Found 5 comments on HN
hga · 2016-09-24 · Original thread
Indeed, this I believe is the key insight into the stunning success of the Manhattan project. The scientists worked pretty hard as soon as uranium fission and it's details were discovered, Frisch and Peierls critically got all the fast fission concepts right in 1940, see (https://en.wikipedia.org/wiki/Frisch%E2%80%93Peierls_memoran... And Frisch's story is particularly interesting, see Rhodes' book, doing Christmas vacation with his aunt, who just happened to be the first physicist her back in Germany colleague sent his results to right then.... Vs., for example, again from Rhodes' book, a clerical mixup ruining the saving throw for the German effort, the Nazi political types got invitations for the wrong seminar, one on very technical stuff instead of the pitch for atomic stuff (which, if they'd done everything right, they could have pulled off, I think).

But it took a long time to light a fire under the American authorities, and it wasn't until the absolutely critical replacement of his name is a footnote in history with Groves that things really got rolling, on the industrial scale needed, and the scientists and engineers sufficiently focused on the design and execution of the bombs themselves (which for various reasons didn't end up being the afterthought some expected). And he of course picked Oppenheimer to lead that effort, which was opposed by most, albeit he was one of the few uncommitted physicists capable at that level.

These two men organized more than 100,000 people for the industrial production of the required fissionables (90% of the work per Wikipedia), and Grove's drive got those ready in time to forestall Operation Downfall. Heck, they went from the first real test to putting metal on target in 21 and 24 days....

And the design and fabrication of "the bomb" turned out to be massively harder than they expected due to weapons grade plutonium not being suitable for a gun assembly bomb (which is also grossly wasteful of fissionable, if the Little Boy is any guide, as I recall it had 3x critical mass, and a fair amount if it wasn't as pure U-235 as they'd have wanted). Making the implosion concept work was hard, and they got it right the first time....

Read Rhode's book, especially the latter half after the nuclear physics discoveries take a back seat (https://www.amazon.com/Making-Atomic-Bomb-25th-Anniversary/d...) and Grove's autobiography (https://www.amazon.com/Now-Can-Be-Told-Manhattan/dp/03068018...) to learn the organization and management details, they're amazing.

And had much wider effects on the world at large, that we could indeed do such things led to the Apollo program, and of course to too much conceit that "If we can put a man on the moon, why can't we [do something very different and a lot more intractable, probably without even a clearly defined goal]?"

hga · 2015-06-19 · Original thread
I would start with Rhodes' The Making of the Atomic Bomb (http://www.amazon.com/The-Making-Atomic-Bomb-Anniversary/dp/...). It has something for everyone, although many want to e.g. skip the initial 300 or so pages on the relevant developments in nuclear physics. And the author will sometimes go on excessively long digressions, like all about Swedish village where Lise Meitner and her nephew Otto Hahn did their Christmas vacation when she was the first to get the news from her colleague back in (Nazi) Germany that uranium fissioned.

More later, or email me (check my HN profile).

josefdlange · 2015-01-16 · Original thread
If anyone is interested in the biography of the Manhattan Project in general, including much of the goings-on at Los Alamos, I really must recommend Rhodes' "The Making of the Atomic Bomb" (http://www.amazon.com/The-Making-Atomic-Bomb-Anniversary/dp/...)

It's an excellent read, cover-to-cover. One of the few assigned books I read with excitement while in undergrad.

sukilot · 2014-12-27 · Original thread
Also http://www.amazon.com/The-Making-Atomic-Bomb-Anniversary/dp/...

The science was so good that I got a bad grade on my History class paper, because I focused too much on the science and not so much on the "storytelling" of history. Which apparently puts me in good company slongside Knuth :-)

tedjdziuba · 2014-09-30 · Original thread
"The Making of the Atomic Bomb" http://www.amazon.com/Making-Atomic-Bomb-25th-Anniversary/dp... is a fantastic book for anybody in a technical field. It describes in precise detail how a team of scientists, materials engineers, and government came together to make possible something that started as theoretical physics.

J. Robert Oppenheimer and Leslie Groves were a fascinating team, Oppenheimer being a physicist and Groves an Army general.

A must for anyone in technical management.

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