Temperature difference between refference and sample in oven
- Reference should be inert and has the same temperature ads the oven
- Temperature of the sample may not be the temperature of the oven
- Phase change occurs: Temperature remains constant until all of the sample has changed. The Energy supplied to the sample is used to change phase
- Temperature - time graph: area under the peak is propertional to the energy required for a phase change
Used to Identify the order of a transition
- 1st order: melting, boiling, high peak
- 2nf order: ferromagnetic , glass transition, shallow curve
It is used for high temperature measurements (T> 1600 degrees)
Disadv: It does not allow quantitative measurements of samples ( heat capacity etc.
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