Switch On, Switch Off 在线电子书 图书标签:
发表于2024-11-11
Switch On, Switch Off 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
The switch goes up -- the light goes on,
The switch goes down -- the light goes off.It seems like magic! It's not -- it's electricity. But how does a light actually work? In this clear and simple book learn all about electricity, how it's produced, and how it can be used. At the end you'll learn how to conduct fun experiments that will let you generate electricity yourself!
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Switch On, Switch Off 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024