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When a nuclear reactor powers on for the first time, the core fills with a deep blue glow that feels almost unreal as it rises through the water in a quiet surge of energy. The light is Cherenkov radiation, created when charged particles move through the water faster than... show more

Today In History

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When a nuclear reactor is switched on for the first time, an intense, almost hypnotic blue glow appears in the water surrounding the reactor core. This light is neither fire nor heat; it is Cherenkov radiation, a physical phenomenon that occurs when charged particles, such as high-energy electrons produced during nuclear fission, travel through a transparent medium faster than light can propagate within that same medium. While nothing can exceed the speed of light in a vacuum, light travels more slowly in materials like water. When a charged particle surpasses this reduced speed, it emits a coherent shock-like electromagnetic wave, often described as an optical analogue of a sonic boom. This radiation produces the distinctive blue glow. The colour arises because Cherenkov radiation is strongest at shorter wavelengths, which are dominated by blue and ultraviolet light. The phenomenon was first observed experimentally in 1934 and later explained theoretically, work that led to the Nobel Prize in Physics in 1958. Its explanation confirmed how relativity and electromagnetism operate in material media. Today, this deep blue light is both a warning and a scientific tool. It signals the presence of intense ionising radiation, while also being exploited in particle detectors, nuclear reactors, and neutrino observatories. It provides a rare, visible manifestation of subatomic processes that are otherwise hidden from direct human perception. #GottaLovePhysics #Physics

When a nuclear reactor is switched on for the first time, an intense, almost hypnotic blue glow appears in the water surrounding the reactor core. This light is neither fire nor heat; it is Cherenkov radiation, a physical phenomenon that occurs when charged particles, such as high-energy electrons produced during nuclear fission, travel through a transparent medium faster than light can propagate within that same medium. While nothing can exceed the speed of light in a vacuum, light travels more slowly in materials like water. When a charged particle surpasses this reduced speed, it emits a coherent shock-like electromagnetic wave, often described as an optical analogue of a sonic boom. This radiation produces the distinctive blue glow. The colour arises because Cherenkov radiation is strongest at shorter wavelengths, which are dominated by blue and ultraviolet light. The phenomenon was first observed experimentally in 1934 and later explained theoretically, work that led to the Nobel Prize in Physics in 1958. Its explanation confirmed how relativity and electromagnetism operate in material media. Today, this deep blue light is both a warning and a scientific tool. It signals the presence of intense ionising radiation, while also being exploited in particle detectors, nuclear reactors, and neutrino observatories. It provides a rare, visible manifestation of subatomic processes that are otherwise hidden from direct human perception. #GottaLovePhysics #Physics

Erika 

276,032 görüntüleme • 7 ay önce

Cherenkov radiation happens when electrically charged particles, such as protons or electrons, travel faster than light in a clear medium like water. A characteristic blue glow of an underwater nuclear reactor is a classic example. ✍️

Cherenkov radiation happens when electrically charged particles, such as protons or electrons, travel faster than light in a clear medium like water. A characteristic blue glow of an underwater nuclear reactor is a classic example. ✍️

Physics In History

146,098 görüntüleme • 9 ay önce

The Elephant’s Foot at Chernobyl is considered one of the most hazardous objects ever created—a lethal mass formed during the 1986 nuclear meltdown. When the reactor exploded, molten nuclear fuel mixed with concrete, steel, and sand, fusing into a lava-like substance that later hardened into a solid formation. Its sagging, wrinkled appearance earned it the name “Elephant’s Foot.” In the early days, even brief exposure nearby could deliver a fatal dose of radiation. Although radiation levels have declined over time, it remains a chilling symbol of the catastrophe—a stark reminder of how immense and uncontrollable nuclear energy can become when containment fails.

The Elephant’s Foot at Chernobyl is considered one of the most hazardous objects ever created—a lethal mass formed during the 1986 nuclear meltdown. When the reactor exploded, molten nuclear fuel mixed with concrete, steel, and sand, fusing into a lava-like substance that later hardened into a solid formation. Its sagging, wrinkled appearance earned it the name “Elephant’s Foot.” In the early days, even brief exposure nearby could deliver a fatal dose of radiation. Although radiation levels have declined over time, it remains a chilling symbol of the catastrophe—a stark reminder of how immense and uncontrollable nuclear energy can become when containment fails.

Historic Vids

1,247,359 görüntüleme • 6 ay önce

This is an old Soviet compass inside a homemade Wilson chamber. At the bottom of the chamber, there is a radiator that is placed in liquid nitrogen. At the top, there is a sponge with alcohol; I used isopropyl alcohol, which, when strongly cooled, becomes supersaturated or supercooled vapor. This is a metastable substance that, when a charged particle passes through it, promotes the formation of a liquid — in this case, traces of fog, which you can see in this video. Perhaps it is also possible to detect uncharged particles in the form of high‑energy gamma quanta or secondary cosmic radiation. I have sometimes seen tracks of particles that are unknown to me. But in this video, it’s more likely to be radium undergoing alpha decay. That’s what compasses were like many years ago. Be careful with them.

This is an old Soviet compass inside a homemade Wilson chamber. At the bottom of the chamber, there is a radiator that is placed in liquid nitrogen. At the top, there is a sponge with alcohol; I used isopropyl alcohol, which, when strongly cooled, becomes supersaturated or supercooled vapor. This is a metastable substance that, when a charged particle passes through it, promotes the formation of a liquid — in this case, traces of fog, which you can see in this video. Perhaps it is also possible to detect uncharged particles in the form of high‑energy gamma quanta or secondary cosmic radiation. I have sometimes seen tracks of particles that are unknown to me. But in this video, it’s more likely to be radium undergoing alpha decay. That’s what compasses were like many years ago. Be careful with them.

@jurij0001

143,706 görüntüleme • 3 gün önce

Coffee with mineral water becomes a viral trend The new drink — coffee with mineral water — has quickly gained popularity online, with claims that it boosts energy more effectively than any energy drink. The secret is that the mineral water helps caffeine absorb faster, while also replenishing magnesium and calcium lost due to coffee. The recipe is simple: a glass with ice, mineral water, a shot of espresso, a pinch of salt, and a bit of lime juice.

Coffee with mineral water becomes a viral trend The new drink — coffee with mineral water — has quickly gained popularity online, with claims that it boosts energy more effectively than any energy drink. The secret is that the mineral water helps caffeine absorb faster, while also replenishing magnesium and calcium lost due to coffee. The recipe is simple: a glass with ice, mineral water, a shot of espresso, a pinch of salt, and a bit of lime juice.

NEXTA

997,081 görüntüleme • 5 ay önce

This is real footage of the most dangerous object ever created by human beings. The Elephant’s Foot at Chernobyl is one of the most dangerous things ever created. A deadly mass formed during the 1986 nuclear meltdown. When the reactor exploded, molten nuclear fuel, concrete, steel, and sand fused together into a boiling, lava-like blob that eventually cooled into a solid mound. Its wrinkled, drooping shape gave it the nickname “Elephant’s Foot.” At first, standing near it for even a few minutes meant certain death due to extreme radiation levels. Though it has weakened over time, the Elephant’s Foot remains a haunting symbol of the disaster — a reminder of how powerful, unpredictable, and destructive nuclear energy can be when things go wrong.

This is real footage of the most dangerous object ever created by human beings. The Elephant’s Foot at Chernobyl is one of the most dangerous things ever created. A deadly mass formed during the 1986 nuclear meltdown. When the reactor exploded, molten nuclear fuel, concrete, steel, and sand fused together into a boiling, lava-like blob that eventually cooled into a solid mound. Its wrinkled, drooping shape gave it the nickname “Elephant’s Foot.” At first, standing near it for even a few minutes meant certain death due to extreme radiation levels. Though it has weakened over time, the Elephant’s Foot remains a haunting symbol of the disaster — a reminder of how powerful, unpredictable, and destructive nuclear energy can be when things go wrong.

Today In History

11,166 görüntüleme • 4 ay önce

$🚨UNIPHICS NEWS🚨: Light doesn’t slow down in glass — time does. And that explains every rainbow you’ve ever seen 🧨 For centuries, we’ve been taught that light slows down when it enters glass, water, or any transparent material, and that this slowing causes refraction and the splitting of colors in rainbows and prisms. The refractive index is treated as a material property, and photons are pictured as particles mysteriously changing speed inside matter. Uniphics offers a much cleaner and more fundamental picture. Light is a propagating spin-wave mode in the ξM-field. When this wave enters a material like glass, the material increases the local energy density. Because time flow is directly tied to energy density (t_flow = k / E_d), time flows more slowly inside the glass than in air. The spin-wave pattern of light therefore takes longer to advance through the region of slower time flow. This change in the rate of time progression across the boundary causes the wave to bend — exactly what we observe as refraction. Different wavelengths (colors) interact slightly differently with the energy-density environment, so they bend by different amounts, creating rainbows. Nothing actually slows down in the classical sense. The wave simply experiences a different rate of time flow inside the material. The same principle that explains gravitational lensing also explains ordinary lenses and rainbows. This turns one of the most familiar phenomena in optics into a direct consequence of variable time flow caused by energy density gradients. How might realizing that refraction and rainbows are caused by local changes in time flow rather than photons slowing down change the way we think about light, materials, or the design of new optical technologies? A Theory of Everything should be able to answer everything. Uniphics Explained Simply PDF: Chapters 1–10 free: Grokipedia #Uniphics #Refraction #Rainbows #TimeFlow #Light Grok xAI$

🚨UNIPHICS NEWS🚨: Light doesn’t slow down in glass — time does. And that explains every rainbow you’ve ever seen 🧨 For centuries, we’ve been taught that light slows down when it enters glass, water, or any transparent material, and that this slowing causes refraction and the splitting of colors in rainbows and prisms. The refractive index is treated as a material property, and photons are pictured as particles mysteriously changing speed inside matter. Uniphics offers a much cleaner and more fundamental picture. Light is a propagating spin-wave mode in the ξM-field. When this wave enters a material like glass, the material increases the local energy density. Because time flow is directly tied to energy density (t_flow = k / E_d), time flows more slowly inside the glass than in air. The spin-wave pattern of light therefore takes longer to advance through the region of slower time flow. This change in the rate of time progression across the boundary causes the wave to bend — exactly what we observe as refraction. Different wavelengths (colors) interact slightly differently with the energy-density environment, so they bend by different amounts, creating rainbows. Nothing actually slows down in the classical sense. The wave simply experiences a different rate of time flow inside the material. The same principle that explains gravitational lensing also explains ordinary lenses and rainbows. This turns one of the most familiar phenomena in optics into a direct consequence of variable time flow caused by energy density gradients. How might realizing that refraction and rainbows are caused by local changes in time flow rather than photons slowing down change the way we think about light, materials, or the design of new optical technologies? A Theory of Everything should be able to answer everything. Uniphics Explained Simply PDF: Chapters 1–10 free: Grokipedia #Uniphics #Refraction #Rainbows #TimeFlow #Light Grok xAI

Paul Maley

26,426 görüntüleme • 2 ay önce

In a world that often feels divided, one man steps forward with nothing but a smile, a beating heart, and the Stars and Stripes in his hands. Shirtless and full of purpose, Teag “Pure Joy” McCoy runs through the streets, waving the American flag high as music swells and his energy radiates pure, unfiltered joy. Each stride is deliberate. Each wave of the flag is a reminder. This isn’t just a run—it’s a movement. A call to something deeper. A simple, powerful act of love for country, for neighbors, and for the values that bind us. As the footage flows, you can almost hear the unspoken message: Imagine if more Americans felt this way about our flag.

In a world that often feels divided, one man steps forward with nothing but a smile, a beating heart, and the Stars and Stripes in his hands. Shirtless and full of purpose, Teag “Pure Joy” McCoy runs through the streets, waving the American flag high as music swells and his energy radiates pure, unfiltered joy. Each stride is deliberate. Each wave of the flag is a reminder. This isn’t just a run—it’s a movement. A call to something deeper. A simple, powerful act of love for country, for neighbors, and for the values that bind us. As the footage flows, you can almost hear the unspoken message: Imagine if more Americans felt this way about our flag.

NancyH

24,438 görüntüleme • 3 ay önce

Classic physics can't explain where the light is coming from in Sonoluminescence. It's just sound waves resonating in water, how can light be produced? Fusion. Uh oh, how can that be? It's not hot enough. The water isn't boiling and glass isn't breaking. Cavitation is a negative energy pressure, equivalent to the Casimir Effect. It must causing ions to fuse. Perhaps even fission where hydrogen breaks from the water molecules. No wonder academics won't touch sonoluminescence.

Classic physics can't explain where the light is coming from in Sonoluminescence. It's just sound waves resonating in water, how can light be produced? Fusion. Uh oh, how can that be? It's not hot enough. The water isn't boiling and glass isn't breaking. Cavitation is a negative energy pressure, equivalent to the Casimir Effect. It must causing ions to fuse. Perhaps even fission where hydrogen breaks from the water molecules. No wonder academics won't touch sonoluminescence.

Ashton Forbes

303,107 görüntüleme • 1 yıl önce

🚨 PHYSICISTS JUST SPLIT A SINGLE PHOTON AND IT TURNED INTO AN IMPROBABLE SWARM OF PARTICLES. In a striking experiment, researchers have shown that a photon can be split apart in such a way that it produces a large number of particles, creating what they describe as a “mixture from zero to infinity.” Instead of the usual clean splitting into two photons (as seen in spontaneous parametric down-conversion), this process generated a complex, broad swarm of particles. The result challenges conventional intuition about how photons behave when pushed into extreme nonlinear regimes. Why this matters: • It demonstrates a rare and complex form of photon splitting that was previously very difficult to observe cleanly • Such processes could help simulate high-energy particle physics in table-top experiments • It opens new possibilities for generating exotic quantum states of light • It provides deeper insight into nonlinear quantum electrodynamics (QED) in strong fields The deeper implication: Photons are usually thought of as indivisible quanta of light. But under the right extreme conditions, a single photon can effectively “break apart” into many particles. This isn’t just a curiosity it touches on fundamental questions about the nature of light and matter, and could eventually lead to new tools for quantum technologies and for studying physics that normally requires particle accelerators. We’re seeing light behave in ways that blur the line between a single quantum and a many-particle system. How do you think being able to controllably split photons into swarms of particles could impact quantum optics or fundamental physics research? Follow for more frontier quantum physics and breakthroughs in light-matter interaction.

🚨 PHYSICISTS JUST SPLIT A SINGLE PHOTON AND IT TURNED INTO AN IMPROBABLE SWARM OF PARTICLES. In a striking experiment, researchers have shown that a photon can be split apart in such a way that it produces a large number of particles, creating what they describe as a “mixture from zero to infinity.” Instead of the usual clean splitting into two photons (as seen in spontaneous parametric down-conversion), this process generated a complex, broad swarm of particles. The result challenges conventional intuition about how photons behave when pushed into extreme nonlinear regimes. Why this matters: • It demonstrates a rare and complex form of photon splitting that was previously very difficult to observe cleanly • Such processes could help simulate high-energy particle physics in table-top experiments • It opens new possibilities for generating exotic quantum states of light • It provides deeper insight into nonlinear quantum electrodynamics (QED) in strong fields The deeper implication: Photons are usually thought of as indivisible quanta of light. But under the right extreme conditions, a single photon can effectively “break apart” into many particles. This isn’t just a curiosity it touches on fundamental questions about the nature of light and matter, and could eventually lead to new tools for quantum technologies and for studying physics that normally requires particle accelerators. We’re seeing light behave in ways that blur the line between a single quantum and a many-particle system. How do you think being able to controllably split photons into swarms of particles could impact quantum optics or fundamental physics research? Follow for more frontier quantum physics and breakthroughs in light-matter interaction.

TheNewPhysics

25,874 görüntüleme • 2 ay önce

A Bird, a Beak, and the Breath of Dawn. There’s something magical about catching the sunrise through the semi translucent beak of a bird. It’s not just a moment, it’s a lesson in the beauty of light itself. The beak glows gold, the water behind it shimmers like scattered diamonds, and the bird becomes bathed in warm highlights. It doesn’t happen every day, but when it does, it’s pure magic.

A Bird, a Beak, and the Breath of Dawn. There’s something magical about catching the sunrise through the semi translucent beak of a bird. It’s not just a moment, it’s a lesson in the beauty of light itself. The beak glows gold, the water behind it shimmers like scattered diamonds, and the bird becomes bathed in warm highlights. It doesn’t happen every day, but when it does, it’s pure magic.

Mark Smith Photography

10,514 görüntüleme • 1 yıl önce

The resurrection body, in my opinion, is actually a body made of pure energy—a plasma body, or a body made of the fourth state of matter—which interacts strongly with electromagnetic energy. This body can then appear in any form it wants, as it can manipulate electromagnetic waves and our perception. God came in a physical, material body to show you the way to achieve transfiguration and the heavenly, immortal body. Jesus showed you the way, and that way can be found in every religion, hidden in plain sight.

The resurrection body, in my opinion, is actually a body made of pure energy—a plasma body, or a body made of the fourth state of matter—which interacts strongly with electromagnetic energy. This body can then appear in any form it wants, as it can manipulate electromagnetic waves and our perception. God came in a physical, material body to show you the way to achieve transfiguration and the heavenly, immortal body. Jesus showed you the way, and that way can be found in every religion, hidden in plain sight.

Open Minded Approach

19,022 görüntüleme • 22 gün önce

🚨 BREAKING: Scientists just made topology visible in a spinning fluid. Not in a quantum computer. Not in a particle collider. In water. By sending standing waves through a vortex, researchers watched quantized nodal lines appear across the whole system lines where the wave amplitude drops to zero. Why that matters: → It’s a fluid analogue of the Aharonov–Bohm effect → The response is non-local → Topology didn’t stay near the core… it shaped the entire wave field That’s the deeper point: Physics isn’t always hidden in particles. Sometimes it shows up as structure in motion. If wave topology can be seen this clearly in fluids, what else in quantum physics might be hiding in plain sight? Follow me for the next wave of physics breakthroughs.

🚨 BREAKING: Scientists just made topology visible in a spinning fluid. Not in a quantum computer. Not in a particle collider. In water. By sending standing waves through a vortex, researchers watched quantized nodal lines appear across the whole system lines where the wave amplitude drops to zero. Why that matters: → It’s a fluid analogue of the Aharonov–Bohm effect → The response is non-local → Topology didn’t stay near the core… it shaped the entire wave field That’s the deeper point: Physics isn’t always hidden in particles. Sometimes it shows up as structure in motion. If wave topology can be seen this clearly in fluids, what else in quantum physics might be hiding in plain sight? Follow me for the next wave of physics breakthroughs.

TheNewPhysics

24,005 görüntüleme • 4 ay önce

FRUIT and VEGETABLES contain 'structured water', a PLASMA phase (light). Capturing SUNLIGHT, they store this energy as 'nutrients', emitting subtle BIOPHOTONS,(light) a reflection of their 'vitality'. Consuming these LIVING foods integrates this 'life force' into our bodies. Does the PLASMA effect seen in 'microwaved' grapes demonstrate this incredible ENERGY... a reminder of the LIFE within fresh, LIVING, natural, organic foods? PLASMA... 4th phase of WATER. "When you put two grapes in microwave, the water molecules inside vibrate and heat up quickly due to their high water content. If the grapes are close together, the electrolytes create a conductive path, concentrating energy. this can ionize the air between them, forming plasma and creating sparks."

FRUIT and VEGETABLES contain 'structured water', a PLASMA phase (light). Capturing SUNLIGHT, they store this energy as 'nutrients', emitting subtle BIOPHOTONS,(light) a reflection of their 'vitality'. Consuming these LIVING foods integrates this 'life force' into our bodies. Does the PLASMA effect seen in 'microwaved' grapes demonstrate this incredible ENERGY... a reminder of the LIFE within fresh, LIVING, natural, organic foods? PLASMA... 4th phase of WATER. "When you put two grapes in microwave, the water molecules inside vibrate and heat up quickly due to their high water content. If the grapes are close together, the electrolytes create a conductive path, concentrating energy. this can ionize the air between them, forming plasma and creating sparks."

WhatdoIknow

64,605 görüntüleme • 1 yıl önce

Keep seeking the light. I know it can be hard, but a light exists in all of us. Even in dark times, we must believe that there is goodness, that the light will come again. Even the act of believing, the act of seeing the light in others, is a way of having hope and moving humanity forward. #sundaypaperreflection

Keep seeking the light. I know it can be hard, but a light exists in all of us. Even in dark times, we must believe that there is goodness, that the light will come again. Even the act of believing, the act of seeing the light in others, is a way of having hope and moving humanity forward. #sundaypaperreflection

Maria Shriver

41,807 görüntüleme • 7 ay önce

Fireflies glow. So does plankton in a breaking wave. Both come from the same small molecule: a square of two carbon and two oxygen atoms that breaks apart and gives off light. Researchers at Stanford found that if you pull on that square instead of heating it, it breaks in the opposite order from what everyone expected. The carbon bond goes first, then the oxygen. It still emits light, just by a route nobody knew was there. That opens the door to materials that glow to warn you before they crack. We made the animation for the press release: This animation shows a pulling force, indicated by arrows, applied to a molecule of bis(adamantly)-1,2-dioxetane. The strain breaks the carbon–carbon bond (in gray) of the core structure. Then, the oxygen - oxygen bond (in red) breaks, causing a remaining piece to become unstable and emit a photon of blue light to return to a more stable state. If you have a result that needs showing, we'd be glad to help. Read more:

Fireflies glow. So does plankton in a breaking wave. Both come from the same small molecule: a square of two carbon and two oxygen atoms that breaks apart and gives off light. Researchers at Stanford found that if you pull on that square instead of heating it, it breaks in the opposite order from what everyone expected. The carbon bond goes first, then the oxygen. It still emits light, just by a route nobody knew was there. That opens the door to materials that glow to warn you before they crack. We made the animation for the press release: This animation shows a pulling force, indicated by arrows, applied to a molecule of bis(adamantly)-1,2-dioxetane. The strain breaks the carbon–carbon bond (in gray) of the core structure. Then, the oxygen - oxygen bond (in red) breaks, causing a remaining piece to become unstable and emit a photon of blue light to return to a more stable state. If you have a result that needs showing, we'd be glad to help. Read more:

Ella Marushchenko

23,138 görüntüleme • 28 gün önce

🎥 + 💭: sinothando "There’s something almost unreal about thresher sharks. 🦈 That impossibly long tail, the slow and graceful way they move through the blue. It looks like an animal from somewhere else. Seeing one takes patience. They spend most of their time deep, and the encounters happen early, before sunrise, at cleaning stations on seamounts where they rise up to get worked over by wrasse. You get in the water in the dark and you wait. And for all that presence, a thresher is shy. They spook easily, they keep their distance, and they pose no threat to a diver. What they do matter to is the reef itself. Predators like this keep the whole system in balance. A quiet reminder that the most extraordinary animals are usually the most misunderstood." #MarineMonday #ThresherShark

🎥 + 💭: sinothando "There’s something almost unreal about thresher sharks. 🦈 That impossibly long tail, the slow and graceful way they move through the blue. It looks like an animal from somewhere else. Seeing one takes patience. They spend most of their time deep, and the encounters happen early, before sunrise, at cleaning stations on seamounts where they rise up to get worked over by wrasse. You get in the water in the dark and you wait. And for all that presence, a thresher is shy. They spook easily, they keep their distance, and they pose no threat to a diver. What they do matter to is the reef itself. Predators like this keep the whole system in balance. A quiet reminder that the most extraordinary animals are usually the most misunderstood." #MarineMonday #ThresherShark

Discovery

69,559 görüntüleme • 21 gün önce