General Case. Ampère’s Law states that for any magnetic field generated by a steady flow of electrical currents, if we take an arbitrary closed path in space and integrate around it, then . Section 4.3. isopropanol . vs. . propylene glycol . vs . glycerol. . viscosity. : the resistance of a fluid to flowing and movement. we say a . thick. fluid has high viscosity, or is very viscous. Learning Outcomes. Distinguish between alternating and direct current.. State . the frequency of UK mains electricity.. Describe . how the potential of the live wires varies each cycle.. State . that the potential of the neutral wire is approximately . Read pages 439 - 454. AC Generator. As the ring rotates within the magnetic field, what happens?. Sketch a graph to show how the rotation of the ring will affect the reading on the attached voltmeter.. Final Report. 8 April 2014. Team Couch Street. Alex Arlint. Jake . Nylund. Kevin . Ratuiste. Robert Rodriguez. Academic Advisor:. . . Joseph . Hoffbeck. Industry Representative:. . John Turner – . Viscosity is a quantitative measure of a fluid’s resistance to flow.. Dynamic (or Absolute) Viscosity. :. The dynamic viscosity(. η. ) of a fluid is a measure of the resistance it offers to relative shearing motion.. What is the need for an AC circuit?. The generation of single phase voltage.. The relation between time and angle.. The maximum, average and effective value.. The form factor and peak factor.. Phasor representation of sinusoidal waveform.. 26.6.12. Surface Tension. Temperature. Solute. Solutes can have different effects on surface tension depending on their structure:. Little or no effect, for example sugar. Increase surface tension, inorganic salts.