# Heat force?

Inpyo
I know that energy transfer can be done through a force or through heat but I was thinking about heat energy causing water to boil and move around. I thought why isn't heat considered a force?

When there is something hot one can physical perceive heat radiating from the object - it seems analogous to electric field lines radiating out from a charged particle.

Can someone explain to me why heat is not considered as a force?

Thanks,
Ted

## Answers and Replies

Homework Helper
Gold Member
What is the definition of energy, and how is it expressed in the fundamental units? What is the definition of force, and how is it expressed in the fundamental units?

Inpyo
The definition for energy is not so simple; units are joules (kg*m^2/s^2) a force is an interaction commonly expressed as a push or a pull with units of newtons (kg*m/s^2)

I can imagine heat pushing molecules thus resulting in increased motion...

Homework Helper
Gold Member
Energy is not a force. Do not confuse temperature with heat. This may be the root of your question. Do you understand the difference between heat and temperature?

Inpyo
Ok so temperature is basically the measure of motion (energy) of an object's particles and when two things are at different temperatures energy is transferred from the higher temp to lower temp object until both at at the same temperature. This energy transferred is called heat and so as a result of gaining heat an object's particles speed up (gain kinetic energy).

Ok that makes sense thanks for the guidance.

Staff Emeritus