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| valsi |
nildenmi |
| type |
lujvo |
| creator |
krtisfranks |
| time entered |
Thu Dec 11 18:18:00 2014 |
Examples
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English
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Definition #63916
- Preferred
[edit]
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| definition |
x1 [possibly dimensionful number] is the local density/concentration of/in x2 (object) per unit x3 at locus x4, of density type x5; x2 measures x1 units of x5 per unit x3 at locus x4. |
| notes |
x5 might typically refer to count - not mass. Not necessarily (although possible) volumetric mass density; could be temporal, per unit area, per unit length, or other (x3); could be non-mass-based (such as for electric charge or probability densities; x5); relative concentration would be a count density (x5) per count of another substance (x3). Can be applied to number/count; thus, the units may vary and in fact the quantity might even be unitless. In a sense, intensities and fluxes are spacial-temporal densities. It is recommended that x2 be a physical entity/object/field or probability distribution in some sense (not merely have physical quality/meaning/value); thus, while this word could be applied to many things described with the word "per", it would probably not make much sense to call velocity a temporal displacement density (although in some contexts it might). Notice that "local" implies derivatives (Calculus differentiation). |
| gloss words |
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| created by |
krtisfranks |
| vote information |
2
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| time |
Mon Dec 24 03:02:51 2018 |
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