Nukes 2of6: Critical Mass and the 'Gun Design' Nuke

[geonerd]

I've never gained an intuitive grasp of why compression increases reactivity. It seem that an average N will still pass by the same number of nuclei before escaping, and that these targets will have the same capture cross section. I've heard the explanation that compression reduces the surface area through which N can escape. This sounds mathematically plausible, but how does this circumvent my my first argument? What am I missing? Anyone?

[coolestdude80]

Professor Muller is awesome! The terrorists that want to use this information are too simple and have no resources to produce these kind of weapons. Amen.

[UniversalVision]

This is great stuff. May I asked where is the "link" to more of his lectures? I couldn't find the box on the right of the video. This is great stuff. I was surprised that such a design is so simple, yet the resources are hard to obtain. I saw a diagram from an encyclopedia of military warfare. It's awesome!

[theinquisitor]

@UniversalVision, ah that's because youtube in it's infinite wisdom decided to move the description boxes to below the video. If you click on the little block of text under the video that says "Lecture by Professor Richard Muller..." etc, it will expand and show a link to all the lectures in this course.

[goddesslush]

no cop out at all. how can you honestly say its hundred percent factual online? unless you believe it? there is nothing to verify such things even when you cross reference the sources they have to be real 100% right? So enlighten me with what you mean else shut up.. it depends on what we are looking up thou. I find people like you extremely ignorant i doubt you even know what your talking about either.

[goddesslush]

Look drama queen. There is history then there is history on how you people like to change to suit your course. It was necessary. While at the same time it was perfect for making Japan surrender. Not all about power. Learn History don't believe everything you read online.

[TheJacolyte]

"Learn History don't believe everything you read online."

I agree with you completely, let's not even bother to do a few Google searches at least, we can rely on The Truth(TM) from our government licensed, approved, trained and tested history teachers.

I agree with you completely.

[goddesslush]

@TheJacolyte it is impossible now a days to tell whats real information on how you like to see it. as alot of it is man made and has only one viewpoint it likes to put across. So in my opinion you cannot trust anything so much specially all these idiots preaching "new world order" with out any real proof its all hear say. sometimes going with the message your told is easier doesn't mean you don't question it. Or in some peoples cases reinvent history then all you need is idiots spread it around.

[TheJacolyte]

@goddesslush sounds like a cop out of doing any real research to me.

[goddesslush]

No one wants war or violence apart from the people in control.

[andres6868]

Very interesting. The gun type bomb is very crude, while it is effective, the real danger of predetonation makes it very dangerous. As Luis Alvarez commented once, if the problem for the Los Alamos team during World War II was that the gun type weapon would explode too easily, the problem with the implosion type is that it would be hard to detonate (the core needed to be compressed to an almost perfect sphere through almost completely synchronized detonations)

[desidude006]

yay i learnt something

[916fanatic1]

making the parts for the actual device would be the easy part.But getting your hands on the enriched uranium 235 and the polonium and lithium initiator would be the hard part.

[revtkatt]

Its not a high explosive in the gun

design, its an ordinary propellant,

eg nitrocellulose. A high explosive

would shatter the gun.

[Deathridesahorse2]

It is interesting: we do need to talk about it and educate ourselves! Ta!

[cycimian]

Elaberating crittical mass, , try this one at home, have a dinner with lots of ruffage, have a practical joker in the family that brought a metamucial pound cake with an exlax chocolate coating, a few drinks and you will reach the capacity of not just critical mass , but mass ejection,

Nukes are good to stay warm with and cool in summer, the waist is not as bad as what we currently breath today even in the country,

But i love bashing the pulpit.

[cycimian]

He forgot to mention Jumbo, it was the safe for the primary testing,

But heres where chem comes together, your confineing a compression level until it becomes unstable, Its a carry on formula that have the speeders in Arkinsas know, But they Prefer the Hard on for Fucking Rather then Fucking everything.

[theinquisitor]

No problem. There should be a box to the right of the video which says "From: theinquisitor" etc. Where it says "Lecture by Professor Richard Muller (more)", click where it says (more) and you'll see the description expand. At the bottom of that description is a link to all of the lectures on google video. They will be listed out of order but they're all there. Let me know if you have any problems. Hope you enjoy them.

[theinquisitor]

No worries rinorberisha, a whole semester's worth of them is on google video. Check the description box for a link to the full lectures.

[brotherjupiter]

Appreciate the posting these lectures. Wish I was 1/32 as smart as this guy.

[KingKafir]

Thanks for scaring the hell out of me. :)

[yancur]

Are you scared because you now know how to make an atomic bomb ? ;)

[KingKafir]

WE ARE ALL DOOMED!!!!!!! :D

[TheJacolyte]

We're only doomed if religious fanatics get a hold of this stuff.

Great lectures by the way, really interesting.

[goddesslush]

Not really. They would never have the money or resources let alone the stupidity to try and get a weapon like that.. Which would be picked up upon delivering.

[TheJacolyte]

Crusades, The Inquisition, "The Troubles" in Northern Ireland (three decades of brutal religious violence), The Rwanda Genocide, The Middle East, etc.

If you Google "list of religious wars", the list goes on about religious fighting in history and current times.

Now look at me in the face and tell me there aren't religious people out there who would love to completely wipe out another religious group with this stuff.

[goddesslush]

@TheJacolyte Of course. I doubt they'd ever use nukes. They want the land to be live able after. Israel was rumoured to be working on a biological weapon that only targets individuals based on dna traits which would not harm anyone else but would kill the ones it works towards. :p

[theinquisitor]

"I doubt they'd ever use nukes. They want the land to be live able after"

Except that in many cases we're not talking about people interested in military conquest. We're talking about people who want to fulfill apocalyptic prophecies that will usher in the end of the world when their messiah descends from heaven like Superman.

"But all this was done, that the scriptures of the prophets might be fulfilled" - Matthew 26:56

They talk in glee about the coming of the apocalypse.

[TheJacolyte]

@goddesslush What about Harry Truman? He said he would talk to god and ask god for guidance, and he ended up authorizing the death of 90,000166,000 people in Hiroshima and 60,00080,000 in Nagasaki with a nuclear weapon. Civilians, women, children, didn't matter. People who had nothing to do with the war, eliminated.

[TheJacolyte]

The dashes did not show up in my reply, should be: "90,000 - 166,000 people in Hiroshima and 60,000 - 80,000 in Nagasaki"

[goddesslush]

@TheJacolyte Actually Hiroshima was warned extensively and ultimately Truman's choice saved more lives on a bloody war which would of cost so many more lives on both sides. Also Japan was far from innocent.

[TheJacolyte]

@goddesslush So let's nuke and devastate the civilian population, i.e. people who did not choose to invade China, people who didn't kill anyone, women, children, and students included. I agree with you completely, makes total sense. Truman warned those babies, children, and housewives... they got what was coming to them.

[goddesslush]

@TheJacolyte There is sensible and there is just stupidity matched with dramatics.. Either way i'm done talking to you.

[TheJacolyte]

@goddesslush And there are also people who lack the ability to make a compelling argument

[goddesslush]

@TheJacolyte You are not seeing the bigger picture thou. So I am not wasting my time with you as your only cling to human life with out any understanding that these weapons bring so much peace mainly because no one wants to use them and as a result are the perfect deterrence no one wins a nuclear conflict. No one wants to start one if you had any understanding of these weapons you would know that. But yes you keep your head in the sand and play the oh poor victims..

[TheJacolyte]

@goddesslush You're not using the vast array of information you have available to your fingertips.

If only you could hear the people scream. Imagine a young naked child running down the street looking for its parents, with flesh dangling from its back and cloth infused to its skin, screaming and crying in agony. You're okay with this.

It wasn't necessary. Pearl Harbor was a provoked attack by the U.S., because our politicians wanted to enter the war for manufacturing profits and pol. power.

[goddesslush]

@TheJacolyte I love nuclear weapons in general. I find them peaceful. I do not care for your views either. So please stop wasting my time.

[TheJacolyte]

"I love nuclear weapons in general. I find them peaceful."

I find the science behind it cool, too, I won't argue that.

I just find it scary how you can justify mass murder for profits.

[moveaxebx]

@TheJacolyte

Now imageine a fanatic atheist who wants to drop bomb on religious people? Not good either, huh?

[theinquisitor]

@moveaxebx, can you think of a single example of that? There's no such thing as a fanatic atheist. You can't fanatically not believe in something. There are fanatical communists, who also happen to be atheists, but what you need to worry about there is the communism not the atheism. The problem is ideology. People act on their beliefs, not their lack of beliefs. How often do you take action based on all the things other people believe in that you don't?

[moveaxebx]

@theinquisitor

"People act on their beliefs, not their lack of beliefs."

And you believe that God does _not_ exist.

My point was, no ideology, formal or unformal, is safe from fundamentalism. People who are trapped in it, don't see it that way. They all think that they are fighting for something. It can happen tommorow that one atheist will raise and attract masses with stories how all religious people should be killed...and people will follow. Good luck!

[theinquisitor]

@moveaxebx: "you believe that God does _not_ exist"

No actually I just don't believe that God exists. There's a subtle but important difference there. Atheists have nothing necessarily in common except that they don't accept the claims of religion. If someone did raise the masses to kill religious people, atheism would be a necessary but not sufficient condition for membership. It also requires the belief that killing religious people is a good thing. THAT belief is the bad part, not atheism.

[TheJacolyte]

@moveaxebx

number of wars fought over religious differences: countless

number of wars fought over secularism: ... *crickets chirping*

[theinquisitor]

Don't worry. The bomb is easy but enriching uranium is hard, as the later lectures will show.

[yancur]

Lol, yeah I know ;) I was just pulling his leg ;)