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1701075006 读者在尝试本书中的实验时,很有可能会一次一次地遇到我上面提到的情况,一开始遇到些挫折是非常正常的。毕竟书中的实验都比较“高科技”。每个人所能得到的材料略有差别,或者有一些细小的问题文中没有提到。实际上,本书将会着重突出原理和制作的关键,把细节问题和细微设计留给读者自己完成,这样读者就会把本书当作引导,当作“idea”的来源,而不是按部就班地机械重复(大学生朋友们一定记得,自己的实验课本是如何让我们只能按部就班地按几个按钮,抄录一些数据,把一个个有趣的实验活生生地变得索然寡味,把与大自然的美丽邂逅变成老师安排的形式化的“相亲”)。
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1701075008 读者会发现,正是那些大大小小的可以被克服的挫折让实验的过程充满挑战,让成功的喜悦倍加珍贵。相信通过亲手尝试,你能够一次次地“与大自然美妙地相遇”!
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1701075010 薛加民
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1701075012 2013年1月
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1701075017 我们都是科学家:那些妙趣横生而寓意深远的科学实验(修订版) [:1701074923]
1701075018 我们都是科学家:那些妙趣横生而寓意深远的科学实验(修订版) 推荐序
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1701075022 Dear Chinese reader,
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1701075024 The book in your hand is a collection of fun and inspiring amateur science projects. The author, Jiamin, was a PhD student in my group in the physics department of the University of Arizona. I witnessed and sometimes participated in the creation of more than half of the projects in my lab. We played with the diamagnetic levitation (Chapter 7) and levitron (Chapter 8) together. From time to time Jiamin would show me other interesting stuff he made in his spare time, such as the bending laser light in sugar water (Chapter 2) and PID controlled magnetic levitations (Chapter 16) etc. Even the day before he left our lab to work in another city, he was trying to measure the microwave leakage from the microwave oven in our lab (Chapter 4). Fortunately, he didn’t break the oven.
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1701075026 Jiamin did all these projects in a lab filled with instruments costing hundreds of thousands of dollars. However, he did not use any of this equipment for these projects. So you can also enjoy the fun experiments at home with a little bit of spare money and lots of spare time, and explore some quite broad and deep science topics. Even a professional scientist can find something new and interesting from reading the book and experimenting with the project ideas.
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1701075028 Time to get your hands dirty and start working on them!
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1701075030 Best wishes,
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1701075032 Brian LeRoy
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1701075034 Tucson, Arizona
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1701075036 亲爱的中国读者:
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1701075038 你手中的这本书中汇集了许多妙趣横生而且寓意深远的业余科学项目。书的作者加民曾是我在亚利桑那大学物理系的博士生。我目睹了书中超过半数的项目是怎样诞生的,有时我还会参与其中。我们一起玩过逆磁悬浮(第7章)和磁悬浮陀螺(第8章)。加民还时常会给我看一些他在业余时间做的其他好玩的东西,比如糖水中弯曲的激光(第2章),PID控制下的磁悬浮装置(第16章)等。直到他博士毕业将要离开我们的实验室去别的城市工作的前一天,他还在实验室里尝试测量微波炉的泄漏量(第4章)。幸运的是,他没有弄坏我们的微波炉。
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1701075040 我们的实验室里装满了价值数十万美元的科学仪器,而对于本书中的业余科学实验,加民并没有用到这些昂贵的设备。所以你也可以在自己家中花少许的零钱和大量的闲暇时间享受这些实验带来的乐趣。同时还能探索一些非常广泛和深远的科学领域。即使是一个职业的科学家,他(她)在阅读这本书以及尝试书中的实验时,也会发现新的有趣的东西。
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1701075042 现在,是时候行动起来开始动手实践了!
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1701075044 最良好的祝愿
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1701075046 Brian LeRoy[1]
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1701075048 图桑,亚利桑那
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1701075050 [1].LeRoy教授是美国亚利桑那大学(University of Arizona)物理系副教授。
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