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I mean, you could literally build a wind up mechanism that you point at the Sun. Here's a simple DIY project that designed one: https://www.youtube.com/watch?v=

by titzer 5y ago

I mean, you could literally build a wind up mechanism that you point at the Sun. Here's a simple DIY project that designed one: https://www.youtube.com/watch?v=4ySnb4cPDnw https://www.youtube.com/watch?v=4ySnb4cPDnw