WiFi and long term health issues

Discussion in 'Wireless Internet' started by Phil Schuman, Sep 27, 2004.

  1. Phil Schuman

    Phil Schuman Guest

    Has anyone run across any ongoing studies
    concerning the effects of WiFi and long term health issues.
    ie - what is the long term effect of getting bombarded
    by very low intensity microwave (WiFi) of a few milliwatts
    for an extended period such as might be experienced
    by using a WiFi laptop every day
    or having an Access Point located close to your working area
    or home living/recreation area - family room -
    Phil Schuman, Sep 27, 2004
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  2. Phil Schuman

    gary Guest

    This topic pops up from time to time. Unless you have some part of your body
    constantly in near-contact with the wifi adapter, you are not experiencing
    milliwatts of power. Intensity drops off as the square of distance.
    Visualize your adapter as a tiny baloon with electromagnetic field lines
    packed densely on the surface. Now imagine that balloon inflating until it
    touches your face. What happens to the density of the field lines? The
    transmit power is measured at the antenna, not on the surface of the balloon
    that touches your face.

    A cell phone held to the ear exposes you to higher field strengths. And you
    are probably exposed to stronger EM just by just walking around outdoors on
    a sunny day.
    gary, Sep 27, 2004
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  3. Phil Schuman

    David Brooks Guest

    I have not seen anything specific to laptop WiFi or access point
    emission; however, there is quite a bit of EMF and non thermal microwave
    research that may be extended to address this area. Check out the NIH
    (www.hih.gov), you will find information on incident exposure effects
    both in treatment based and non treatment based exposure.

    Hope that this helps.
    David Brooks, Sep 27, 2004
  4. How long would you like? Wi-Fi (ISM low power) has been around for
    about 10 years. Commodity Wi-Fi about 5 years. Is 5 years exposure
    sufficient. If so, I qualify as an anecdotal benchmark. When I
    started in radio, I had a full head of hair, a full bank account, and
    a positive attitude. After 40 years of continuous exposure to
    wireless, I find my hair falling out, my bank account depleted, and am
    developing a rather bad attitude. Surely this could only be caused by
    RF exposure.
    I'm not aware of any organized studies. There have been plenty on the
    effects of cell phones, but none that I could find involving 2.4GHz
    wireless. The difference is that you use a cell phone with the
    antenna right next to your head, while most laptops are not made to be
    worn as a hat. Exposure decreases with the square of distance (double
    the distance, 1/4 the exposure).

    Incidentally, the total exposure from the mid day sun is about 1000
    watts per square meter. Most of that is in the visible light region,
    but there's quite a bit in the microwave bands. My back of the
    envelope guess (probably wrong) is that in the microwave region, solar
    radiation is about 10,000 time greater than the RF exposure you would
    get from a nearby laptop. I can grind the numbers later (when I have
    time) if you're really interested. (Drivel: I calibrate some of my
    test equipment and antennas using the handy 5800 degree Kevlin solar
    noise source).
    Jeff Liebermann, Sep 27, 2004
  5. Phil Schuman

    Phil Schuman Guest

    I have not investigated the solar equivalents - but it would be
    to see what kinds of various continuous RF sources are around,
    and just how much reaches us from these various sources -
    And yup - same bio results here -
    I've been about HF, VHF, UHF and microHF ?
    and have loss of head covering, enlarging of the frontal area,
    loss of stock portfolio equity, loss of positive attitude,
    and enlarging of the stacks of books & articles -
    Phil - WA9TKA :)
    Phil Schuman, Sep 27, 2004
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