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  2. Nuclear fallout - Wikipedia

    en.wikipedia.org/wiki/Nuclear_fallout

    He presents data showing that "it takes about seven times as long for the dose rate to decay from 1000 roentgens per hour (1000 R/hr) to 10 R/hr (48 hours) as to decay from 1000 R/hr to 100 R/hr (7 hours)." [47] This is a rule of thumb based on observed data, not a precise relation.

  3. Effects of nuclear explosions - Wikipedia

    en.wikipedia.org/wiki/Effects_of_nuclear_explosions

    If a group of people is exposed to a 50 to 59 rems acute (within 24 hours) radiation dose, none will get radiation sickness. If the group is exposed to 60 to 180 rems, 50% will become sick with radiation poisoning. If medically treated, all of the 60–180 rems group will survive.

  4. Effects of nuclear explosions on human health - Wikipedia

    en.wikipedia.org/wiki/Effects_of_nuclear...

    The exposure to 4.5 Gray of penetrating gamma rays has many effects that occur at different times: In 24 hours: [10] vomiting; diarrhea; These will usually abate after 6–7 days. Within 3–4 weeks there is a period of extreme illness. [10] severe bloody diarrhea, indicating intestinal disorders causing fluid imbalance; extensive internal bleeding

  5. If a nuclear weapon is about to explode, here's what a safety ...

    www.aol.com/article/news/2018/02/01/if-a-nuclear...

    It typically takes about 750 millisieverts (mSv) of exposure over several hours or less to make a person sick, or roughly 100 times the amount of background radiation an American receives each year.

  6. International Nuclear and Radiological Event Scale - Wikipedia

    en.wikipedia.org/wiki/International_Nuclear_and...

    The Fukushima Daiichi nuclear accident was originally rated as INES 5, but then upgraded to INES 7 (the highest level) when the events of units 1, 2 and 3 were combined into a single event and the combined release of radiological material was the determining factor for the INES rating.

  7. Nuclear electromagnetic pulse - Wikipedia

    en.wikipedia.org/wiki/Nuclear_electromagnetic_pulse

    The 1.4 Mt total yield 1962 Starfish Prime test had a gamma output of 0.1%, hence 1.4 kt of prompt gamma rays (the blue 'pre-ionisation' curve applies to certain types of thermonuclear weapons, for which gamma and X-rays from the primary fission stage ionize the atmosphere and make it electrically conductive before the main pulse from the ...

  8. Radiation effects from the Fukushima Daiichi nuclear disaster

    en.wikipedia.org/wiki/Radiation_effects_from_the...

    [100] [193] Experts said exposure to this amount of radiation for 6 to 7 hours would result in absorption of the maximum level considered safe for one year. [193] On 16 March Japan's ministry of science measured radiation levels of up to 330 μSv/h 20 kilometers northwest of the power plant. [194]

  9. Neutron bomb - Wikipedia

    en.wikipedia.org/wiki/Neutron_bomb

    Compared to a pure fission bomb with an identical explosive yield, a neutron bomb would emit about ten times [9] the amount of neutron radiation. In a fission bomb, at sea level, the total radiation pulse energy which is composed of both gamma rays and neutrons is approximately 5% of the entire energy released; in neutron bombs, it would be ...