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When two similar atomic layers with mismatching lattice constants — the constant distance between a layer’s unit cells — and/or orientation are stacked together, the resulting bilayer can exhibit a moiré pattern and form a moiré superlattice. Moiré patterns are interference patterns that typically arise when one object with a...
“What are you … on their side?” The comment was one of many snarky remarks white teachers made about interactions between a Latino colleague and his diverse student population. In the staff lounge at the Sacramento, Calif., public school, the same teachers called the students “monkeys bouncing off the walls”...
Beginning around 1990, the demographic landscape of the Los Angeles area changed dramatically through an infusion of immigrants from Mexico and Central America. But historian Jorge Leal says its impact on the neighborhoods of the Los Angeles area has never been charted in earnest. With his recently published research, Leal...
Daryle Williams is a historian who co-directs the online database Enslaved.org.
