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After a neutron bomb blast, the immediate radiation from the explosion is intense but short-lived, primarily consisting of neutron and gamma radiation. Most of the harmful radiation dissipates within a few hours to a few days, but residual radiation from fallout can persist for weeks to years, depending on the environment and the amount of fallout produced. The high-energy neutrons are particularly effective at penetrating materials, so areas near the blast may require extended periods before being deemed safe for human habitation.

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How long did the mushroom cloud at Nagasaki last?

It was actually a dust and smoke cloud in both of the bombs dropped over Japan in the last days of the war. The cloud contains three main classes of material: the remains of the weapon and its fission products, the material acquired from the ground (for burst altitudes below the fallout-free altitude, which depends on the weapon yield), and water vapor. The bulk of radiation contained in the cloud consists of the nuclear fission products; neutron activation isotopes from the weapon materials, air, and the ground debris are only a minor fraction. In Honkawa Elementary School in 2013 a picture of the Hiroshima atom bomb cloud, believed to have been taken about 30 min after detonation was found. But in Nagasaki, the only pictures were taken moments after the blast was done. Witness said that the cloud lasted until night time.


How many atomics bombs have been dropped in the last ten years?

In the last 10 years? None. The last atom bomb was dropped on August 9, 1945.


How long does a smoke bomb usually last?

The ones I was shopping for online were advertised as lasting 1 - 2 minutes.


What was the last island battle before the us dropped the atomic bomb is world war 2?

The Battle of Okinawa .


What did the radiation from the atomic bomb do?

The attack was a nuclear one. In the epicenter of the explosion, people were disintegrated. Further away, only bones remained. Further away, people were burned to death. Further away, people lived with horrible burns. At last the people further to the epicenter, look good but began dying in next days of nuclear poison.

Related Questions

In what year was the neutron bomb invented?

Credit to this invention usually goes to Lawrence Livermore Lab's Samuel Cohen in 1958. The ERW was tested in 1963. Development was halted by President Carter in 1978 and restarted by President Reagan in 1981. Some weapons were retired in 1992 by President George Bush. The last warhead was dismantled in 2003.


What are consequences from the atomic bomb?

The blast of atomic bomb causes electrostatic waves and radiation that last for minimum 14 to 18 days in the air after blast, no land could be fertilized cause of the radiation that has been permitted in the land, childrens born abnormal due to radiations that has been emitted on the land and in the atmosphere. It emitted radiation, causing radiation sickness in addition of the people killed and mained. Babies were born for several generation with deformities due to the radiation effects. It eradicated towns and cities thus peoples' homes, communities, families, property, etc.


How long does it take for a nuclear bomb to clear up?

That is complicated:Depends on yield and height/depth of burst.Depends on several features of bomb design.Depends on halflives of radiological contaminants produced.Depends on decontamination effort attempted and degree of success.Depends on weather.


How do you unlock last mode in Drop dead 2?

In the gate level you have to kill the pig with the neutron bomb and all the mines. just trow whatever you can on the pig and after a while you will kill it


When was The Last Classed Blast created?

The Last Classed Blast was created on 2006-10-16.


When was Last Blast of the Century created?

Last Blast of the Century was created on 2001-04-10.


What is the name of a book about a big bomb killing the whole northern hemisphere then the radiation kills everyone south with Australia last?

On the Beach by Nevil Shute


What rhymes with fasting?

aghast, asked, blast, cast, gassed, hast, last, mast, past, vast, blast, shast2 syllables:aghast, amassed, at last, bomb blast, contrast, go past, harassed, lambaste, leaf cast, miscast, outlast, precast, recast, sand cast, surpassed, the last3 syllables:at long last, cobbler's last, Cuban bast, first and last, jury mast, mooring mast, needle cast, plaster cast, royal mast, solo blast, Thomas Nast, unsurpassed5 syllables:dead hand of the pastPastCastLastVastcast, mast, past, last


Are new clear bombs hotter than the sun?

Is a neutron bomb hotter than the sun ______________________________________ No, not generally. A thermonuclear explosion (a hydrogen fusion bomb, unlike the earlier uranium fission bombs) will approach the temperature of the Sun, but will not equal it, and it will only last for a fraction of a second.


What are some lasting effects from the atom bomb in hiroshima?

Because they way it works it they smash plutonium ( which is radioactive) to split an atom. This produces radiation which is harmful and can last a long time.


What rhymes with past?

blast,cast caste fast gassed last mast passed past sassed vast aghast amassed at last bomb cast broadcast contrast downcast forecast full blast gymnast halfmast harassed miscast newscast outcast outclasssed outlast snadblast steadfast surpassed typecasty all star cast flabbergast overcast telecast unsurpassed enthusiast iconoclastglassed, massed, mast, passed, vastcast, fast, last, slash,etc.fast-blast-cast -mast-last-Cast


Why the last name of Jimmy Neutron is Neutron?

John A. Davis , the creator , gave Jimmy the last name of Neutron to give the audience some expectation/association of science . The surname of Quasar was also considered as a surname for Jimmy .