def
pm25
Particulate matter 2.5; atmospheric pollutant of fine particles with an aerodynamic diameter of 2.5 micrometers or less
meta
supertypes
| marker |
Marker labels a dict with typing information |
|---|---|
| phenomenon |
Aspect of scientific interest with measurable quantities |
| substance |
Matter in one the three states solid, liquid, or gas |
| solid |
Substance with definite shape and volume |
quantities
| concentration |
Abundance of substance in the total volume of a mixture |
|---|---|
| temp |
Temperature - measure of hot and cold |
| volume |
Three dimensional space occupied by a substance |