Were Fresnel lenses a thing back then?
I'd think it more likely that a mirrored surface would be used, and shaped into a parabolic structure... But that'd likely leave archeological evidence which I am unaware of (though that's not at all my field.)
What the chain says
- Block
- 670 332
- Time
- 2021-01-17T06:17:24Z
- Signer
- 15YXRhqbHawbH49aYzfiww2UQ4Cz82GL4t
- App
- twetch
- Type
- post
- Content type
- text/plain
- Name in tx
- twetch#622
Fields the transaction did not carry are omitted. Open the payload to see the bytes as stored.
Signed by
15YXRhqbHawbH49aYzfiww2UQ4Cz82GL4t Verified