Off topic, sorry, but curiosity requires 
The terms "adiabatic" / "adiabatic equation" are used quite frequently, especially w.r.t. earth bond csa calculations.
Oxford English Dictionary defines adiabatic as "relating to or denoting a process or condition in which heat does not enter of leave the system concerned", Wiki states "In thermodynamics, an adiabatic process is a conversion that occurs without input or release of heat within a system."
So how has this term come to be used w.r.t. earth bonding?
Like I say, just curiosity...

The terms "adiabatic" / "adiabatic equation" are used quite frequently, especially w.r.t. earth bond csa calculations.
Oxford English Dictionary defines adiabatic as "relating to or denoting a process or condition in which heat does not enter of leave the system concerned", Wiki states "In thermodynamics, an adiabatic process is a conversion that occurs without input or release of heat within a system."
So how has this term come to be used w.r.t. earth bonding?
Like I say, just curiosity...
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