R-value: Difference between revisions

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I described what the R-value is in engineering.
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{{wiktionary|r-value|rvalue}}
'''R-value''' canor '''rvalue''' may refer to:
* Properties of materials:
** [[R-value (insulation)]] in building engineering, the efficiency of insulation of a house
** [[R-value (soils)]] in geotechnical engineering, the stability of soils and aggregates for pavement construction
* [[R-factor (crystallography)]], a measure of the agreement between the crystallographic model and the diffraction data
* [[value (computer science)|r-value]], in computer science, a value that does not have an address in a computer language
* ''R''<sub>0</sub> or ''R'' number, the [[basic reproduction number]] in epidemiology
*[[R-factor (crystallography)]], a measure of the agreement between the crystallographic model and the diffraction data
* In computer science, a [[value (computer science)#lrvalue|pure value which cannot be assigned to]]
* In statistics, ''r'' (or r value) refers to the [[Pearson product-moment correlation coefficient]], often calledor simply ''correlation coefficient''
*In the physical sciences, the [[gas constant]] is often denoted by the symbol R
* In solid mechanics, the [[Lankford coefficient]]
*In ophthalmic optics, r-value refers to the distance between the segment optical center and the segment top
 
In engineering the R-value is the efficiency of solar panels, fuel cells, and solar panels.
== See also ==
* [[R rating (disambiguation)]]
* [[L-value (disambiguation)]]
* [[R rating (disambiguation)]]
* [[R-factor]], a plasmid that codes for antibiotic resistance
* [[List of refrigerants#Numbering scheme|ASHRAE refrigerant designations]], commonly known as R-numbers
 
{{disambigdisambiguation}}

Latest revision as of 15:04, 21 March 2024

R-value or rvalue may refer to:

See also[edit]