1291

Homemade lens consumable metal

Fragments of the mirror, the guy brought the lens.
Focusing it on the sunshine, he gets a temperature which is capable of melting metal.
















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Ancient optical lenses for more than a century was not noticed by the archaeologists!
...
The offender was hiding in the woods
...
The killer was hiding in the woods
...
8 Ways to Make Fire Without Matches
...
The student has created a powerful "solar gun"
...
As should have space settlements to look from the 70s
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