| 31. | When it crosses the A 4 critical temperature, it changes into delta iron, which is magnetic.
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| 32. | The material is heated up to a temperature just below the lower critical temperature of steel.
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| 33. | For temperatures below this critical temperature, the above equation for the particle number has no solution.
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| 34. | It is widely believed that the critical exponents are the same above and below the critical temperature.
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| 35. | At a critical temperature, the symmetry is spontaneously broken, and the W and Z bosons acquire masses.
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| 36. | Therefore, this integral defines the critical temperature and particle number corresponding to the conditions of negligible chemical potential.
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| 37. | In either case, a superconductor with critical temperature higher than that of the operating temperature should be chosen.
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| 38. | Magnetic field lines, represented as arrows, are excluded from a superconductor when it is below its critical temperature.
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| 39. | In general their critical temperature at which they become superconducting rises for the first few members then falls.
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| 40. | All the parylenes have a critical temperature called the threshold temperature above which practically no deposition is observed.
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