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This mesmerizing phenomenon occurs because liquid oxygen is highly paramagnetic (attracted to magnets), and it boils at an incredibly low temperature, roughly 200°C colder than room temperature. This massive temperature difference triggers the Leidenfrost effect, where the liquid oxygen instantly vaporizes upon contact with a warmer surface, creating a...

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Massimo

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77,162 просмотров • 1 месяц назад •via X (Twitter)

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As a droplet touches a liquid surface it bounces gently, kept afloat momentarily by a thin air cushion. As the air dissipates the droplet comes in contact with the liquid. The droplet undergoes a multi-step coalescence journey: with each interaction, it merges and reduces in size, transitioning into a smaller droplet, until it eventually fully merges with the liquid below.
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As a droplet touches a liquid surface it bounces gently, kept afloat momentarily by a thin air cushion. As the air dissipates the droplet comes in contact with the liquid. The droplet undergoes a multi-step coalescence journey: with each interaction, it merges and reduces in size, transitioning into a smaller droplet, until it eventually fully merges with the liquid below.

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Liquid oxygen clings to magnets it's visibly pulled toward them because it's paramagnetic😱😱
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Liquid oxygen clings to magnets it's visibly pulled toward them because it's paramagnetic😱😱

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surface modification technique that uses low-temperature plasma to increase the surface energy of materials to bond with new coatings
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We were showing new staff members the benefit that fans can provide during these “dog days of summer.” This is a FLIR video I took a few seasons ago. You can see the surface temperature drop as the fan blows air across the surface. Without the fan, the surface temperature was well over 100 degrees. #fairview #summer #golf #golfcoursemaintenance #fans #summergolf #greenwich
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We were showing new staff members the benefit that fans can provide during these “dog days of summer.” This is a FLIR video I took a few seasons ago. You can see the surface temperature drop as the fan blows air across the surface. Without the fan, the surface temperature was well over 100 degrees. #fairview #summer #golf #golfcoursemaintenance #fans #summergolf #greenwich

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Cesium (Cs) is a silvery-gold alkali metal known for its high reactivity and low melting point, making it liquid at or near room temperature.
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Cesium (Cs) is a silvery-gold alkali metal known for its high reactivity and low melting point, making it liquid at or near room temperature.

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The Rehbinder effect is a phenomenon in physics that reduces the hardness and ductility of a material by a surfactant film. A surfactant is a substance that lowers the surface tension of a liquid, such as water. When a ceramic cup is submerged in water, the water acts as a surfactant and weakens the bonds between the atoms on the surface of the cup. This makes it easier to pierce the cup with a nail without breaking it.
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The Rehbinder effect is a phenomenon in physics that reduces the hardness and ductility of a material by a surfactant film. A surfactant is a substance that lowers the surface tension of a liquid, such as water. When a ceramic cup is submerged in water, the water acts as a surfactant and weakens the bonds between the atoms on the surface of the cup. This makes it easier to pierce the cup with a nail without breaking it.

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🌡️ The latest #C3S Climate Bulletin reports the fifth-warmest January globally, with an average surface air temperature 1.47°C above pre-industrial level. Global average sea surface temperature 4th-highest on record for the month. 🔗 #CopernicusClimate

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Waterspout (or Sengkayan) is a columnar whirlwind phenomenon that occurs above the surface of water (sea or lake), similar to a land tornado but usually weaker, and occurs in tropical/subtropical regions. This phenomenon takes the form of a funnel connecting the water surface with clouds (cumulus or cumulonimbus). 🫣😱😱😱

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This is what happens when iron is heated above its Curie Point (770 °C) At around 770 °C, iron (Fe) reaches its Curie point, which is the critical temperature at which it transitions between the ferromagnetic and paramagnetic states. Below this temperature (770 °C ≈ 1043 K), the atomic magnetic moments in iron align within regions called magnetic domains, producing strong and persistent magnetism. When iron is heated above the Curie point, thermal agitation disrupts this alignment, and the material loses its ferromagnetic properties and becomes paramagnetic. Iron is a classic example used to illustrate the Curie point, but other ferromagnetic materials have different thresholds. Cobalt transitions at around 1100 °C, while nickel transitions at around 350 °C. The phenomenon was first described by Pierre Curie in 1895. He showed that certain materials lose their spontaneous magnetization when heated beyond a specific temperature, a behavior that is now known as the Curie effect. This temperature threshold is important in practical engineering. For example, the iron cores in soldering irons must remain below their Curie point to maintain stable magnetic performance. In magneto-optical storage, materials are temporarily heated above their Curie temperature to erase or rewrite data by suppressing their magnetism.
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