{"id":20262,"date":"2026-09-22T00:07:07","date_gmt":"2026-09-21T14:07:07","guid":{"rendered":"https:\/\/geoffreychen.com\/why-the-edge-of-a-shadow-is-often-blurred\/"},"modified":"2026-09-22T00:07:07","modified_gmt":"2026-09-21T14:07:07","slug":"why-the-edge-of-a-shadow-is-often-blurred","status":"publish","type":"post","link":"https:\/\/geoffreychen.com\/zh\/why-the-edge-of-a-shadow-is-often-blurred\/","title":{"rendered":"\u5f71\u5b50\u7684\u8fb9\u7f18\u4e3a\u4ec0\u4e48\u5e38\u6709\u4e00\u5708\u6a21\u7cca\uff1f"},"content":{"rendered":"<\/p>\n

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https:\/\/science.nasa.gov\/eclipses\/geometry\/<\/a>
https:\/\/hyperphysics.phy-astr.gsu.edu\/hbase\/geoopt\/shad.html<\/a><\/p>\n

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