what were the first atomic weapons used in battle?
453479
The only nuclear weapons ever used in battle were at\nHiroshima and Nagasaki in Japan on Aug 6 and Aug 9 1945.\nThey were the 2nd and 3rd nuclear devices ever exploded \nin history. The first was a test in Almogordo, New Mexico. The first and third explosions were from plutonium and the\nsecond, from uranium. The Hiroshima and Nagasaki\nweapons had code names, Little Boy and Fat Man. The names\nreflected their shape. Little Boy was narrow and long,\nsomewhat pencil shaped and had an explosive ignition.\nFat Man was altogether larger, spherical shaped and had \nan implosive ignition. Little Boy was carried by a B-29\nnamed Enola Gay after the captain's mother. Fat Man\nwas carried by a B-29 named Bock's Car after the captain's\nname. Both planes took off from Tinian Island.
280317
the first iron ships were used during this war
500842
Hiroshima was the first Japanease city that was hit with an Atomic Bomb which ultimately led to the end of the War of course after we hit Nagasaki.  Even though those attacks are said to be brutal many agree that it saved millions of lives if we would have had to do a total land invasion of Japan.
72253
While this may not be an official answer it is at least my opinion.  First the U.S. is the only country to ever use nukes in a war.  We dropped two bombs on Japan in August of 1945.  As the first Nation to develope this kind of weapon we have also been the only Nation to ever use it against another.  It is certainly safe to say that we did not know the full ramifications of it's use at the time we used it, this weapon has long lasting effects that were never dreamed of when first used.  When the Solviets obtained nukes both sides built up arsenals to equal each others, by the 60's it was realized that we could not continue to test nukes above ground as we were destroying the land with radiation and doing God know what to our atmosphere. (Green House Effect?, Cancer causing levels of radiation? etc.)  It was felt by both sides at the time that we needed to balance the power by creating equal arsenals of nukes.  We still maintain a certain level of these weapons in order to keep balance and maintain our stregnth.  Today countries that have little respect for the World Community are developing these powers and this needs to be controlled.  The United Nations states that this must be controlled.  Countries that have in their recent history had governments that have been toppeled by revolution or likely to have a Coup are not stable enough countries to have this kind of power.  We in the United States know that we will not be the first to strike with our nukes, however our arsenal is still there to protect us if need be.  If there is anything that the World Community should have learned in recent years it is that the United States has the military weapons to do just about anything we please and with precision.  The main objection of the U.S. to having more countries develope these weapons is the likelyhood of them being sold to a terrorist group or another third party that has less responsibility and accountablity for their actions.
320293
I believe that what you really wanted to ask is; What's the difference between an atom bomb and a hydrogen bomb?  Atom bombs and hydrogen bombs are both considered nuclear weapons.  The atom bomb, or A-Bomb, derives its energy from nuclear fission, (large heavy atoms usually of plutonium breaking up into smaller light-weight atoms) while the hydrogen bomb, or H-Bomb, derives its energy from nuclear fusion, (small light-weight atoms usually tritium or deuterium combining into larger heavier atoms like helium).  Both have devastating long term consequences due to the radioactive fallout.
228965
try these sites they are pretty good\nhope i helped\nhttp://www.world-war-2.info/weapons/\n\nhttp://www.firstworldwar.com/weaponry/
559555
Atomic Bomb, Bismarck, Churchill Mk VII, destroyer, Eisenhower, flamethrower, grenadier, heavy cruiser, Italian blackshirts, Junkers Stuka dive-bomber, Katyusha multiple rockets, Leningrad blockade, Maginot Wall, Norwiegan commando, Okinawa, Pearl Harbor, Queen Mary, radar, Soviet Union, T-34, Unterseeboot, Vichy France, Wermacht, XR-4 Helicopter, Yamamoto, Zugfuhrer Kompanie
1167525
The Hiroshima Bomb \nSize: length - 3 meters, diameter - 0.7 meters. \nWeight: 4 tons. \nNuclear material: Uranium 235. \nEnergy released: equivalent to 12.5 kilotons of TNT. \nCode name: "Little Boy". \nhttp://mothra.rerf.or.jp/ENG/A-bomb/History/Damages.html\n\nLos Alamos produced two operational bombs: “Little Boy,” the uranium bomb dropped on Hiroshima, and the “Fat Man” plutonium bomb used at Nagasaki.\nLittle Boy  (Hiroshima) Fat Man  (Nagasaki)   \nWeight 9,700 lbs. 10,800 lbs.   \nLength 10 ft.                10 ft. 8 in.   \nDiameter 28 in.                  60 in.   \nFuel enriched uranium enriched plutonium   \nDetonation gun type implosion  \nExplosive Force15,000 tons TNT21,000 tons TNT \nAlthough the explosive power of Fat Man was greater than that of Little Boy, the damage was less extensive because of the hilly terrain around Nagasaki.\nSources: The Manhattan Project Heritage \nPreservation Association; USAF Museum.\n\nFrom URL http://www.afa.org/new_root/enolagay/AB.asp
187876
The role of mathimatics in warfare throughout history is well documented. There are so many examples it's hard to know where to start. Most of it has been converted into computer programs in modern warfare.\n\nAn example might be a sniper and scout. The scout ranges the distance of the enemy. The sniper takes into consideration wind speed, trajectory of the bullet, etc. in order to aim and strike the target.
126378
In a nutshell, the USSR started building missile launch sites in Cuba. The US discovered this and demanded the removal of the missiles creating a 13 day standoff between the US and USSR representing the closest the world has ever come to global thermonuclear war. The USSR backed down and accepted a token "no invasion" pledge towards Cuba and the missles were removed.\n\nNo B2 bombers were used.  The US used a U2 spy plane to take pictures of the missile sites.
1084273
The bombs used in Hiroshima and Nagasaki were fission bombs, with respective yields of 15 and 22 kilotons.  A fission bomb generates about 4,000,000 Megajoules of energy per kiloton of explosive force, so the Hiroshima bomb would have produced 60,000,000 Megajoules of energy while the Nagasaki bomb produced 88,000,000 Megajoules.
700264
atomic bombs and Hydrogen bombs are types of nuclear bombs. in plan atom bombs there is an outer layer of high explosives and an inner layer of unstable isotopes like plutonium or uranium. the unstable isotopes and and their atoms react in fission from the pressure caused by the explosives the atoms burst and particles from that collide and burst other atoms creating a chain reaction. the H bomb uses fusion reaction with Hydrogen were the atoms are fused together due to the reacting high explosives and often isotopes surrounding the hydrogen fusing them into helium and other atoms.\n\nsimply the atom bomb uses fission with isotopes\nand the H bomb uses the fusion of hydrogen to increases the power
762434
Atomic Bomb is actually a type of Nuclear Weapon.\n\nThere are two basic types of nuclear weapons. The first are weapons which produce their explosive energy through nuclear fission reactions alone. These are known colloquially as atomic bombs, A-bombs, or fission bombs. In fission weapons, a mass of fissile material (enriched uranium or plutonium) is assembled into a supercritical mass—the amount of material needed to start an exponentially growing nuclear chain reaction—either by shooting one piece of subcritical material into another, or by compressing a subcritical mass with chemical explosives, at which point neutrons are injected and the reaction begins. A major challenge in all nuclear weapon designs is ensuring that a significant fraction of the fuel is consumed before the weapon destroys itself. The amount of energy released by fission bombs can range between the equivalent of less than a ton of TNT upwards to around 500,000 tons (500 kilotons) of TNT.\n\nThe second basic type of nuclear weapon produces a large amount of its energy through nuclear fusion reactions, and can be over a thousand times more powerful than fission bombs. These are known as hydrogen bombs, H-bombs, thermonuclear bombs, or fusion bombs. Only six countries— United States, Russia, United Kingdom, People's Republic of China, France, and possibly India—are known to possess hydrogen bombs. Hydrogen bombs work by utilizing the Teller-Ulam design, in which a fission bomb is detonated in a specially manufactured compartment adjacent to a fusion fuel. The gamma and X-rays of the fission explosion compress and heat a capsule of tritium, deuterium, or lithium deuteride starting a fusion reaction. Neutrons emitted by this fusion reaction can induce a final fission stage in a depleted uranium tamper surrounding the fusion fuel, increasing the yield considerably as well as the amount of nuclear fallout. Each of these components is known as a "stage", with the fission bomb as the "primary" and the fusion capsule as the "secondary". By chaining together numerous stages with increasing amounts of fusion fuel, thermonuclear weapons can be made to an almost arbitrary yield; the largest ever detonated (the Tsar Bomba of the USSR) released an energy equivalent to over 50 million tons (megatons) of TNT, though most modern weapons are nowhere near that large.\n\nThere are other types of nuclear weapons as well. For example, a boosted fission weapon is a fission bomb which increases its explosive yield through a small amount of fusion reactions, but it is not a hydrogen bomb. Some weapons are designed for special purposes; a neutron bomb is a nuclear weapon that yields a relatively small explosion but a relatively large amount of prompt radiation; these could theoretically be used to cause massive casualties while leaving infrastructure mostly intact. The detonation of a nuclear weapon is accompanied by a blast of neutron radiation. Surrounding a nuclear weapon with suitable materials (such as cobalt or gold) creates a weapon known as a salted bomb. This device can produce exceptionally large quantities of radioactive contamination. Most variety in nuclear weapon design is in different yields of nuclear weapons for different types of purposes, and in manipulating design elements to attempt to make weapons extremely small.
903103
location-USA\n\nPhysicist-Oppenheimer\n\nThe Germans had the right idea about how to create a plutonium weapon but failed to get an operable design for the heavy water reactor to convert U238 into Pu239.\n\nThe Manhattan project purified U235 in thousands of centrifuges in Kentucky and built a nuclear weapon that was first tested at the trinity site in white sands New Mexico with what is known as the shotgun design in which a sphere of Uranium with a piece missing is shot with the missing piece creating a complete hypercritical mass.
964611
nuclear warheads can be delivered as:\n\n1. bombs (obviously you don't need satellites for this)\n2. cruise missiles (Wikipedia: "The lowest cost system in wide use uses a radar altimeter, barometric altimeter and clock to navigate a digital strip map. Some systems may now use satellite navigation or inertial guidance, but these are substantially more expensive...")\n\nI think ballistic missiles need GPS but I'm not sure. either way we have plenty of nukes that don't need satellites, enough to destroy the world once over, I'm sure.
638564
Yes, they had used it but only once in world war two. They dropped the bomb in 1945.
872488
A nuclear bomb is a weapon which derives its destructive force from nuclear reactions of fission or fusion. As a result, even a nuclear bomb with a relatively small yield is significantly more powerful than the largest conventional explosives, and a single bomb is capable of destroying an entire city.