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课程 10 · 年级 14+
Radiation: honest talk about exposure and hotspots
📖 课程
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🎯 测验——选择翻译
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✅ 本课已完成
Radiation is not just "Chernobyl" — natural background exists everywhere. In Germany the average is ~2 mSv per year — safe. Higher: in the Erzgebirge (old GDR uranium mines, up to 5–10 mSv); in Bavaria near granite rocks (Fichtelgebirge); while flying (+0.1 mSv per transatlantic flight). Chernobyl traces lie in Bavaria and Thuringia — mushroom picking there is officially discouraged.
- ●Radon in cellars: uplands need ventilation
- ●Medicine: CT ≈ 10 mSv = 5 years of background, X-ray ≈ 0.1 mSv
- ●The BfS site maps background radiation by district
⚡ Germany measures with "Messstationen" — a nationwide sensor network. Anyone can check online: background in your city, in real time.