Solids are generally divided into three broad classes— crystalline, noncrystalline (amorphous), and quasicrystalline. Crystalline solids have a very high degree of order in a periodic atomic arrangement.

The two primary categories into which solids are classified are crystalline solids and amorphous solids. The former features a highly ordered arrangement of atoms in three-dimensional space whereas the latter features a network of interconnected structural blocks.

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CNN: How the Supreme Court could wind up scrapping high-profile precedents in coming months

The Supreme Court’s landmark opinion on same-sex marriage isn’t the only high-profile precedent the justices will have an opportunity to tinker with – or entirely scrap – when the court reconvenes ...