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Showing posts with the label infrared radiation

Heat And Temperature

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  Throughout my career, I noticed that even college students have yet to have a clear idea about temperature and heat. Sometimes, they misunderstand both are the same. In this article, I discuss the difference between heat and temperature. Average daily variation in human body temperature [1] The following table gives the difference point-wise . No Heat Temperature 1 Heat is a form of energy.  Temperature is a measure of that energy  2 Heat travels from one object to another due to a temperature difference.  The temperature rises when heated and falls when cooled. 3 Able to do work.  Not able to do work 4 Units: Joules, Calories, BTU (British Thermal Units), kW (kilowatt) Kelvin, Celsius, Fahrenheit, Rankine 5 Measuring device: Calorimeter Thermometer 6 Symbol: Q Symbol: T 7 The energy of the matter = zero.  Absolute zero 8 Heat depends: on speed, size, and number of particles Temperature is independent of these factors 9 Values: positive.  Values: positive and negative   A glowing-hot