RVALUE
R-value
The R-value is a measure of thermal resistance used in the building and construction industry. Under uniform conditions it is the ratio of the temperature difference across an insulator and the heat flux through it or <math> R = \Delta T/\dot Q_A</math>. The R-value being discussed is the unit thermal resistance. This is used for a unit value of any particular material. It is expressed as the thickness of the material divided by the thermal conductivity. For the thermal resistance of an entire section of material, instead of the unit resistance, divide the unit thermal resistance by the area of the material. For example, if you have the unit thermal ...The above text is a snippet from Wikipedia: R-value (insulation)
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rvalue
Noun
- Any value that is not an lvalue.
The above text is a snippet from Wiktionary: rvalue
and as such is available under the Creative Commons Attribution/Share-Alike License.