In terms of microscopic temperature depends on the motion of molecules, of which the body is complex. The temperature increases when increasing the energy of these movements. The movement may be related to the movement of molecules (eg, gas), with the vibrations of atoms, molecules (eg, in the crystal), the internal vibrations of the molecule.
Velocity of atoms in thermal motion (at a temperature close to room temperature) is large. At temperatures close to absolute zero velocity reaches a minimum value. For example, in 1994, scientists from NIST received a record low temperature of 700 nK how to lose weight fast. By using the technique of laser direct measurement of the molecules was found that the average velocity of atoms was then 7 mm / s.
Molecule, ie objects consisting of two, three and more atoms, such as O2, have more degrees of freedom than single atoms. In addition to the progressive movement can also rotate or perform internal vibrations (change of distance between atoms in the molecule). The increase in temperature causes an increase in average kinetic energy of each type of traffic. Therefore, the diatomic gas molecules with five degrees of freedom will require a greater input of energy for changes in temperature, which means that it will have greater heat capacity than gas jednoatomowy whose molecules have only three degrees of freedom.
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