送交者: cornbug 于 2016-02-24, 17:38:12:

回答: 费曼教艺术家电磁学教不下去 由 短江学者 于 2016-02-24, 16:32:33:

• you don't know what friction is - else (117 bytes) 2016-02-25, 01:48:48 (801920)
  • friction is something which can be reduced by adding vaseline (无内容) - pgss (0 bytes) 2016-02-25, 02:04:33 (801925)
    • 艺术家的直觉比cornbug的理性准确 (无内容) - else (0 bytes) 2016-02-25, 02:14:24 (801926)
  • This one is clearer to demonstrate the friction - else (117 bytes) 2016-02-25, 01:54:38 (801921)
    • nice demo (无内容) - pgss (0 bytes) 2016-02-25, 02:04:00 (801924)

加跟贴