..the best which Edw. Teller, "Father of the H-Bomb" and self-promoter extraordinaire could come up with.
It was Ulam who did the critical thinking (and calculations) for
[link|http://www.pbs.org/wgbh/amex/bomb/peopleevents/pandeAMEX63.html| Mike.]
Wanna see [link|http://www.angelfire.com/tx/atomicveteran/images/158.jpg|Doomsday], as our children, or post-Iraq- we may? (the ones 100 miles away, that is). Though Mike was a humongous device, it made clear the means of deliverable Doom in convenient sized packages. Clear is not to be confused with 'Good'.
(I have other pix of Mike, which resembled a boiler for Titanic, with lots of piping.) That explosion was Stupefying.. even to the old hands. The extant movie in color, though grainy - shows the huge fireball, hemispherical as it was a ground burst, of course.. with bizarre artifacts swirling within it for many seconds. I thought these resembled spiral galaxies - it was truly eerie, seemingly on a whole new scale from all previous: not merely 'bigger' ... 'profoundly Awful'?
Not that that would stop homo-sap from stamping out thousands of them.
Of course.