Engineering Materials
The molecules in a solid move

In a random manner
In circular motion
In a haphazard way
Back and forth like tiny pendulums

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Engineering Materials
The temperature required for full annealing in hypereutectoid steel is

30° C to 50° C below upper critical temperature
30° C to 50° C below lower critical temperature
30° C to 50° C above lower critical temperature
30° C to 50° C above upper critical temperature

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