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🚨#BREAKING: Workers at a former U.S. nuclear site has found a radioactive wasp nest with radiation levels 10 times above federal limits 📌#Columbia | #SouthCarolina Workers at a former nuclear weapons site in Columbia, South Carolina, discovered a radioactive wasp nest, according to the U.S. Department of Energy. On...

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Madain Saleh, also known as Al-Hijr, is a pre-Islamic archaeological site located in the northwest of Saudi Arabia. It is one of the most important archaeological sites in the Middle East and was designated as a UNESCO World Heritage site in 2008. Madain Saleh is a place of great historical and cultural significance, and it is a must-visit destination for anyone interested in the history and culture of the Arabian Peninsula. Madain Saleh was the second city of the Nabataean kingdom, which was established in 2nd Century BC. The Nabataeans were an Arab tribe who were known for their expertise in carving tombs and buildings out of rock. They were also skilled in agriculture, trade, and commerce. The Nabataean kingdom was centered in Petra, which is located in modern-day Jordan. Madain Saleh served as a strategic outpost for Nabataeans, and it was an important stop on the trade routes that connected the Arabian Peninsula with the Mediterranean world. Archaeological site of Madain Saleh covers an area of 13 square kilometers. It is located in a remote desert region, and it is surrounded by rocky mountains and valleys. The site contains around 130 tombs, which were carved out of the sandstone cliffs. The tombs are adorned with intricate carvings and inscriptions, which provide insights into the culture and religion of the Nabataeans. The most famous tomb at Madain Saleh is the Qasr Al-Farid, which means "the lonely castle." This tomb is located on a hilltop and is surrounded by a large courtyard. It is the largest tomb at the site, and it is considered to be one of the finest examples of Nabataean architecture. The tomb was never completed, and it is believed that it was abandoned after the death of the Nabataean king who commissioned it. Another important tomb at Madain Saleh is the Tomb of Lihyan son of Kuza. This tomb is located in the southern part of the site and is carved into a rock cliff. It features a large entrance hall, a central chamber, and a series of smaller rooms. The tomb is decorated with intricate carvings and inscriptions, which provide insights into the religious beliefs of Nabataeans. Madain Saleh is not just a site of tombs; it also contains a number of other important structures. These include the Al-Khuraymat and Al-Sabika temples, which were used for religious ceremonies and rituals. The site also contains a number of houses, wells, and cisterns, which provide insights into the daily lives of the Nabataeans. Madain Saleh was abandoned in the 3rd Century AD, after decline of the Nabataean kingdom. The site was rediscovered in the 19th Century by the Swiss traveler Johann Ludwig Burckhardt. Since then, it has been studied by archaeologists from all over the world. The site is now managed by the Saudi Commission for Tourism and National Heritage, which has carried out extensive restoration and preservation work. Madain Saleh is not just a site of historical and cultural significance; it is also a place of great natural beauty. The site is surrounded by rugged mountains and valleys, and it is home to a diverse range of flora and fauna. Visitors to the site can enjoy hiking and camping, as well as exploring the ancient ruins. Madain Saleh is a site of great historical and cultural significance, and it is a must-visit destination for anyone interested in the history and culture of the Arabian Peninsula. Ancient ruins at Madain Saleh provide a glimpse into the engineering and architectural skills of the Nabataeans, as well as their religious beliefs and cultural practices. However, as the site becomes an increasingly popular tourist destination, there are concerns about its preservation and the impact of tourism on the local environment. It is important that the Saudi government and local communities work together to ensure that the site is protected and that tourism is managed in a sustainable way. 🎥© Paris Verra #archaeohistories

Archaeo - Histories

196,549 次观看 • 2 年前

🚨 ITALY IS ABOUT TO GENERATE ELECTRICITY FROM A FULL-SCALE NUCLEAR REACTOR THAT HAS ZERO NUCLEAR FUEL INSIDE IT. At the ENEA Brasimone research center, Newcleo has installed a 155-ton reactor vessel filled with molten lead. Instead of uranium, it uses electric heaters to simulate the heat from fission. The lead will circulate, transfer heat to a steam generator, and spin a real turbine to produce electricity. This is not a small lab experiment. The vessel is nearly the same size as the commercial 200 MW lead-cooled reactor Newcleo eventually wants to sell. Why this matters: • It’s one of the most complete non-nuclear demonstrations of a next-generation reactor ever attempted • By proving the molten lead cooling system, heat exchangers, and power conversion loop work at scale before introducing nuclear fuel, Newcleo is trying to de-risk the hardest and most expensive parts of advanced nuclear development • Lead-cooled fast reactors can operate at atmospheric pressure with high thermal margins and natural circulation decay heat removal • The company has ambitious plans, including partnerships in the US (with Oklo) to use surplus weapons plutonium as fuel The deeper implication: Traditional nuclear development is extremely slow and expensive because you have to deal with radiation, fuel, and regulatory scrutiny from day one. Newcleo’s approach flips this: prove the entire non-nuclear “machine” works first at near-commercial scale, then add the nuclear part later. If successful, this could meaningfully shorten development timelines and reduce technical risk for lead-cooled reactors. It’s still early the real fueled reactor isn’t expected until the early 2030s but this is one of the more serious and well-funded attempts to make a new type of advanced nuclear a commercial reality. How important do you think non-nuclear full-scale testing like this will be for accelerating advanced reactor deployment? Follow for more frontier nuclear technology and next-generation reactor development.

TheNewPhysics

256,933 次观看 • 2 个月前

Facial reconstruction of a 2,900-year-old elite from Hasanlu, Iran The people of Iron Age Hasanlu were genetically a mixture of Zagrosians, Upper Mesopotamians, and Proto-Armenics. Hasanlu is an archaeological site of an ancient city located in northwest Iran, in the province of West Azerbaijan, just south of Lake Urmia. The settlement was likely associated with the Mannaeans, a Hurro-Urartian people with a possible Indo-European substrate related to the Armenic branch. The site is most famous for its catastrophic destruction. At the end of the 9th century BC, Hasanlu was violently sacked and burned, preserving a single moment in time, much like Pompeii. Buildings, artifacts, and even human remains were sealed beneath layers of ash and collapsed debris. The attackers were most likely the Urartians. Excavations uncovered the remains of more than 285 people, many of them slain in battle or executed afterward. Several bodies showed signs of mutilation, while the positioning of others revealed desperate attempts to escape. Among the thousands of objects discovered in situ were weapons, ornaments, and household items, all abandoned in the chaos. This destruction layer, known as Hasanlu IVb, stands as one of the most important archaeological contexts of the early Iron Age Near East. Following the devastation, the city’s High Mound was repurposed as the site of a Urartian fortress. The man was laid on his back beneath a hypogeum wall, head west, facing south with flexed legs. He had Rich grave goods - bronze and iron weapons, an iron armlet, jewelry, a decorated bronze belt, and ceramic vessels, indicating a high-status individual. The style of his belt and ornaments links his material culture to the South Caucasus and early Urartian cultural sphere, showing close artistic and technological connections between these regions around 900–850 BCE. Reconstruction commissioned by 𒁍𒊑 𒋗𒊑𒌍 Buri Šoreš 𓄂❤️☀️💚

Ancestral Whispers

24,939 次观看 • 9 个月前

🚨 THE ENERGY TECHNOLOGY THAT COULD POWER CIVILIZATION FOR THE NEXT 100 YEARS ISN'T FUSION. Molten Salt Reactors use molten fluoride or chloride salts as coolant and in some designs, the nuclear fuel itself is dissolved directly into that salt. This is very different from traditional reactors. Instead of solid fuel rods sitting in water under high pressure, these systems run at much higher temperatures but at atmospheric pressure, which dramatically reduces the risk of explosions or meltdowns. The salt can flow over solid fuel, or the fuel can be mixed directly into the coolant. Both approaches are being actively developed. Why this matters: • MSRs operate at high temperatures, making them potentially much more efficient at generating electricity and process heat • Low-pressure operation makes them inherently safer than conventional water-cooled reactors • Some designs can burn existing nuclear waste or use thorium as fuel • The technology could support everything from advanced power generation to hydrogen production and industrial heat The deeper implication: For decades, nuclear power has been dominated by one basic design concept. Molten salt reactors represent a fundamental rethink using a liquid that can act as both coolant and fuel. This opens the door to reactors that are safer, more flexible, and potentially capable of solving some of nuclear energy’s biggest historical challenges (waste, fuel efficiency, and public perception of safety). While still in development, MSRs are one of the most promising pathways for next-generation nuclear power. We may be looking at the early stages of a genuinely new chapter in how humanity generates clean, reliable energy. Do you think molten salt reactors will become a major part of the future energy mix, or will traditional designs continue to dominate? Follow for more frontier energy technology and next-generation nuclear systems.

TheNewPhysics

72,943 次观看 • 2 个月前

On the Oreshnik and the eternal question about the warhead There is a particular type of commentator who, after every Oreshnik strike, routinely asks the same question. Was there even a warhead in it this time? The question is meant to suggest that the weapon, without a classical explosive payload, is somehow fake or less dangerous. What it really reveals is that the person asking does not understand how the system works. A conventional ballistic missile carries explosives or a nuclear warhead. The destruction comes from the detonation at the target. The missile is essentially the delivery service. The Oreshnik works differently. It is an intermediate-range missile (range around 5000 kilometers) carrying multiple independently targetable reentry vehicles (MIRV). These reentry vehicles enter the atmosphere at roughly Mach 10 to Mach 12, with Russian sources claiming higher in some cases. That works out to 3 to 3.5 kilometers per second on terminal approach. This is where the physics comes in. Kinetic energy is calculated as E = 0.5 times mass times velocity squared. Velocity enters the equation as a square. A reentry vehicle of a few hundred kilograms, on impact alone, releases energy in the range of several tons of TNT equivalent. With multiple submunitions per missile, that adds up. A tungsten or steel core entering the ground at this speed produces temperatures of several thousand degrees through friction and compression shock. Bunkers and hardened installations are not destroyed by an explosion, they are destroyed by the sheer force and heat of the impact itself. The technical term is kinetic penetration. Now to the actual answer for the warhead-askers. Yes, the Oreshnik is nuclear-capable. This was part of the design from the start, not a retrofit, but a built-in configuration option. Russian officials have stated this openly. The carrier is there. The only question is what it carries. But that is exactly the point the warhead-asker skips over. The whole point of the Oreshnik is that even in its conventional configuration it achieves an effect that previously required nuclear weapons against hardened targets. To destroy an underground command bunker, historically you needed a small tactical nuclear weapon. Today a reentry vehicle at Mach 10 with a few hundred kilograms of mass is enough. No radioactive fallout, no crossing of the nuclear threshold, no political price attached to a nuclear use. In a strike on a major city, the nuclear configuration would, in this conflict, almost certainly not be deployed. Not because it does not exist, but because it is neither necessary nor politically tenable for that purpose. The conventional version is sufficient to send a message without crossing the threshold above which entirely different chains of escalation are set in motion. In short. The question "was there a warhead in it?" misses the point. The Oreshnik does not need a large warhead, because its velocity is the weapon. It can carry a nuclear warhead, at any time. It just does not do so in the current conflict, because it does not have to.

Zlatti71

36,837 次观看 • 3 个月前

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 次观看 • 7 个月前

🚨 A MAJOR STEP FOR ADVANCED NUCLEAR: TERRESTRIAL ENERGY SECURES 77-ACRE SITE IN TEXAS FOR MOLTEN SALT REACTOR TESTING. Terrestrial Energy has signed agreements to use a large site at the Texas A&M-RELLIS campus to prepare for testing its Integral Molten Salt Reactor (IMSR) a Generation IV small modular reactor design. Unlike traditional nuclear plants that use solid fuel rods and high-pressure water, this design dissolves low-enriched uranium directly into a liquid salt mixture that acts as both fuel and coolant. Why this matters: • The reactor can cool itself through natural air circulation if power is lost no need for backup pumps • It operates at normal atmospheric pressure, significantly reducing the risk of containment failure • Major components can be factory-built and shipped to site, speeding up construction • The company recently passed key NRC safety evaluations and has a deal to study powering large-scale data centers (up to 4 GW) The deeper implication: As AI and data centers drive massive new electricity demand, there’s growing interest in reliable, always-on, low-carbon power sources that can be deployed faster than traditional large reactors. Molten salt designs like this one offer inherent safety advantages and factory production potential that could help nuclear compete in this new market. Securing a dedicated testing site is a concrete sign that this technology is moving from paper studies toward real-world validation. How important do you think advanced nuclear (like molten salt reactors) will be for powering the AI boom compared to renewables + storage? Follow for more frontier energy and next-generation nuclear technology.

TheNewPhysics

26,714 次观看 • 2 个月前