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March 22nd, 2019

22/3/2019

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Our view to the questions from last week:
  
  • Do thermocouples measure absolute temperature or temperature difference?  Answer: Temperature difference because the output is proportional to the temperature difference between the reference and the measuring junctions.
 
  • Do resistance thermometers measure absolute temperature or temperature difference?  Answer:  Absolute temperature because the sensor's resistance is dependent on the its local average temperature.
 
  • What is the temperature scale in use in the UK and is Centigrade the unit of measurement?  Answer:  The International Temperature Scale of 1990 with Celsius as the unit of measurement.
 
  • Is temperature the amount of thermal energy an object has?  Answer:  Temperature is better described as the intensity of the thermal energy or the kinetic energy density.
 
  • Do temperature measurements need an uncertainty associated with them? Answer: All measurements are useless without an uncertainty.
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