#evaporation — Public Fediverse posts

Vanishing Spirits: Cognac

Years ago, photographer Ernie Button discovered an intriguing stain left behind in his whiskey glass after the last drops evaporated. That discovery led both to beautiful images and an entire scientific paper analyzing how the alcohol, surfactants, and polymers in the whiskey combined to leave such a uniform stain. Over the years, Button continued investigating liquor stains, looking at gin, rice whisky, and aging effects. Here, he’s turned his lens to cognac, producing stains that look like oil slicks, aerial landscapes, and even cartoonish faces! (Image and submission credit: E. Button)

Vanishing Spirits: Cognac

Years ago, photographer Ernie Button discovered an intriguing stain left behind in his whiskey glass after the last drops evaporated. That discovery led both to beautiful images and an entire scientific paper analyzing how the alcohol, surfactants, and polymers in the whiskey combined to leave such a uniform stain. Over the years, Button continued investigating liquor stains, looking at gin, rice whisky, and aging effects. Here, he’s turned his lens to cognac, producing stains that look like oil slicks, aerial landscapes, and even cartoonish faces! (Image and submission credit: E. Button)

Vanishing Spirits: Cognac

Years ago, photographer Ernie Button discovered an intriguing stain left behind in his whiskey glass after the last drops evaporated. That discovery led both to beautiful images and an entire scientific paper analyzing how the alcohol, surfactants, and polymers in the whiskey combined to leave such a uniform stain. Over the years, Button continued investigating liquor stains, looking at gin, rice whisky, and aging effects. Here, he’s turned his lens to cognac, producing stains that look like oil slicks, aerial landscapes, and even cartoonish faces! (Image and submission credit: E. Button)

Vanishing Spirits: Cognac

Years ago, photographer Ernie Button discovered an intriguing stain left behind in his whiskey glass after the last drops evaporated. That discovery led both to beautiful images and an entire scientific paper analyzing how the alcohol, surfactants, and polymers in the whiskey combined to leave such a uniform stain. Over the years, Button continued investigating liquor stains, looking at gin, rice whisky, and aging effects. Here, he’s turned his lens to cognac, producing stains that look like oil slicks, aerial landscapes, and even cartoonish faces! (Image and submission credit: E. Button)

Vanishing Spirits: Cognac

Years ago, photographer Ernie Button discovered an intriguing stain left behind in his whiskey glass after the last drops evaporated. That discovery led both to beautiful images and an entire scientific paper analyzing how the alcohol, surfactants, and polymers in the whiskey combined to leave such a uniform stain. Over the years, Button continued investigating liquor stains, looking at gin, rice whisky, and aging effects. Here, he’s turned his lens to cognac, producing stains that look like oil slicks, aerial landscapes, and even cartoonish faces! (Image and submission credit: E. Button)

Hypereutrophication, Hydrogen Sulfide, And Environmental Injustices - Mechanisms And Knowledge Gaps At The Salton Sea
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https://doi.org/10.1029/2024GH001327
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[I have long been fascinated by this ‘accidental waterbody’, from its creation all the way through the extreme pollution issues as it evaporates – and the lithium under it – a heck of a history, culturally, demographically, hydrologically, contaminants, public health, agriculturally and so much more…]
#GIS #spatial #mapping #Hypereutrophication #HydrogenSulfide, #EnvironmentalInjustice #SaltonSea #California #publichealth #water #hydrology #sea #waterbody #accident #fertiliser #fertilizer #dust #dustborne #lake #degradation #health #community #rural #Latinx #Hispanic #farmworkers #children #TorresMartinezDesert #Cahuilla #Indian #FirstNation #evaporation #H2S #research #waterquality #waterresources #agriculture #environment #airquality #wind #airborne #spatialanalysis #monitoring #spatiotemporal #sensor #emissions #nutrients #Coachella #ImperialValley #sediment

Hypereutrophication, Hydrogen Sulfide, And Environmental Injustices - Mechanisms And Knowledge Gaps At The Salton Sea
-
https://doi.org/10.1029/2024GH001327
-
[I have long been fascinated by this ‘accidental waterbody’, from its creation all the way through the extreme pollution issues as it evaporates – and the lithium under it – a heck of a history, culturally, demographically, hydrologically, contaminants, public health, agriculturally and so much more…]
#GIS #spatial #mapping #Hypereutrophication #HydrogenSulfide, #EnvironmentalInjustice #SaltonSea #California #publichealth #water #hydrology #sea #waterbody #accident #fertiliser #fertilizer #dust #dustborne #lake #degradation #health #community #rural #Latinx #Hispanic #farmworkers #children #TorresMartinezDesert #Cahuilla #Indian #FirstNation #evaporation #H2S #research #waterquality #waterresources #agriculture #environment #airquality #wind #airborne #spatialanalysis #monitoring #spatiotemporal #sensor #emissions #nutrients #Coachella #ImperialValley #sediment

Hypereutrophication, Hydrogen Sulfide, And Environmental Injustices - Mechanisms And Knowledge Gaps At The Salton Sea
-
https://doi.org/10.1029/2024GH001327
-
[I have long been fascinated by this ‘accidental waterbody’, from its creation all the way through the extreme pollution issues as it evaporates – and the lithium under it – a heck of a history, culturally, demographically, hydrologically, contaminants, public health, agriculturally and so much more…]
#GIS #spatial #mapping #Hypereutrophication #HydrogenSulfide, #EnvironmentalInjustice #SaltonSea #California #publichealth #water #hydrology #sea #waterbody #accident #fertiliser #fertilizer #dust #dustborne #lake #degradation #health #community #rural #Latinx #Hispanic #farmworkers #children #TorresMartinezDesert #Cahuilla #Indian #FirstNation #evaporation #H2S #research #waterquality #waterresources #agriculture #environment #airquality #wind #airborne #spatialanalysis #monitoring #spatiotemporal #sensor #emissions #nutrients #Coachella #ImperialValley #sediment

Hypereutrophication, Hydrogen Sulfide, And Environmental Injustices - Mechanisms And Knowledge Gaps At The Salton Sea
-
https://doi.org/10.1029/2024GH001327
-
[I have long been fascinated by this ‘accidental waterbody’, from its creation all the way through the extreme pollution issues as it evaporates – and the lithium under it – a heck of a history, culturally, demographically, hydrologically, contaminants, public health, agriculturally and so much more…]
#GIS #spatial #mapping #Hypereutrophication #HydrogenSulfide, #EnvironmentalInjustice #SaltonSea #California #publichealth #water #hydrology #sea #waterbody #accident #fertiliser #fertilizer #dust #dustborne #lake #degradation #health #community #rural #Latinx #Hispanic #farmworkers #children #TorresMartinezDesert #Cahuilla #Indian #FirstNation #evaporation #H2S #research #waterquality #waterresources #agriculture #environment #airquality #wind #airborne #spatialanalysis #monitoring #spatiotemporal #sensor #emissions #nutrients #Coachella #ImperialValley #sediment

Hypereutrophication, Hydrogen Sulfide, And Environmental Injustices - Mechanisms And Knowledge Gaps At The Salton Sea
-
https://doi.org/10.1029/2024GH001327
-
[I have long been fascinated by this ‘accidental waterbody’, from its creation all the way through the extreme pollution issues as it evaporates – and the lithium under it – a heck of a history, culturally, demographically, hydrologically, contaminants, public health, agriculturally and so much more…]
#GIS #spatial #mapping #Hypereutrophication #HydrogenSulfide, #EnvironmentalInjustice #SaltonSea #California #publichealth #water #hydrology #sea #waterbody #accident #fertiliser #fertilizer #dust #dustborne #lake #degradation #health #community #rural #Latinx #Hispanic #farmworkers #children #TorresMartinezDesert #Cahuilla #Indian #FirstNation #evaporation #H2S #research #waterquality #waterresources #agriculture #environment #airquality #wind #airborne #spatialanalysis #monitoring #spatiotemporal #sensor #emissions #nutrients #Coachella #ImperialValley #sediment

Active Cheerios Self-Propel

The interface where air and water meet is a special world of surface-tension-mediated interactions. Cereal lovers are well-aware of the Cheerios effect, where lightweight O’s tend to attract one another, courtesy of their matching menisci. And those who have played with soap boats know that a gradient in surface tension causes flow. Today’s pre-print study combines these two effects to create self-propelling particle assemblies.

The team 3D-printed particles that are a couple centimeters across and resemble a cone stuck atop a hockey puck. The lower disk area is hollow, trapping air to make the particle buoyant. The cone serves as a fuel tank, which the researchers filled with ethanol (and, in some cases, some fluorescent dye to visualize the flow). Like soap, ethanol’s lower surface tension disrupts the water’s interface and triggers a flow that pulls the particle toward areas with higher surface tension. But, unlike soap, ethanol evaporates, effectively restoring the interface’s higher surface tension over time.

With multiple self-propelling particles on the interface, the researchers observed a rich series of interactions. Without their fuel, the Cheerios effect attracted particles to each other. But with ethanol slowly leaking out their sides, the particles repelled each other. As the ethanol ran out and evaporated, the particles would again attract. By tweaking the number and position of fuel outlets on a particle, the researchers found they could tune the particles’ attractions and motility. In addition to helping robots move and organize, their findings also make for a fun educational project. There’s a lot of room for students to play with different 3D-printed designs and fuel concentrations to make their own self-propelled particles. (Research and image credit: J. Wilt et al.; via Ars Technica)

#3DPrinting #CheeriosEffect #DIYFluids #evaporation #flowVisualization #fluidDynamics #marangoniEffect #physics #science #surfaceTension

Active Cheerios Self-Propel

The interface where air and water meet is a special world of surface-tension-mediated interactions. Cereal lovers are well-aware of the Cheerios effect, where lightweight O’s tend to attract one another, courtesy of their matching menisci. And those who have played with soap boats know that a gradient in surface tension causes flow. Today’s pre-print study combines these two effects to create self-propelling particle assemblies.

The team 3D-printed particles that are a couple centimeters across and resemble a cone stuck atop a hockey puck. The lower disk area is hollow, trapping air to make the particle buoyant. The cone serves as a fuel tank, which the researchers filled with ethanol (and, in some cases, some fluorescent dye to visualize the flow). Like soap, ethanol’s lower surface tension disrupts the water’s interface and triggers a flow that pulls the particle toward areas with higher surface tension. But, unlike soap, ethanol evaporates, effectively restoring the interface’s higher surface tension over time.

With multiple self-propelling particles on the interface, the researchers observed a rich series of interactions. Without their fuel, the Cheerios effect attracted particles to each other. But with ethanol slowly leaking out their sides, the particles repelled each other. As the ethanol ran out and evaporated, the particles would again attract. By tweaking the number and position of fuel outlets on a particle, the researchers found they could tune the particles’ attractions and motility. In addition to helping robots move and organize, their findings also make for a fun educational project. There’s a lot of room for students to play with different 3D-printed designs and fuel concentrations to make their own self-propelled particles. (Research and image credit: J. Wilt et al.; via Ars Technica)

#3DPrinting #CheeriosEffect #DIYFluids #evaporation #flowVisualization #fluidDynamics #marangoniEffect #physics #science #surfaceTension

Active Cheerios Self-Propel

The interface where air and water meet is a special world of surface-tension-mediated interactions. Cereal lovers are well-aware of the Cheerios effect, where lightweight O’s tend to attract one another, courtesy of their matching menisci. And those who have played with soap boats know that a gradient in surface tension causes flow. Today’s pre-print study combines these two effects to create self-propelling particle assemblies.

The team 3D-printed particles that are a couple centimeters across and resemble a cone stuck atop a hockey puck. The lower disk area is hollow, trapping air to make the particle buoyant. The cone serves as a fuel tank, which the researchers filled with ethanol (and, in some cases, some fluorescent dye to visualize the flow). Like soap, ethanol’s lower surface tension disrupts the water’s interface and triggers a flow that pulls the particle toward areas with higher surface tension. But, unlike soap, ethanol evaporates, effectively restoring the interface’s higher surface tension over time.

With multiple self-propelling particles on the interface, the researchers observed a rich series of interactions. Without their fuel, the Cheerios effect attracted particles to each other. But with ethanol slowly leaking out their sides, the particles repelled each other. As the ethanol ran out and evaporated, the particles would again attract. By tweaking the number and position of fuel outlets on a particle, the researchers found they could tune the particles’ attractions and motility. In addition to helping robots move and organize, their findings also make for a fun educational project. There’s a lot of room for students to play with different 3D-printed designs and fuel concentrations to make their own self-propelled particles. (Research and image credit: J. Wilt et al.; via Ars Technica)

#3DPrinting #CheeriosEffect #DIYFluids #evaporation #flowVisualization #fluidDynamics #marangoniEffect #physics #science #surfaceTension

Active Cheerios Self-Propel

The interface where air and water meet is a special world of surface-tension-mediated interactions. Cereal lovers are well-aware of the Cheerios effect, where lightweight O’s tend to attract one another, courtesy of their matching menisci. And those who have played with soap boats know that a gradient in surface tension causes flow. Today’s pre-print study combines these two effects to create self-propelling particle assemblies.

The team 3D-printed particles that are a couple centimeters across and resemble a cone stuck atop a hockey puck. The lower disk area is hollow, trapping air to make the particle buoyant. The cone serves as a fuel tank, which the researchers filled with ethanol (and, in some cases, some fluorescent dye to visualize the flow). Like soap, ethanol’s lower surface tension disrupts the water’s interface and triggers a flow that pulls the particle toward areas with higher surface tension. But, unlike soap, ethanol evaporates, effectively restoring the interface’s higher surface tension over time.

With multiple self-propelling particles on the interface, the researchers observed a rich series of interactions. Without their fuel, the Cheerios effect attracted particles to each other. But with ethanol slowly leaking out their sides, the particles repelled each other. As the ethanol ran out and evaporated, the particles would again attract. By tweaking the number and position of fuel outlets on a particle, the researchers found they could tune the particles’ attractions and motility. In addition to helping robots move and organize, their findings also make for a fun educational project. There’s a lot of room for students to play with different 3D-printed designs and fuel concentrations to make their own self-propelled particles. (Research and image credit: J. Wilt et al.; via Ars Technica)

#3DPrinting #CheeriosEffect #DIYFluids #evaporation #flowVisualization #fluidDynamics #marangoniEffect #physics #science #surfaceTension

Active Cheerios Self-Propel

The interface where air and water meet is a special world of surface-tension-mediated interactions. Cereal lovers are well-aware of the Cheerios effect, where lightweight O’s tend to attract one another, courtesy of their matching menisci. And those who have played with soap boats know that a gradient in surface tension causes flow. Today’s pre-print study combines these two effects to create self-propelling particle assemblies.

The team 3D-printed particles that are a couple centimeters across and resemble a cone stuck atop a hockey puck. The lower disk area is hollow, trapping air to make the particle buoyant. The cone serves as a fuel tank, which the researchers filled with ethanol (and, in some cases, some fluorescent dye to visualize the flow). Like soap, ethanol’s lower surface tension disrupts the water’s interface and triggers a flow that pulls the particle toward areas with higher surface tension. But, unlike soap, ethanol evaporates, effectively restoring the interface’s higher surface tension over time.

With multiple self-propelling particles on the interface, the researchers observed a rich series of interactions. Without their fuel, the Cheerios effect attracted particles to each other. But with ethanol slowly leaking out their sides, the particles repelled each other. As the ethanol ran out and evaporated, the particles would again attract. By tweaking the number and position of fuel outlets on a particle, the researchers found they could tune the particles’ attractions and motility. In addition to helping robots move and organize, their findings also make for a fun educational project. There’s a lot of room for students to play with different 3D-printed designs and fuel concentrations to make their own self-propelled particles. (Research and image credit: J. Wilt et al.; via Ars Technica)

#3DPrinting #CheeriosEffect #DIYFluids #evaporation #flowVisualization #fluidDynamics #marangoniEffect #physics #science #surfaceTension