Faraday Definition and 213 Threads

  1. K

    How does a Faraday cage protect against lightning strikes?

    I've looked this up extensively on the web but nothing seems to answer this question satisfactorily. For example, here's Wikipedia's answer. I try thinking of it considering the properties of a conductor in electrostatic equilibrium. The charge on a conductor in equilibrium resides on the...
  2. M

    Measuring the Faraday Effect for Frustrated Scientists

    hi. I am currently supposed to be doing a lab on the faraday effect, however the lab manual provided was poorly written and some what clumsy in the experimental procedure. I was wondering if any of you know a good site or book that explains a little about the theory and how experamental...
  3. O

    Derivation Of The Faraday Two-Form

    The Faraday two form is a two form on pairs of four dimensional vectors (3 space +1 time). It is given by(may I be forgiven for the notation): F = E_x dx\wedge dt + E_y dy\wedge dt + E_z dz\wedge dt + B_z dx\wedge dy + B_x dy\wedge dz + B_y dz\wedge dx Most books then go on to say that for...
  4. C

    How can I harness the current induced in a Faraday cage for practical use?

    http://img212.imageshack.us/img212/2931/energyplan26qs.th.png There is my uh rudamentary drawing of a scenerio where something emitting em waves(green) is surrounded by a faraday cage(yellow). umm I believe current is induced in the 'cage', how would I divert the current to use, because if I...
  5. C

    Electric Fields in Faraday cages

    Lets say, hypothetically of course, that i know somebody that had something that, with that something being charged, was generating a strong electric field(or maybe electromagnetic waves?) that was emitted in all directions for infinity, if this hypothetical friend were to put a faraday cage...
  6. M

    Mathematica Mathematical derivation of the Faraday cage from the Maxwell Equations

    Hi, We know that in a space region free from electric charges and surrounded by a conducting surface, the electric field must be zero (this is the Faraday cage). I suspect that this statement can be derived directly from the Maxwell equations, but I don't find this derivation anywhere...
  7. wolram

    Can Static Electricity Penetrate a Faraday Cage?

    please forgive a not very scientific question, i am wondered if static electricity can penetrate a faraday cage, this has to do with ball lightning being seen in an aircraft.
  8. K

    Faraday's Induced Emf: Help & Solutions Needed

    I'm reposting this because my homework is due in an hour and I still have not received help on how to solve this. I understand now that the the loop is equal to one. But could someone be generous enough to explain to me what the area is on problem 2 and 3 and why .503 is wrong for question 1...
  9. P

    A few faraday law questions and emf,

    I got a few problems i am working on and getting stuck on. Here is what i got: Problem 1 A 34 turn circular coil of radius 3.20 cm and resistance 1.00 is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according...
  10. I

    Shield Your Contents: Can Faraday Cages Block Magnetic Fields?

    can a faradays cage be used to block external magnetic fields from interfering with the contents of the cage?
  11. C

    Faraday Disk Experiment: Testing Induction and Efficiency

    I am interested in conducting an experiment to prove or disprove the unusual qualities cited by many concerning the Faraday Disk generator. I have read from several different sources (some bias and others non bias) that an induced EMF can be measured while rotating an induction disk inside...
  12. D

    How can I optimize my Faraday induction generator for a science project?

    Hi i was just wondering if anyone would be able to help me...I am planning on making a faraday induction generator for a science project...I was thinking of using 1" ID pvc tubing open at both ends...I have a couple rare Earth Neodymium Iron Boron magnets that i will place within the tube, and...
  13. F

    Optically active materials + Faraday Rotation

    Hello folks, I have been told that for a linearly polarised wave, the direction of rotation due to the Faraday effect (caused by a constant magnetic field) is independent of the direction of wave propagation, dependent only upon the direction of the magnetic field. Fair enough. Does this...
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