| 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 |
| Tips |
- 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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