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State whether the following is true or false.
The two-thirds rule for sintering temperature must be applied on the kelvin scale.

  • A.True only at large scales
  • B.False only at small scales
  • C.True
  • D.False

Answer: C

A fraction of a temperature only means anything on an absolute scale, since celsius has an arbitrary zero. Applying the rule in celsius gives an answer several hundred degrees wrong. Absolute temperature is required whenever a ratio is taken.

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