送交者: 短江学者 于 2010-12-19, 21:07:06:

回答: Steven: 用一根耳机线可以欣赏各种音乐,即只要一个随时间变化的电流。怎么回事？ 由 短江学者 于 2010-12-19, 20:58:24:

• 为什么一根耳机线就会是一维函数？ - steven (60 bytes) 2010-12-19, 22:49:51 (527823)
  • is it just i(t) ? (无内容) - 短江学者 (0 bytes) 2010-12-19, 22:57:29 (527825)
    • on a complex plan. (无内容) - steven (0 bytes) 2010-12-19, 23:02:04 (527827)
      • you can express it with complex numbers but in the earphone cord it is just i(t) (无内容) - 短江学者 (0 bytes) 2010-12-19, 23:07:00 (527833)
      • besides, when the headphone actually recreates - steven (35 bytes) 2010-12-19, 23:06:16 (527832)
        • you know music, but not sound. (无内容) - OO8 (0 bytes) 2010-12-20, 01:51:08 (527850)
          • you think the sound wave propagates through air - steven (28 bytes) 2010-12-20, 02:05:07 (527857)

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