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course:interesting_problems:2020:topic15:start [2020/02/24 07:33] yaohy 创建 |
course:interesting_problems:2020:topic15:start [2020/02/24 07:44] (当前版本) yaohy [主要问题] |
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| ===== 课题内容 ===== | ===== 课题内容 ===== | ||
| - | Put a lit candle behind a bottle. If you blow on the bottle from the opposite side, the candle may go out, as if the bottle was not there at all. Explain the phenomenon. | + | If you take a salt or pepper pot and just shake it, the contents will pour out relatively slowly. However, if an object is rubbed along the bottom of the pot, then the rate of pouring can increase dramatically. Explain this phenomenon and investigate how the rate depends on the relevant parameters. |
| ===== 参与学生 ===== | ===== 参与学生 ===== | ||
| ===== 主要问题 ===== | ===== 主要问题 ===== | ||
| - | - 怎么定义 a lit candle？ | + | - 器材 |
| - | - 这个课题，似乎实验容易做，理论上，如何着手？ | + | - 文献 |
| - | - behind需要有哪些限定？ | + | - 实验 |
| ===== 交流 ===== | ===== 交流 ===== | ||