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初中物理丨平面镜成像交互式课件

  • 2026-10-31 01:36:39
初中物理丨平面镜成像交互式课件
讲平面镜成像时，学生往往能背出“等大、等距、正立、虚像”，但再追问两句，就容易卡住：

第二支蜡烛为什么不用点燃？
明明看得见像，为什么光屏却接不到？
像到镜面的距离，应该从哪里量？

做这套交互课件时，我想把这些问题变成课堂上可以一步步操作、观察和讨论的过程。
本文来自网友投稿或网络内容，如有侵犯您的权益请联系我们删除，联系邮箱：wyl860211@qq.com 。

图文短视频制作教程:课件帮一键将长文转为竖版短视频

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-11-09 04:00:29 HTTP/1.1 GET : http://a.sjds.net/a/536013.html
  2. 运行时间 : 0.076691s [ 吞吐率：13.04req/s ] 内存消耗：4,530.74kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=7f31309f46472034ea188f430ae80d86
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  1. CONNECT:[ UseTime:0.000471s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000641s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000352s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000339s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000717s ]
  6. SELECT * FROM `set` [ RunTime:0.000345s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000806s ]
  8. SELECT * FROM `article` WHERE `id` = 536013 LIMIT 1 [ RunTime:0.000461s ]
  9. UPDATE `article` SET `lasttime` = 1794168029 WHERE `id` = 536013 [ RunTime:0.001063s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000318s ]
  11. SELECT * FROM `article` WHERE `id` < 536013 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000405s ]
  12. SELECT * FROM `article` WHERE `id` > 536013 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000350s ]
  13. SELECT * FROM `article` WHERE `id` < 536013 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000503s ]
  14. SELECT * FROM `article` WHERE `id` < 536013 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000555s ]
  15. SELECT * FROM `article` WHERE `id` < 536013 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000715s ]
0.087874s