Mastodawn

Physicists 3D-printed a Christmas tree of ice https://arstechni.ca/KF25 #evaporativecooling #3Dprinting #Science #Physics

Physicists 3D-printed a Christmas tree of ice

New method uses no freezing technology or refrigeration equipment—just water and a vacuum.

Ars Technica

Vagrant Cascadian Jul 20, 2025

During the heat waves this summer, here in lovely #Cascadia I have been making great use of #EvaporativeCooling

Works quite well here, as we have dry, hot summers, and reasonably abundant water sources.

Got a used commercially manufactured one plugged into the grid for power...

You have to make sure to exhaust the humidified air, but it uses a tiny amount of power (80-120W) for how much cooling it can provide!

Also built a small #DIY one running directly off #Solar

#PacificNorthwest

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Raccoon🇺🇸🏳️‍🌈Sep 14, 2024

But that's how #EvaporativeCooling works: as the less radical people find themselves unable to stay in, the movement becomes more radical in general.

...which says something really scary about the people who are still hardcore Trump supporters. 8 years ago they could have said that Hillary Clinton was too much of an insider and had too many problems. 4 years ago they could have said that Trump hadn't gotten enough of a chance. As he gets more unhinged in public and Kamala Harris becomes more obviously competent, you have to wonder what kind of people are still supporting him.

What's scarier to me though is, even though I knew for decades there was a strong Neo-Nazi movement in America, and a huge number of straight white males who just kind of accepted their presence and were willing to work with them, I never realized they were powerful enough to actually get these kinds of votes in an election.

I think America truly is a racist, sexist country, and that's heartbreaking.

Glen L Creasy May 1, 2024

Looking to the past to solve today's problems....

3,000-year-old underground aqueduct technology, qanat tunnels, are being used today to bring water to areas where they're needed, including water for passive cooling.

The creation of city gardens help cool the air, plus solar-powered pump systems take advantage of evaporative cooling to make a more comfortable environment in the hot summer months

https://www.aljazeera.com/features/2024/4/28/how-an-ancient-design-is-cooling-21st-century-streets

#ClimateChange #EvaporativeCooling #HeatWaves #Qanat #OldIsNew

How an ancient water tunnel design is cooling 21st-century streets

In Seville, 3,000-year-old underground technology is being transformed in modern day air-conditioning.

Al Jazeera

Stefan F. Wirth Nov 17, 2023

In times of #globalwarming, the #coolingeffect of green spaces is of great importance, especially in urban areas. Forests in particular, such as those in parks, produce so-called #evaporativecooling. The underlying moisture is stored in the forest floor or released by plants such as trees via the stomata of their leaves and/or via cuticular transpiration over the entire leaf surfaces.

Full Blog article on my X page including scientific references

Randall Perkinson Photography Nov 4, 2023

Evap Condenser Equipment
Fayette, Missouri, USA
#photography #Missouri #fayette #ac #EvaporativeCooling

💧🌏 Greg Cocks Oct 5, 2023

Negligible Impact On Precipitation From A Permanent Inland Lake In Central Australia
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https://doi.org/10.1029/2023GL103913 <-- shared paper
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“KEY POINTS:
• A climate model is used to test the hypothesis that creating a large lake in central Australia would increase rainfall
• Locally, surface cooling effects of the lake suppress the formation of precipitation
• Regionally, moisture from the lake is exported to other areas but the amount is small compared to natural variability in Australian rainfall..."”
#GIS #spatial #mapping #water #waterresources #hydrology #waterstorage #watersecurity #model #modeling #Australia #KatiThanda #LakeEyre #rainfall #precipitation #farming #agriculture #irrigation #climatemodel #evaporation #ET #evaporativecooling #proposal #research #bradfield #waterscheme #diversion #pumping #impact #spatialanalysis

Doc Edward Morbius ❌Feb 14, 2020

Evaporative Cooling of Group Beliefs

...[I]t’s important to be prejudiced in favor of tolerating dissent. Wait until substantially after it seems to you justified in ejecting a member from the group, before actually ejecting. If you get rid of the old outliers, the group position will shift, and someone else will become the oddball. If you eject them too, you’re well on the way to becoming a Bose-Einstein condensate...

https://www.lesswrong.com/posts/ZQG9cwKbct2LtmL3p/evaporative-cooling-of-group-beliefs

#EvaporativeCooling #GroupDynamics #Tolerance

Evaporative Cooling of Group Beliefs — LessWrong

Early studiers of cults were surprised to discover that when cults receive a major shock—a prophecy fails to come true, a moral flaw of the founder i…