·
If
no heat flows between then when they are connected by a path permeable to heat.
·
Zeroth
Law of thermodynamics.
·
Temporally
uniform.
·
System
allows transfer of energy as heat but does not allow transfer of matter or
transfer of energy as work.
·
Heat
can flow in to or out of a closed system by away of thermal condition or of
thermal radiation to or from a thermal reservoir.
