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Physics
Plain-language explainers about physics, written to make useful context easier to find and understand.
Browse articles that connect physics to technology, health, infrastructure, money, science, and everyday decisions.
Apr 2026Mar 2026
How a Nuclear Reactor Works, Without the Jargon
Nuclear power generates 10% of the world's electricity. Most people have a vague and often inaccurate picture of what happens inside a reactor. Here's the real version.
How GPS Actually Works — And Why It Depends on Einstein
Your phone knows where it is within a few meters using signals from satellites 20,000 km away. The system only works because of corrections predicted by general relativity.