The
heat is transf
erence of energy
thermal from one system to another, less temperature . energy
can be generated by thermal chemical reactions (as in combustion), reactions
nuclear (As in nuclear fusion of atoms of hydrogen that
occur inside the
Sun ), electromagnetic dissipation (as in
microwave ovens) or mechanical dissipation (friction). His concept is linked to
and Thermodynamics , under which two bodies in contact exchange energy until your temperature is
balance.
The heat is always transferred between different bodies or
different parts of one body found at different temperatures and heat flux
always occurs from the body of higher temperature to lower body temperature, the transfer occurring heat until
that both bodies are in thermal equilibrium .
Heat can be transferred
by different mechanisms, among which include EU radiation the driving and convection , although most
real processes all the above mechanisms are present in greater or lesser degree.
which can exchange heat a body with its environment depends on the type of transformation that takes place
on that body and therefore depends on the path. bodies not
are hot, but internal energy . Heat is the transfer of part of
that internal energy ( heat ) from one system to another, provided they are at different temperatures.
The thermography is a technique that measures temperatures exact
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distance and without physical contact with the object being studied. By capturing the infrared of electromagnetic spectrum using thermal imagers or of thermovision , you can convert the radiated energy on information on temperarure.
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