hi! anybody know proper functions of heat? I know it makes metals expands, changes matter (ice into water), but I can't think of any more.
any ideas?
thanks :D
any ideas?
thanks :D
-
Four stipulations for the definition of heat:
(i)It is something which may be transferred from to another, according to the second law of thermodynamics.
(ii)It is a measurable quantity, and thus treated mathematically.
(iii)It cannot be treated as a substance, because it may be transformed into something that is not a substance, e.g., mechanical work.
(iv)It is one of the forms of energy.
Several modern definitions of heat are as follows:
(1) The energy transferred from a high-temperature system to a lower-temperature system is called heat.
(2) Any spontaneous flow of energy from one system to another caused by a difference in temperature between the systems is called heat.
(3) In a thermodynamic sense, heat is never regarded as being stored within a system. Like work, it exists only as energy in transit from one system to another or between a system and its surroundings. When energy in the form of heat is added to a system, it is stored as kinetic and potential energy of the atoms and molecules in the system.
(i)It is something which may be transferred from to another, according to the second law of thermodynamics.
(ii)It is a measurable quantity, and thus treated mathematically.
(iii)It cannot be treated as a substance, because it may be transformed into something that is not a substance, e.g., mechanical work.
(iv)It is one of the forms of energy.
Several modern definitions of heat are as follows:
(1) The energy transferred from a high-temperature system to a lower-temperature system is called heat.
(2) Any spontaneous flow of energy from one system to another caused by a difference in temperature between the systems is called heat.
(3) In a thermodynamic sense, heat is never regarded as being stored within a system. Like work, it exists only as energy in transit from one system to another or between a system and its surroundings. When energy in the form of heat is added to a system, it is stored as kinetic and potential energy of the atoms and molecules in the system.