Recent content by w9537

  1. W

    Why a steel plate can shield magnetic field?

    👍 Yes, the magnetic field inside a spherical shell of finite thickness in a uniform field can be calculated as shown in the book <Classical Electrodynamics> by Jackson.
  2. W

    Why a steel plate can shield magnetic field?

    Yes, I know almost everything can be solved and calculated by Maxwell equations. What I want is to understand this intuitively like the interpretation in the book <Introduction to magnetic materials> by B. D. Cullity.
  3. W

    Why a steel plate can shield magnetic field?

    Yes, I just find an explanation that seems plausible to me, and this explanation is better than magnetic-reluctance theory. If you can find a better version, please tell me! Thank you!
  4. W

    Why a steel plate can shield magnetic field?

    I used to understand the shielding effect by magnetic flux line. But the nature of this phenomenon is that the opposing magnetic field produced by the magnetic domain in the steel plate cancels the magnetic field produced by the coil.
  5. W

    Why a steel plate can shield magnetic field?

    Thank you for the reply! It should be a subtraction. Reply
  6. W

    Does an iron ring shield a static magnetic field?

    You can understand this phenomenon from the perspective of magnetic reluctance. But I think the description from the book is more accurate.
  7. W

    Why a steel plate can shield magnetic field?

    If I put a very long steel plate above a coil with DC, the magnetic field above the plate will decrease because of the shielding of the steel plate. However, from the perspective of magnetci domain, some domains will be magnetized to turn to the direction of the magnetic field from the coil...
Top