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Thread: How Self Suffecient are You?

  1. #41
    Hooligan upgrayedd's Avatar
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    Nice to know. these have been issues that I've been pre-occupied with for a while(not that worrying would do any good).
    I suppose that keeping water and food from being irradiated would work best by keeping these items in a basement or someplace that is mostly surrounded by dirt?

  2. #42
    Gunco Maniac sjohnson's Avatar
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    Sealed water is all you need.

    "Irradiated" water and food do not themselves become radioactive. Irradiation can cause some chemical reactions, but for water they are minimal and self-restoring. For foods, some nay-sayers will tell you that "bad, stable" chemicals are formed, but IMO the health benefits of bacteria-free food outweigh the small amounts of "bad" chemicals, if any.

    My suggestion? Just keep fallout from entering your food and water supplies, don't worry about any irradiation.

    Quick course in radiation:

    light is a form of radiation. So is heat. The radiation that causes us trouble is high-energy, higher than light or heat.

    alpha radiation - a small atom nucleus, travelling at relatively low speed. Destructive capability, high, but is stopped by a sheet of paper. Only dangerous to the body when emitted inside the body.

    beta radiation - an electron from an atom, travelling at high speed. Destructive capability, high, but is stopped by a sheet of plastic. Mostly only dangerous to the body when emitted inside the body.

    gamma radiation (and it's kissing cousin, x-rays) - pure energy, travels at the speed of light. Stopped by thick layer(s) of lead or tungsten. Only a small percentage of gamma rays cause damage to the body, most pass through the body. Destructive capability, low but real.

    This is an oversimplification, but there are courses at most science colleges if you want to take it further.

    You keep food and water free of fallout so that alpha and beta emitters aren't on your skin or ingested and present in your organs when they emit the alpha or beta radiation. There's not much you can do to prevent exposure to gamma radiation, but it's the least damaging.

    Worry about cleanliness to avoid the worst types of radiation, and keep as healthy as possible to reduce effects (if any) from the unavoidable gamma radiation.

  3. #43
    THE 9mm ADDICT MUSIBIKE's Avatar
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    Exclamation 1/R power decay

    Doesen't Gamma ray intensity drop off as 1/r*2 from the radiation source? That is how it should behave from a point source.

    What is the bandwidth of GAMMA radiation in the frequency domain? It isn't sinusoidal? If so, this energy surely must fall off as well over a short time span as it turns into heat and work.

    I have not studied this type of radiation source.

    MUSIBIKE

  4. #44
    Gunco Maniac sjohnson's Avatar
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    As the distance doubles, the exposure is cut to 1/4. Inverse square law.

    Gamma radiation frequency is coincident with the x-ray spectrum. The main difference between the two is source: x-rays emanate from the electron shell and gamma rays from the nucleus of an atom.

    Quote Originally Posted by wikipedia
    Gamma rays are generally characterized as electromagnetic radiation having the highest frequency and energy, and also the shortest wavelength (below about 10 picometers), within the electromagnetic spectrum. Gamma rays consist of high energy photons with energies above about 100 keV.
    Gamma ray - Wikipedia, the free encyclopedia

    Cosmic rays are at the extreme end of the gamma spectrum. Extremely high energies (MeV) and can travel across the universe without interacting with matter.

    Gamma is pure photon, the only time heat/energy conversions occur is when a gamma ray impinges on electrons or the nucleus. Since photons are so very small, gamma radiation tends to pass through most matter with little interaction.

  5. #45
    Gunco Maniac sjohnson's Avatar
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    Doing some research for school, stumbled onto a website that lists radioactive isotopes and recommended treatments for ingestion of same: Managing Internal Contamination - REMM

  6. #46
    THE 9mm ADDICT MUSIBIKE's Avatar
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    I am going to print all of this out at work tomorrow.

    THx !!!

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