academiccompositionab
Empowerment Equalizer
SSaragian
Antony Sammeroff
Ann Sterzinger
Rodney
RJ
busterjames
cainusmaxus
Craig FitzGerald
David Heleniak
Caity & Dan Greene
keirmartland
Keith Preston
Bill the Butcher
ljp711
MRDA
Jack Donovan
Rachel Haywire
comrade hermit
Michael
Vince
robertstark2014
Noonan
S E Pearson
Rachel Haywire
Nexus X HumectressWhen it comes to heat, the human body is remarkably resilient — it’s the humidity that makes it harder to cool down. And humidity, driven in part by climate change, is increasing.
A measurement of the combination of heat and humidity is called a “wet-bulb temperature,” which is determined by wrapping a completely wet wick around the bulb of a thermometer. Scientists are using this metric to figure out which regions of the world may become too dangerous for humans.
A term we rarely hear about, the wet-bulb temperature reflects not only heat, but also how much water is in the air. The higher that number is, the harder it is for sweat to evaporate and for bodies to cool down.
[Wet-bulb temperature is important, climate experts say. So what is it?]
At a certain threshold of heat and humidity, “it’s no longer possible to be able to sweat fast enough to prevent overheating,” said Radley Horton a professor at Columbia University’s Lamont-Doherty Earth Observatory.
Attack the System
Categories: Environment
Look up a device called a “psychometer”, which is used to measure Relative Humidity.
https://en.wikipedia.org/wiki/Hygrometer#Psychrometers
“A psychrometer, or a wet and dry-bulb thermometer, consists of two calibrated thermometers, one that is dry and one that is kept moist with distilled water on a sock or wick.[5] At temperatures above the freezing point of water, evaporation of water from the wick lowers the temperature, such that the wet-bulb thermometer will be at a lower temperature than that of the dry-bulb thermometer. When the air temperature is below freezing, however, the wet-bulb must be covered with a thin coating of ice, in order to be accurate. As a result of the heat of sublimation, the wet-bulb temperature will eventually be lower than the dry bulb, although this may take many minutes of continued use of the psychrometer.”
“Psychrometer probably made in Switzerland circa 1850 by Kappeller (MHS Geneva)
Relative humidity (RH) is computed from the ambient temperature, shown by the dry-bulb thermometer and the difference in temperatures as shown by the wet-bulb and dry-bulb thermometers. Relative humidity can also be determined by locating the intersection of the wet and dry-bulb temperatures on a psychrometric chart. The dry and wet thermometers coincide when the air is fully saturated, and the greater the difference the drier the air. Psychrometers are commonly used in meteorology, and in the HVAC industry for proper refrigerant charging of residential and commercial air conditioning systems.”