2 ms·
It's a neat material, similar to natural coquina [0]. One neat thing about coquina in particular is that it was used to construct the walls of the Florida fort
by jihadjihad 2y ago
It's a neat material, similar to natural coquina [0].
One neat thing about coquina in particular is that it was used to construct the walls of the Florida fort mentioned in TFA [1, 2] where it effectively "swallowed" incoming British cannonballs, much to their bewilderment.
0: https://en.wikipedia.org/wiki/Coquina https://en.wikipedia.org/wiki/Coquina
1: https://en.wikipedia.org/wiki/Castillo_de_San_Marcos https://en.wikipedia.org/wiki/Castillo_de_San_Marcos
2: https://www.atlasobscura.com/articles/coquina-fort-in-florida https://www.atlasobscura.com/articles/coquina-fort-in-florid...
- cassepipe 2y agoI wonder how thick you need to make a coquina wall in order to prevent a cannonball from that era to go through. I guess not having it thick enough can be dangerous as the inner layer of the wall might work as shrapnel and hurt anyone on the other side. I know some tank shells worked on that principle before they added some kind of liner on the inside.