5/5/2014
what is heat?
heat: Warmness,cold,hotness.
conduction: is a direct transmission through a substance when there is a difference of temperature or of electrical potential movement of heat to materials
convection: the movement caused within a fluid transfer of hotter and less dense material to rise, and colder, denser material to sink under the influence of gravity that results in transfer of heat..
radiation: The emission of energy as electromagnetic waves, high-energy particles that cause ionization..
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