3 Spontaneous magnetization

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The temperature is now 2, lower than we used for preset 2, the initial arrangement of spins is random, and the external field is zero. Click run and the system quickly becomes magnetized. Increase the number of sweeps and speed each by a factor of ten, click init., and run. As soon as the pattern is mostly spins up, or mostly spins down, click the init. button to randomize the spins. Under repetition you see equal likelihood of magnetizing in either sense, but magnetize it will (well, almost always).