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Nuclear Fallout

All articles tagged with #nuclear fallout

science1 month ago•6 min saved

Hiroshima Blast Forges Unprecedented Alloy in Microscopic Fallout

Researchers led by Luca Bindi of the University of Florence identified a previously unknown metallic alloy within microscopic glass particles, known as hiroshimaites, recovered from Hiroshima Bay. The 15-kiloton Little Boy bomb detonated on August 6, 1945, created a fireball exceeding 7,000 °C, vaporizing and mixing diverse materials before rapid cooling froze them into unique structures. Analysis of 34 samples revealed a 10-micrometer grain containing iron, chromium, silicon, nickel, molybdenum, manganese, and aluminum. Unlike standard steel, this grain possesses a complex AlAu₄-type crystal structure derived from beta-manganese, which does not match known industrial alloys. The findings, published in Science Advances, suggest that nuclear explosions create rare metastable materials that are difficult to replicate in laboratories.

via ScienceAlert|

#hiroshima #luca-bindi #materials-science

science2 years ago•3 min saved

Uncovering Clues to Solar System Formation in Hiroshima's Nuclear Fallout

Scientists have analyzed fallout debris from the 1945 atomic bomb blast in Hiroshima and discovered glassy spheres formed by condensation within the nuclear fireball. The chemical and isotopic composition of these "Hiroshima glasses" bears similarities to primitive meteorites, suggesting they may provide insights into the early Solar System's formation. The study's simulations revealed how different types of glass condensed from the blast's extreme heat, offering a potential window into the chemical reactions during condensation in the early Solar System.

via ScienceAlert|

#condensation #glassy-spheres #hiroshima

science-and-technology2 years ago•0 min saved

"Hiroshima Glasses Uncover Fresh Perspectives on Nuclear Fallout"

Decades after the atomic bombing of Hiroshima, researchers have discovered unusual fallout detritus known as Hiroshima glasses in Hiroshima Bay, shedding new light on the aftermath of the catastrophic nuclear incident and providing fresh insights into the vaporized materials of the bomb and the surrounding landscape.

via Interesting Engineering|

#artifacts #atomic-bombing #hiroshima

environment3 years ago•3 min saved

The Impact of Human Activities: From Nuclear Fallout to Microplastics

Scientists argue that humans have significantly transformed the planet, entering a new geological epoch called the Anthropocene. Evidence of human influence includes soaring greenhouse gases, microplastics, "forever chemicals," and the global disruption of animals. The Anthropocene Working Group is expected to announce the epoch's "golden spike" location, representing the most significant changes caused by humans. The surge in carbon dioxide and other greenhouse gases is a major indicator, along with the reshuffling of species and the proliferation of technofossils. However, the only place on Earth relatively untouched by human influence is likely under the ice in Antarctica, which is at risk of melting due to global warming.

via Barron's|

#anthropocene #climate-change #environment

science3 years ago•5 min saved

"Uncovering Earth's History through Nuclear Fallout"

Nuclear fallout from a bomb can stay in the atmosphere for years and can settle back to the ground, poisoning it in the process. Fallout raining from the sky is just one way people are exposed — food is another common culprit. Radioactive fallout has been found in the muscle tissue of sea creatures that inhabit the deepest ocean trenches.

via Business Insider|

#atmospheric-contamination #nuclear-fallout #nuclear-physicist