相机和放映机的物距分别是什么？ 物距相距焦距三者关系
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绛旓細鐗╀綋鍒伴忛暅涓績鐨勮窛绂 鍍忕殑姝ｅ 鍍忕殑澶у皬 鍍忕殑铏氬疄 鍍忓埌閫忛暅涓績鐨勮窛绂 搴旂敤瀹炰緥鐗╄窛鍜屽儚璺濈殑鍏崇郴 u>2f 鍊掔珛 缂╁皬 瀹炲儚 2f>v>f 鐓х浉鏈 u>v u=2f 鍊掔珛 绛夊ぇ 瀹炲儚 v=2f 鍙敤鏉ユ祴閲忓嚫閫忛暅鐒﹁窛 u=v 2f>u>f 鍊掔珛 鏀惧ぇ 瀹炲儚 v>2f 鏀炬槧鏈,骞荤伅鏈,鎶曞奖鏈簎 ...
