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Q&A Are there any natural materials that can be used as a magnifying lens (or to craft one)?

I am currently stuck in the wilderness, and I have been out here for a while. I want to focus light. There are various reasons for wanting to do this, with the two biggest reasons being for vision ...

8 answers  ·  posted 6y ago by Loduwijk‭  ·  last activity 6y ago by System‭

Question survival improvised-gear