How long does the lethal radiation from a nuclear bomb take to die?
That depends on the initial amount and type. It also depends on altitude (or depth) of burst. If you know the isotopes involved you can look up their half lives, measure current radiation intensity, and calculate time until radiation will drop to desired level.
You can also periodically measure radiation intensity over a period of time, then extrapolate to get a reasonable estimate of time to drop to desired level without knowing isotopes.
How long has the us had nuclear weapons?
Since 1945.
By the summer of 1946 we had built 9: 3 tested, 2 used, 4 stockpiled.
Is there any bomb powerful than hydrogen bomb?
A bigger hydrogen bomb. The staged Teller-Ulam design has no practical or theoretical yield limit.
Will the US permit Vietnam to acquire a nuclear bomb?
No. Vietnam is a signatory to the Nuclear Non-Proliferation Treaty, which holds them to the obligation of not having any nuclear weapons. Vietnam, as a respectable global citizen, is honoring its obligations to that treaty, so there is not even an issue.
A plutonium bomb is a type of nuclear weapon that uses pluyonium as the nuclear material.
Most plutonium bombs are implosion type. This means that a core of pure plutonium is located in the middle of the bomb, surrounded by conventional chemical explosives. To detonate the bomb and create the nuclear explosion, the conventional explosive is detonated. The explosion surrounds the plutonium core, and the plutonium is heated greatly. This causes nuclear fission(the splitting of atoms to create energy) which causes the bomb to explode. That causes enormous amounts of heat and explosive power. The bomb dropped on nagasaki(plutonium imposion type with a yield of 21 kilotons)completely destroyed a couple miles of the city, with major damage streching even farther. You could get 3rd degree burns for 1.5-2 miles.
The prevention of having to invade and conquer mainland Japan, which by all estimates would have an enormous cost in US casualties and prolong the war with many months, if not with years.
What makes up the largest percent of energy released in a nuclear detonation?
Correct answer is blast effect
Why didnt America nuke Germany instead of japan?
The war with Germany was over and the atomic weapons were not fully developed for their use in the European Theatre .
In which year first submarine was built?
Dutch inventor Cornelis Drebbel built several submersible boats in 1620. They looked like two wooden rowboats fastened on top of each other, the top one upside down, and covered with a waterproof skin of leather. Propelled by oars extended through watertight openings in the skin, historians consider them to be the first maneuverable submarines. American submarines were used during the Revolutionary War (1775-1783) and the American Civil War (1861-1865).
What are the main disadvantages of the new nuclear deal?
The fact that it only cuts the arsenal down to the amount of weapons necessary to destroy civilization around 100 times over, instead of 120. It's the biggest policy joke I've seen in a while. Probably since the last arms reduction policy as a matter of fact.
How did the US throw the nuclear bomb on Japan?
The two bombs were dropped from B-29 airplanes, not thrown.
Who is the first inventor of H-Bomb?
Physicist Edward Teller is often called the "Father of the H-bomb", but he wasn't working alone.
Who detonated the nuclear bomb in Mahabharata?
There were none nuclear bomb. The Mahabharata and Ramayana are the national epics of India. They are probably the longest poems in any language. The Mahabharata, attributed to the sage Vyasa, was written down from 540 to 300 B.C. The Mahabharata tells the legends of the Bharatas, a Vedic Aryan group. The Ramayana, attributed to the poet Valmiki, was written down during the first century A.D., although it is based on oral traditions that go back six or seven centuries earlier. The Ramayana is a moving love story with moral and spiritual themes that has deep appeal in India to this day.
Does Bangladesh have nuclear weapons capability?
No, but it would be nice to see them have nuclear weapons, considering that Pakistan and India are nuclear nations.
How long did it take the Soviet to duplicate the Hydrogen bomb?
How can you protect ourselves from nuclear radiations and attack?
To be completely honest and realistic, you can't.
If you want a book that contains the best advice available and is readable, get the Novel Pulling Throughby Dean Ing. It contains an appendix explaining how to build an effective Fallout Shelter, wide scale Radiation Survey Meter, etc. that you would need, using ordinary household materials. It is much more realistic than any of the government Emergency Preparedness literature that I have read! Much of the government literature publishes plans assuming you will have many months of warning and $10,000 to $100,000 construction budgets, or just glosses over crucial but inconvenient material. If a real nuclear war comes there will be no warning, but the first blinding flashes!
Explain why countries such as France and Japan rely on heavily on nuclear power?
They are keen to have:
Why nuclear bomb is chemical change?
It is a nuclear change not a chemical one. The energy for the yield originates from the nuclei of the atoms and the electrons (where chemical energy resides) are uninvolved in the process.
Without going into rigorous scientific detail, an atomic bomb works by nuclear fission. That is, large atoms - namely uranium or plutonium - are split into smaller atoms in an uncontrolled chain reaction. One atom splits, neutrons from that split strike and split more atoms, which release more neutrons, and so forth, in what is called a chain reaction. This releases a tremendous amount of energy all at once. Thus a single bomb, weighing no more than a few hundred pounds, explodes with the force of tens of thousands of tons of TNT.
When we look at a hydrogen bomb, which is also a type of nuclear weapon (though strictly not an atomic bomb), we see that it works by nuclear fusion. That is small atoms - namely isotopes of hydrogen - are fused together to make atoms of helium. This releases even more energy. Thus a hydrogen bomb has a force of hundreds of thousands, or even millions of tons of TNT. Fusion requires fantastic temperatures and pressures to occur. The only way to create those conditions is to set off one or more atomic fission bombs. Essentially, a hydrogen bomb is a nuclear fusion device that requires an fission bomb as a detonator.
Both types of bombs produce several effects: a blast wave, thermal (heat) energy, prompt (i.e. immediate) radiation, and fallout (long-term radiation), as well as intense electromagnetic disruption. The exact amount of each depends on the design of the weapon, its size, and where it was detonated.
For the more detailed technical answer, use the link you'll find below for the related question.
What is Mexico's stance on the nuclear non proliferation issue in Iran?
In 1982 Mexico ratified the Sea-Bed Treaty stating that their government has the right to inspect, remove, or destroy military weapons or structures or other nuclear weapons/ weapons of mass destruction. I don't know if this helps at all, but good luck.
Also, Mexico is trying to get closer to nuclear weapons being abolished from all of the world. However, officials have found terrorist groups in Mexico attempting to plan attacks on the US. It has been argued that there are many nuclear weapons in Mexico. They may be for the issue in Iran or against, the world may never know.
What was the most devastating weapon used against us in World War 2?
German Uboat torpedos sinking half of the Merchant Marine fleet
Theoretically, a large enough detonation could alter the axis and spin of the Earth. How large that actually is would be anyone's guess.
What we know is that slightly more than 50 megatons is not enough: the Soviets detonated Kuz'kina Mat' on 30 October 1961. The bomb had a dialed down yield of 50-60 mT, from at least a potential 100 mT. Kuz'kina Mat was detonated air burst, four kilometers above the surface, and had an energy yield of 8.1 on the Richter scale. Most of the blast energy was converted into seismic waves; these could be detected after three psses around the Earth. Had Kuz'kina Mat' been a surface or susurface burst, all of that energy would have been transmitted directly to the planet. Had the weapon been full yield, the blast energy would have have exceeded twice that of the 2004 Sumatra-Andaman event that shifted the Earth's axis by a degree or two.
How much does a nuclear submarine cost?
http://americanhistory.si.edu/subs/history/timeline/cost/index.html
The "power switch" signal will tell the transmission to shift at a higher RPM. Deactivated, the transm. shift softer.