The first visible sample of plutonium is found in the UCLA repository

A rather interesting find was made by experts at the University of California at Berkeley . Scientists have discovered the first ever visible sample of weapons-grade plutonium, and this sample was placed in the repository of hazardous substances of the university. The discovered plutonium was created as part of the Manhattan project . The project was led by a renowned physicist, Professor Robert Oppenheimer.

Plutonium was created by a group of scientists headed by chemist Glenn Seaborg. The successful synthesis of plutonium later allowed Seaborg to receive the Nobel Prize in Chemistry (in 1951). Synthesized plutonium is one of the milestones in the creation of the atomic bomb used in World War II.

This plutonium sample is the first large enough to determine the mass. In addition, the sample can be seen with the eye (albeit with a magnifying glass). The weight of this sample is only 2.7 micrograms. By the way, from 1979 to 2007, the sample was exhibited at the Berkeley Lawrence Hall of Science. Then he was removed when the room was updated, and, as far as can be understood, lost.
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Only now the sample was discovered , and scientists are thinking about placing it in its original place. It is worth noting that the sample is too small to cause harm to human health, so that visitors can safely admire the product of the mind and hands of humans.