View source give Relative humidity

{{Databox}}
'''Relative humidity''' be de ratio of ''how much water vapour dey insyd de air'' to ''how much water vapour de air fi potentially contain'' at a given temperature. E dey vary plus de temperature of de air: colder air fi contain less vapour, den water go tend make e condense out of de air more at lower temperatures. So dey change de temperature of air fi change de relative humidity, even wen de absolute humidity remain constant.

For scientific notion insyd, dem dey define de relative humidity (<math>RH</math> anaa <math>\varphi</math>) of an air-water mixture as de ratio of de partial pressure of water vapor (<math>p</math>) insyd air to de saturation vapor pressure (<math>p_s</math>) of water at de same temperature, usually dem express as a percentage:<ref name="Perry">Perry, R. H. and Green, D. W, ''Perry's Chemical Engineers' Handbook'' (8th Edition), McGraw-Hill, [[ISBN (identifier)|ISBN]] 0-07-142294-3, pp. 12–14</ref><ref>{{cite book |last=Lide |first=David |date=2005 |title=CRC Handbook of Chemistry and Physics |edition=85 |url=https://archive.org/details/crchandbookofche81lide/page/15 |publisher=CRC Press |pages=[https://archive.org/details/crchandbookofche81lide/page/15 15–25] |isbn=0-8493-0485-7 }}</ref><ref>Babin, Steven M. (1998). [https://fermi.jhuapl.edu/people/babin/vapor/vapor.html "Relative Humidity & Saturation Vapor Pressure: A Brief Tutorial"]. Johns Hopkins University Applied Physics Laboratory. [https://web.archive.org/web/19980713043127/http://fermi.jhuapl.edu/people/babin/vapor/vapor.html Archived] from the original on 1998-07-13. Retrieved 2022-11-28. (Alternate title: "Water Vapor Myths: A Brief Tutorial".)</ref><math display="block"> \varphi = 100\% \cdot p/p_s</math>

== References ==
<references />
[[Category:Humidity den hygrometry]]
[[Category:Atmospheric thermodynamics]]
[[Category:Climate]]