Wednesday, December 19, 2018

robbering folder (magnetic door alarm)

welcome back to war. Wednesday, 21.30 pm! Magnetic door alarm!
Curie Point- When a piece of iron gets too hot, it loses its attraction to a magnet.

EXPLORATORIUM.EDU
Curie Point
A piece of iron ordinarily will be attracted to a magnet, but when you heat the iron to a high enough temperature (called the Curie point), it loses its ability to be magnetized. Heat energy scrambles the iron atoms so they can’t line up and create a magnetic field—this Snack is a simple demonst...

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