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A 100 Mt weapon can level urban areas in a zone 60 km wide, cause heavy damage in a zone 100 km across, and cause 3rd degree burns in a region 170 km across (only a bit smaller than the width of West Germany). Such a weapon can only be used as a means of destroying an entire urban region - a major urban complex including suburbs and even neighboring cities. This scale of destruction is much larger than any discrete urban area in Western Europe
The effects were spectacular. Despite the very substantial burst height of 4,000 m (13,000 ft) the vast fireball reached down to the Earth and engulfed the ground below it, and swelled upward to nearly the height of the release plane. The blast pressure below the burst point was 300 PSI, six times the peak pressure experienced at Hiroshima. The flash of light was so bright that it was visible at a distance of 1,000 kilometers, despite cloudy skies. One participant in the test saw a bright flash through dark goggles and felt the effects of a thermal pulse even at a distance of 270 km
The area of effectively complete destruction extended to 25 km, and ordinary houses would be subjected to severe damage out to 35 km. The destruction and damage of buildings at much greater ranges than this which occurred was due to the effects of atmospheric focusing, an unpredictable but unavoidable phenomenon with very large atmospheric explosions that is capable of generating localized regions of destructive blast pressure at great distances (even exceeding 1000 km).
The decay of fallout radiation is described by the seven-ten rule. This rule states that for every sevenfold increase in time after detonation, there is a tenfold decrease in the radiation rate. For example, if the radiation intensity one hour after detonation is 1,000 Roentgens (measure of radiation exposure) per hour, after seven hours it will have decreased to one/tenth as much. In seven more time periods (7 X 7 = 49 hours or two days) the radiation level will be 1/100 of the original rate. After about a two-week period, the level of radiation will be at 1/1000 of the level at one hour after detonation.
Originally posted by InTrueFiction
Now in our current days the word nuclear keeps popping up and out of curiosity I was wondering - what is the actual devastation that should be expected from a 2007 big one? How big an area would be destroyed? What kind of aftermath in terms of radioactivity?
Also, (though again I don't know if this is a ridiculous question to ask) nuclear weapons have been being produced for a while now though not used, right? If they are replaced by newer versions what happens to the older ones? As in... are there processes of desmantling and "trash them" (so to speak) without the materials posing a threat anymore?
Originally posted by orangetom1999
What they realized is that it was falling out of the sky. The Chinese had set off a above ground nuclear test and the contamination was lifted into the jet stream and across the globe some of it to fall down all across this country...and some in this location.
What are you talking about please give your sources, there is nothing on the NET that EVER said Nukes at one point fell 5-10 Miles from thier targets, at that range the targets would not get destroyed, the average Nuke in Russia's arsenal is 500kt and 1-25 Megatonnes the SS-18 Mod-1 is 25 Megatonnes, and I'm not sure about U.S. but I know thier average Nuke is around 300kt also which is still more than 20x bigger than WW2 A-Bomb, where are you getting these WRONG numbers
Originally posted by orangetom1999
My point here is that this has happened before in the USA and it is not something the government is wont to let the general public know...so as to cause panic.
You also need to know and understand that with better targeting equipment available today ...most nuclear weapons have been downsized. The huge warheads of the past were because the delivery systems were not that accurate. The lack of acccuracy was compensated for by bigger warheads. This is not the case today. Today warheads can be made smaller and in the case of ICBM type missles they carry multiple warheads all capable of being delivered independently from the launch missle. Instead of landing within five to ten miles they can be delivered to within 500 feet or closer. This is a huge quantum leap in accuracy.
Some weapons are adapted with a feature called "dial a yeild" where the size of the bang can be varied from a particular quantity of nuclear material.
None the less...the type of targeting equipment has negated the need for huge big bang warheads of the past.
Another thing for many of you to consider...is what is the natural background radiation levels of the area in which you live. Some of you would be surprised to know what it is. It actually varys day to day but some areas of the country and globe it is higher than others.
Hope this helps.
Orangetom
My freind do the research on Wikiopedia.org you'll see alot of what your thinking isn't right, for example the SS-18 Mode 3 has a 250 meter CEP (BUT IT'S A 500kt WARHEAD!!!) it doesn't matter if it lands 760+ feet away from the target, 500kt blast will go out to 3-5 miles in a circular blast,
Originally posted by InTrueFiction
Thank you for the answers.
They answered a lot of my doubts and also opened up a path for my own research.
It is interesting (and also logical) to see that instead of developing along the lines of a more widespread and random destruction these weapons are instead evolving towards accuracy that downsizes the area of devastation.
In that sense however I have another ignorant question - with a purpose of eliminating a specific target accurately what is the point of going nuclear instead of using other more conventional and proven weapons and explosives?
In other words, what is the advantage that nuclear weapons have in comparison to other explosives aside from outspread destruction?
and yes, it is known that russia has several times purchased machine tools from the west , most strategic was machine tools purchased from toshiba to reduce cavitation created by scimitair propeller, whcih enabled creation of akula and sierra which were more silent than LA subs,