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This rock glows Most sodalite will fluoresce orange under UV light Electromagnetic radiation (light from the UV flashlight) is absorbed which then re-emits radiation at a longer wavelength – in this case, the yellow glow

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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
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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

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The 1.9 X-flare from earlier today is still in-progress, categorizing this as a long-duration event. The Americas were just hit with A TON of light radiation!
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The 1.9 X-flare from earlier today is still in-progress, categorizing this as a long-duration event. The Americas were just hit with A TON of light radiation!

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Black people are built differently. Sunlight acts as the primary trigger for melanin production in Black people. When UV rays penetrate your skin, melanocytes produce this pigment to shield your DNA from radiation damage.

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The Ghost of Cassiopeia: a cosmic phantom in the glow of a volatile star 👻 Located 550 light-years from Earth, the IC 63 nebula is a ghostly cloud of dust and gas. It is gradually being eroded by the intense radiation from a nearby, unpredictable star: Gamma Cassiopeiae. Autumn and winter are the best times to observe this remarkable object from the Northern Hemisphere. 🔭

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I finally got to witness a rare “green flash” for the first time! Sunlight at sunset travels thru a lot of our atmosphere, which refracts (bends) the light like a prism. The shorter wavelength violet/blue colors scatter before reaching us, while the longer red/orange colors…➡️

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🔥 Crazy advertising: this is how sunscreen is promoted in Tel Aviv Israel is one of the countries with the highest levels of solar radiation in the world. In Tel Aviv, the UV index stays extremely high almost all year round. Even locals avoid going outside without protection — the sun there is absolutely brutal.

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What female goes into the sallyport at midnight? Needs a flashlight from her friend to light up the vehicle and then touches the vehicle with no gloves on???? This video was brightened 200% from the original
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Your cat looking at you five years later after the entire global nuclear arsenal of 12,000 warheads detonated all within the same year. The enormous fires injected enough soot into the stratosphere to drastically reduce the sunlight reaching Earth, so everything now receives only a fraction of the light it once did. Because of increased exposure to ionizing radiation and UV radiation causing DNA damage and genetic mutations, you are slowly beginning to realize that your beloved companion is starting to look dramatically different from the one you once knew. With what little time you have left, you can only watch as your surviving furry friend continues to change into something you no longer recognize as them.
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Farming looks a little different from up here. 🚁 At TRIC Robotics, we’re helping farmers protect their crops with UV-light — chemical-free, efficient, and sustainable. 🍓🌱 The future of farming is bright. 💡
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Farming looks a little different from up here. 🚁 At TRIC Robotics, we’re helping farmers protect their crops with UV-light — chemical-free, efficient, and sustainable. 🍓🌱 The future of farming is bright. 💡

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FROM INBOX | Harare road users no longer obey traffic lights, which is deeply concerning as it could cost lives. The traffic lights were fully operational at the time, yet on Sunday, February 23, 2025, in Kambuzuma, this driver ran a red light. Sadly, most drivers no longer adhere to traffic signals, and we fear the day when this reckless behavior results in tragedy. Even when the light is red, only a few road users stop. This video serves as evidence of our daily reality on the roads. Zimbabwe Republic Police
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FROM INBOX | Harare road users no longer obey traffic lights, which is deeply concerning as it could cost lives. The traffic lights were fully operational at the time, yet on Sunday, February 23, 2025, in Kambuzuma, this driver ran a red light. Sadly, most drivers no longer adhere to traffic signals, and we fear the day when this reckless behavior results in tragedy. Even when the light is red, only a few road users stop. This video serves as evidence of our daily reality on the roads. Zimbabwe Republic Police

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3. The most common thing NOBODY talks about is that the only thing Sonic emits from himself is BLUE LIGHT, even in the damn videos wind glazers use is completely sidelined and ignored. Nobody complained about it with Sonic X, nobody complains about it in the modern media, INCLUDING THE BOOST. Like, cmon guys, the lightning is, most likely, a visual representation of this blue light used as an offensive visual, mostly for impact. Yall are taking this way too seriously.
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3. The most common thing NOBODY talks about is that the only thing Sonic emits from himself is BLUE LIGHT, even in the damn videos wind glazers use is completely sidelined and ignored. Nobody complained about it with Sonic X, nobody complains about it in the modern media, INCLUDING THE BOOST. Like, cmon guys, the lightning is, most likely, a visual representation of this blue light used as an offensive visual, mostly for impact. Yall are taking this way too seriously.

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Gravitational lensing, also known as an Einstein ring This occurs when the strong gravitational pull of a massive object warps spacetime around it so much that light and other forms of electromagnetic radiation are deflected from a straight path. For example, animations show how a black hole passing in front of a galaxy distorts its visible image. An object with such a powerful gravitational pull is called a gravitational lens.

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Gravitational lensing, also known as an Einstein ring This occurs when the strong gravitational pull of a massive object warps spacetime around it so much that light and other forms of electromagnetic radiation are deflected from a straight path. For example, animations show how a black hole passing in front of a galaxy distorts its visible image. An object with such a powerful gravitational pull is called a gravitational lens.
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Gravitational lensing, also known as an Einstein ring This occurs when the strong gravitational pull of a massive object warps spacetime around it so much that light and other forms of electromagnetic radiation are deflected from a straight path. For example, animations show how a black hole passing in front of a galaxy distorts its visible image. An object with such a powerful gravitational pull is called a gravitational lens.

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Incredible new study at Washington State University found Egyptian Blue emits near‑infrared light 🤯 This is a fragment of ancient Egyptian Blue paint. When researchers hit it with visible light (green, around 530–550 nm), the pigment absorbed it and re‑emitted near‑infrared light at 910–940 nm. Our eyes can’t see NIR, but a modified camera can, so the pigment looks like it’s glowing. Modern NIR‑emitting pigments are used today in anti‑counterfeiting, biomedical imaging, cooling tech, and more. In the hot sun of the Egyptian desert, if a person wore clothing painted in Egyptian Blue, they would stay cooler by radiating some of the absorbed sunlight back out as near‑infrared instead of trapping it as heat.
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Incredible new study at Washington State University found Egyptian Blue emits near‑infrared light 🤯 This is a fragment of ancient Egyptian Blue paint. When researchers hit it with visible light (green, around 530–550 nm), the pigment absorbed it and re‑emitted near‑infrared light at 910–940 nm. Our eyes can’t see NIR, but a modified camera can, so the pigment looks like it’s glowing. Modern NIR‑emitting pigments are used today in anti‑counterfeiting, biomedical imaging, cooling tech, and more. In the hot sun of the Egyptian desert, if a person wore clothing painted in Egyptian Blue, they would stay cooler by radiating some of the absorbed sunlight back out as near‑infrared instead of trapping it as heat.

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Yosemite’s Firefall waterfall This is a natural phenomenon at Horsetail Fall, which glows orange during mid to late February when sunlight hits the waterfall just right.
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Yosemite’s Firefall waterfall This is a natural phenomenon at Horsetail Fall, which glows orange during mid to late February when sunlight hits the waterfall just right.

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