I was thinking... how can we tell the difference? why can't low temperature objects also be a source of cold flow? one solution I could come up with is heat transfer through radiation. A hot object can heat up another through thermal radiation when there's no matter in between, but there's no "cold rays" emanating from cold objects
In liquids temperature is a measure of average translational kinetic energy of molecules. Low temperature means lesser average translational kinetic energy. In solids the situation is a bit complex, for example, in metals, temperature is a measure of the vibrational kinetic energy of molecules plus the translational kinetic energy of conduction (free) electrons and for insulators the criterion is a little more complex. However, in this particular case, average kinetic energy (thermal energy) of the molecules of ice is lesser than the average kinetic energy of the molecules of hands. Therefore, the thermal energy flows from hands to ice through conduction. The video on the following link may be helpful th-cam.com/video/JmUir5NhBMU/w-d-xo.html
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I was thinking... how can we tell the difference? why can't low temperature objects also be a source of cold flow?
one solution I could come up with is heat transfer through radiation. A hot object can heat up another through thermal radiation when there's no matter in between, but there's no "cold rays" emanating from cold objects
In liquids temperature is a measure of average translational kinetic energy of molecules. Low temperature means lesser average translational kinetic energy. In solids the situation is a bit complex, for example, in metals, temperature is a measure of the vibrational kinetic energy of molecules plus the translational kinetic energy of conduction (free) electrons and for insulators the criterion is a little more complex.
However, in this particular case, average kinetic energy (thermal energy) of the molecules of ice is lesser than the average kinetic energy of the molecules of hands. Therefore, the thermal energy flows from hands to ice through conduction. The video on the following link may be helpful
th-cam.com/video/JmUir5NhBMU/w-d-xo.html