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Microwave sensors

  1. Aug 4, 2003 #1

    My neighbour has microwave sensors, and the microwave beam comes through the walls of my house.

    this sort of thing i think-

    I want to know how I can stop the microwaves. I thought wallpapering the walls with aluminium foil.

    If the sensors work at between say 10 t0 24 ghz (i'm think this is the frequency) what thickness of foil would I need? or how many layers would i have to put up, I want to get it right 1st time.

    are all microwaves from sensors stopped in their tracks by aluminium (supermarket) foil?

    thanks in advance


    i dont talk to my neighbour
  2. jcsd
  3. Aug 4, 2003 #2
    Don't know the thickness off hand, but one question Deany; What evidence do you have that they are penetrating your walls ?[?]
  4. Aug 4, 2003 #3


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    And why do you care? They aren't harmful.
  5. Aug 5, 2003 #4
    Creator *everytime I walk into a different part of my house i can hear him make a noise to let me know that he knows i'm in that room.

    there is no way he would know which room i'm in unless he had eyes that could see through walls.

    russ_watters *I do know microwave of this frequency are not harmful.


    Creator, or anyone know the answer to my question re aluminium foil and the reflective/absortion of the microwaves.

    i have found sensors that are 4ghz to 24 ghz

    any help (other than moving house) appreciated

  6. Aug 5, 2003 #5


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    If you can hear him make noise, he is also capable of hearing you make noise. Perhaps you should just wear socks.

    - Warren
  7. Aug 5, 2003 #6
    Just because I can hear him doesn't mean he can hear me.

    I dont find your 'wear socks' quip funny, do you always make a joke if you dont know the answer to a question?

    needless to say i will avoid reading your 531 posts

  8. Aug 5, 2003 #7


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    As long as it is well grounded I am sure any tinfoil with do the job.... Quite frankly you sound a tad bit parnanoid. Me thinks you are worrying needlessly. Why would your neighbor care what room you are in? and why would he spend any amount of time or money to figure it out? You must understand that You are NOT the center of the universe and most likly your neighbor is totally unaware of your existance. (I hope that does not upset you!)
  9. Aug 5, 2003 #8


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    If you wallpaper your house with any conductor (including any sort of metallic foil), you will create a Faraday cage. We all know from electromagnetic theory that no fields outside a Faraday cage can penetrate to the interior.
    *gasp* Oh no! The horror!

    - Warren
  10. Aug 5, 2003 #9
    I see. Hmmmm... There are 4 possibilities:

    1). It's merely a coincidence.

    2).Microwaves at these low amplitudes are not harmful physically, but they do induce paranoid delusions.

    3). You are really a guinnie pig in your neighbor's test of his latest 'see thru the wall' technology.

    4). There's nothing you can do about it now since he's monitored your internet broadcast to this forum, has traced the cookies to your address, and is currently broadcasting all your movements in the house in real time to everyone on the World Wide Web.

    Fortunately; there is a solution and counter-technology:

    1). Build a Faraday cage around your entire apartment; wear lead-lined underwear and clothing made of copper or aluminum fibers (not steel - it rusts when you wash it). Of course you won't be able to receive cell phone calls, but what the heck... they're probably monitored anyway.

    2). Buy yourself the same kind of microwave monitors your neighbor has, cut a hole in your Faraday cage, and aim it back at him into HIS rooms. Then broadcast all of his movements on the internet. That ought to get his attention. :wink:

    And always remember: Just because you realize you have a case of paranoia doesn't mean your neighbor is NOT out to get you.

  11. Aug 5, 2003 #10
    deany100, as a person who left intensive undergraduate physics at Yale 25 years ago due to a mental illness, I get the feeling that your problem is more typical of the brain than external microwaves, no matter how real they may seem. Please understand that your symptoms are quite typical for people with a diagnosis best left to professional psychiatrists.

    Unfortunately, brain disorders and those who suffer from them are the target of stigma from the ignorant. More than ever, though, the outlook for people with these no-fault brain diseases is heartening. Have you seen the movie A Beautiful Mind? (I have earned a BS and MS in physics since Yale.) Vale!
  12. Aug 5, 2003 #11


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    The mental illness part, I figured. The MS in physics, I did not. It sure as hell doesn't seem like it!

    - Warren
  13. Aug 5, 2003 #12


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    Two things: What is the nature of the sound you hear that lets you know he is tracking you?

    The sensor you gave us a link to does not have the capabilities you describe. First has a binary output - it doesn't track anything, it just detects motion anywhere in its area and says yes there is motion or no there is not. Second, it has both microwave and infrared sensors. Both need to be triggered to set off the alarm. And infrared can't see through walls.

    I share the assessment of the others - you are paranoid and need a type of help we are unable to provide.
  14. Aug 6, 2003 #13
    ....and that means no more radio for you (deany100).....

    PS: if you don't talk to your neighbour why would he care about you?
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