Content deleted Content added
RProgrammer (talk | contribs) Gravity affects weight not mass :) |
RProgrammer (talk | contribs) The two extensive properties in the ratio have to be from the same thing, to be sure XD --I think we should clarify that |
||
Line 8:
By contrast, an '''extensive property''' is one that is additive for independent, noninteracting subsystems.<ref name=IUPAC>[http://media.iupac.org/publications/books/gbook/IUPAC-GB3-2ndPrinting-Online-22apr2011.pdf IUPAC Green Book] Quantities, Units and Symbols in Physical Chemistry (3rd edn. 2007), page 6 (page 20 of 250 in PDF file)</ref> The property is proportional to the amount of material in the system. For example, both the mass and the volume of a diamond are directly proportional to the amount that is left after cutting it from the raw mineral. Mass and volume are extensive properties, but hardness is intensive.
The ratio of two extensive properties of the same object or system is scale-invariant, and is therefore an intensive property. For example, the ratio of the extensive properties mass and volume, the density, is an intensive property.
This terminology of intensive and extensive properties was introduced by [[Richard C. Tolman]] in 1917.<ref name=Redlich/>
| |||