Re: Thoughts on PQC

On 13/04/2026 18:47, Robert J. Hansen via Gnupg-users wrote:
> ...
> Trinity depended on massive advances in plutonium breeding and 
> enrichment. We had to invent new electrical switches (krytrons) to 
> very precisely send electrical signals to entirely new explosive 
> detonators (exploding bridgewires) embedded in entirely new explosives 
> (castables) that formed complex geometries never before done in 
> explosives (explosive lenses) that required entirely new branches of 
> mathematics to be invented (hydrodynamics). The engineering 
> infrastructure to support the Bomb was *huge*.
>
Actually, krytrons were an existing technology from high speed photography
(they were used to set off flashes to capture images at very precise
times), someone in the project was an expert in high speed photography and
realized their flash photography timer could provide the required timing
of the explosive lens.

Exploding bridgewires was also an existing technology used in "proximity
fuse" secret artillery shells.

Explosive lenses was the existing technology in certain destruction
charges used by special forces and anti-tank weapons.  But to use them at
the speeds needed for the implosion bomb, they needed to be assembled
slightly differently.

 > ...

Enjoy

Jakob
-- 
Jakob Bohm, CIO, Partner, WiseMo A/S.  https://www.wisemo.com
Transformervej 29, 2860 Søborg, Denmark.  Direct +45 31 13 16 10
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