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Researchers in the United States have made a detailed study of a small number of small glass spheres found in the sand of beaches near Hiroshima, where an atomic bomb was dropped during World War II, and they have concluded that there is only one possible explanation for its origin: the nuclear explosion.
Mario Wannier, a retired geologist, was ordering collected sand samples to see if they could help him assess the health of local and regional marine ecosystems in the Ujina peninsula at the end of the Hiroshima port, when he observed ‘strange particles’ of up to one millimeter wide.
Some seemed to be fused, others had ‘tail-like characteristics’, several were similar to meteor impacts, and others were much less familiar. Among them were particles with a composition similar to rubber or with a variety of materials coated in one layer or several layers of glass or silica.
Intrigued, Wannier visited the area to obtain more samples and discovered that each kilogram of sand contained between 12.6 and 23.3 grams of spheroids. This represents 0.6 and 2.5 percent of all grains examined.
These high concentrations on the beaches near Hiroshima raised their suspicions that they were related to the explosion of the atomic bomb on August 6, 1945, which destroyed or damaged 90 percent of the structures in the city and killed around 145 thousand people.
The next stage was to take selected samples for Berkeley’s Advanced Light Source Laboratory (ALS). The experiments and analyzes related determined that the particles had formed in extreme conditions, with temperatures exceeding 1800 degrees Celsius.
The ALS staff scientist, Nobu Tamura, points out that the unique microstructure of the particles studied and the large volume of fusion residues present also provide strong evidence of how they were formed.
The researchers found that the composition of the particles contained elements common to Hiroshima during the bombing, such as concrete, marble, stainless steel and rubber.
Other studies have analyzed melted debris from the Trinity test site in New Mexico, where the first nuclear explosion was unleashed, and from underground nuclear test sites in Nevada.
These samples have a different composition. The Trinity ore has been dubbed trinitite, and researchers in the latest study have dubbed the molten particles studied as Hiroshimaite to highlight its distinctive features and its possible origin in the bombing of Hiroshima .
Wannier suggests that someone can investigate around Nagasaki, the other Japanese city destroyed by nuclear attacks, to find something similar to Hiroshimaita.
La Neta noticias