Scientists once thought their structures impossible. Now, the discovery of the oldest man-made quasicrystal could expand the world of nuclear forensics.
The mushroom cloud produced by the Trinity test in Alamogordo, New Mexico, shown here just nine seconds after detonation, stretched over seven miles tall.
Scientists like Bonamici who seek to understand the components of past atomic weapons must typically analyze radioactive debris or gases, but those signatures decay comparatively quickly. A quasicrystal, however, is a permanent physical fingerprint of the conditions inside the nuclear fireball it formed within.
To accomplish this, he says, you need a tile shape whose angles equal a full 360 degrees when arranged trouble. With each interior angle measuring 108 degrees, three pentagons leave a gap and four begin to overlap.
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