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An illustration of the relative abilities of three different types of ionizing radiation to penetrate solid matter. Typical alpha particles (α) are stopped by a sheet of paper, while beta particles (β) are stopped by 3mm aluminum foil. Gamma radiation (γ) is dampened when it penetrates lead. Note caveats in the text about this simplified diagram.[clarification needed]

放射線とは何か？電磁波と粒子線の種類から人体への影響までを解説

放射線電磁波電離放射線非電離放射線
2026年8月11日続きを読む →