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#Evaporation
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It's the most fundamental of processes—the evaporation of water from the surfaces of oceans and lakes, the burning off of fog in the morning sun, and the drying of briny ponds that leaves solid salt behind. Evaporation is all around us, and humans have been observing it and making use of it for as long as we have existed. And yet, it turns out, we've been missing a major part of the picture all along. In a series of painstakingly precise experiments, a team of researchers at MIT has demonstrated that heat isn't alone in causing water to evaporate. Light, striking the water's surface where air and water meet, can break water molecules away and float them into the air, causing evaporation in the absence of any source of heat. The astonishing new discovery could have a wide range of significant implications. It could help explain mysterious measurements over the years of how sunlight affects clouds, and therefore affect calculations of the effects of climate change on cloud cover and precipitation. It could also lead to new ways of designing industrial processes such as solar-powered desalination or drying of materials.
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fuckyeahfluiddynamics · 2 months
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Skittering Drops
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Drip some ethanol on a hot surface, and you'd expect it to spread into a thin layer and evaporate. But that doesn't always happen, and a recent study looks at why. (Image and research credit: P. Kant et al.; via APS Physics) Read the full article
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nemfrog · 9 months
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The hydrologic cycle. Earth Science. 1970.
Internet Archive
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Inspired by the classic drinking bird toy, scientists in Hong Kong and Guangzhou, China have developed an engine that efficiently converts energy from water evaporation into electricity to power small electronics. The device produces energy outputs exceeding 100 volts -- much higher than other techniques that generate electricity from water -- and can operate for several days using only 100 milliliters of water as fuel, according to a study published March 14 in the journal Device. "The drinking bird triboelectric hydrovoltaic generator offers a unique means to power small electronics in ambient conditions, utilizing water as a readily available fuel source," said Hao Wu, a professor at South China University of Technology and the first author of the study. "I still feel surprised and excited when witnessing the actual results."
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ftvs-cm45 · 3 months
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Emotion Distress For Fire
While in distress, Ember Lumen's "fire" tends to generate a magnificent prismatic light.
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Other times, it's almost as if it nearly goes out completely. In other words, she can feel less firey.
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Aside from Wade's way with words, Ember, having developed feelings for him, considers being with him. But that's rather impossible because they're basically opposites. As a result, she cries the very first tear in her life.
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Due to Ember's presence and being trapped in the small hearth, Wade starts to boil and evaporate and, unlike him, the former couldn't bear losing him.
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Now having lost her boyfriend, Ember comes clean to her father, Bernie, telling him that she doesn't want to run the shop and about her feelings for Wade. Bernie tells her that SHE'S was his dream, not the shop.
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Bonus (Happy Ending)
Little did they know, evaporation is equivalent to the water cycle, and the hearth was rather damp. In other words, Wade didn't die, and with Ember's words of encouragement, he managed to come back.
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Overall, she learned that she should always listen to herself and follow her heart and passion.
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autoacafiles · 5 months
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Been a while since I posted some of my Artfight material, so, uh, let's just say these profiles are part of the same unit.
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Vispar is the creation of @zdraws
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Tail-Wind is the creation of twitter user purplgreencream
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Angeltide and Moonshout were created by DeadAngelCat
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and Crosswind is the creation of @doomface
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ask-lifty-shifty · 7 months
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so uh
u guys like uhhh
uhhmm
stealing stuff?
*disappears*
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Yes, they do like stealing stuff.
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tenth-sentence · 7 days
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Evaporation of the solvent yields the primary alcohol.
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"Chemistry" 2e - Blackman, A., Bottle, S., Schmid, S., Mocerino, M., Wille, U.
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bumblebeeappletree · 1 year
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Permaculture Instructor Andrew millison explains how trees are connected to water in the atmosphere as well as water flowing through the landscape. This video articulates the amazing role that trees play to ecosystem and climate health, and how their removal causes the drought-flood cycle.
There may be some questions about the scientific validity of the concept that forests attract rain. Here are a number of peer reviewed scientific articles to support the hypothesis which suggests that forest cover plays a much greater role in determining rainfall than previously recognized. They explain how forested regions generate large-scale flows in atmospheric water vapor.
How Forests Attract Rain: An Examination of a New Hypothesis. (peer-reviewed)
https://academic.oup.com/bioscience/a...
(abstract and access to full text)
Makarieva A.M., Gorshkov V.G., Sheil D., Nobre A.D., Bunyard P., Li B.-L. (2014) Why does air passage over forest yield more rain? Examining the coupling between rainfall, pressure, and atmospheric moisture content. Journal of Hydrometeorology, 15, 411-426. (peer-reviewed)
doi:10.1175/JHM-D-12-0190.1. (abstract and access to full text)
http://www.bioticregulation.ru/common... (full text)
Report: Forests may play bigger role in rainfall than estimated (non-academic)
https://forestsnews.cifor.org/22060/r... (full text)
Does Anthropogenic Land Use Change Play a Role in Changes of Precipitation Frequency and Intensity over the Loess Plateau of China? (peer reviewed) https://www.mdpi.com/2072-4292/10/11/... (full text)
Estimation of Actual Evapotranspiration in a Semiarid Region Based on GRACE Gravity Satellite Data—A Case Study in Loess Plateau (Peer reviewed) https://www.mdpi.com/2072-4292/10/12/... (full text)
New meteorological theory argues that the world’s forests are rainmakers (non-academic)
https://news.mongabay.com/2012/02/new... (full text)
Another important concept from the video is that condensation and evaporation in large areas of forest causes moist air to flow to land
From the abstract of the article below: “ Intense condensation associated with high evaporation from natural forest cover maintains regions of low atmospheric pressure on land. This causes moist air to flow from ocean to land, which compensates the river runoff….High evaporation and large extent of natural forests guarantee both a stable and high throughput hydrological cycle. Forests protect a continent against devastating floods, droughts, hurricanes, and tornadoes. Sustaining natural forests is a sound strategy for water security and climate stabilization.”
Makarieva A.M., Gorshkov V.G. (2010) The Biotic Pump: Condensation, atmospheric dynamics and climate. International Journal of Water, 5(4), 365-385. (peer-reviewed)
http://www.bioticregulation.ru/common... (full text)
Makarieva A.M., Gorshkov V.G., Li B.-L. (2013) Revisiting forest impact on atmospheric water vapor transport and precipitation. Theoretical and Applied Climatology, 111, 79-96. (peer-reviewed)
http://www.bioticregulation.ru/common... (full text)
Makarieva A.M., Gorshkov V.G., Li B.-L. (2009) Precipitation on land versus distance from the ocean: Evidence for a forest pump of atmospheric moisture. Ecological Complexity, 6, 302-307. (peer-reviewed)
http://www.bioticregulation.ru/common... (full text)
An undamaged Amazon produces its own clouds and rain (non-academic)
https://news.mongabay.com/2010/09/an-... (full text)
Relationships between forests and weather. EC Directorate General of the Environment. 13th January 2012. Michael Sanderson, Monia Santini, Riccardo Valentini and Edward Pope. from the Met Office, a UK government weather resource (non-academic)
http://ec.europa.eu/environment/fores... (full text)
Andrew Millison’s links:
https://www.andrewmillison.com/
https://permaculturedesign.oregonstat...
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farmerstrend · 4 months
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Furrow irrigation, a time-tested agricultural practice
Furrow irrigation is an ancient and well-trusted way of watering crops that has been practiced for a very long time. This method involves creating small channels or furrows between the rows of crops to efficiently deliver water to the plants. It has proven to be especially effective for various crops like corn, soybeans, cotton, and vegetables. The basic idea is to make these channels alongside…
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fuckyeahfluiddynamics · 3 months
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nemfrog · 1 year
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Earth's water cycle.
NASA
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Evaporation is happening all around us all the time, from the sweat cooling our bodies to the dew burning off in the morning sun. But science's understanding of this ubiquitous process may have been missing a piece all this time. In recent years, some researchers have been puzzled upon finding that water in their experiments, which was held in a sponge-like material known as a hydrogel, was evaporating at a higher rate than could be explained by the amount of heat, or thermal energy, that the water was receiving. And the excess has been significant -- a doubling, or even a tripling or more, of the theoretical maximum rate. After carrying out a series of new experiments and simulations, and reexamining some of the results from various groups that claimed to have exceeded the thermal limit, a team of researchers at MIT has reached a startling conclusion: Under certain conditions, at the interface where water meets air, light can directly bring about evaporation without the need for heat, and it actually does so even more efficiently than heat. In these experiments, the water was held in a hydrogel material, but the researchers suggest that the phenomenon may occur under other conditions as well.
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fefiemmanouil1 · 2 years
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ancientorigins · 2 years
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Climate change has given us countless new artifacts, all over the world, as glaciers melt and lakes evaporate, but ruins are falling apart faster, and artifacts perish too.
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msboutofcontext · 1 year
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