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Heat & Thermodynamics:

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  • If we can excite molecules,  materials generate heat  (Eq : micro wave cooker, hitting a nail with hammer, passing a flow of electrons through a conductor). If we  heat  an iron rod it gradually increases its temperature and turns red then yellow and become bright. It shows emission of light start later than emission of thermal energy. Thermal radiation emits from all matters possessing thermal energy. However the highest temperatures available universally cannot be measured with manmade instruments, and it should be calculated by theoretical means.

  • The temperature in space is absolute zero. All objects radiate heat until it cools to absolute zero. The absolute zero value is approximately 2.725 Kelvin ( or -270 degrees Celsius / -455 Fahrenheit). At this temperature movement of molecules between each other will stop.

  • Below absolute zero Energy is not available as heat. It is the lowest state of energy available in the form of heat.

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For more information contact  :   Leelananda Jayasuriya   (leel6391@yahoo.com )   Phone : 0094 112915390

Search Engine Submission - AddMe

Last edited : On 7th October 2010  by Leelananda Jayasuriya.