Demo Number 189
Location It is in the PVC pipe attached to the shelving structure of shelf 36
Description Permalloy (High Permeability) — a permalloy rod is not itself magnetic, but if the rod is aligned with a preexisting magnetic field such as the Earth’s or a magnet’s, it becomes magnetic enough to pick up small pieces of iron.
 Related Demos 193, 177
  • Iron filings (or small strip of iron) stick to a permalloy bar held parallel to the earth’s magnetic field but fall off when it is held perpendicular.
  • Hold a permalloy rod near a compass needle.

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This Demo is Part of the following Categories: 5G20 Magnetic Domains and Magnetization