Quote:
Originally Posted by ovsalf
Artvision, could you please elaborate on the EMP shielding devices and techniques?
Mudra, many thanks for initiating this thread. I really appreciate how useful it will likely be in the development/interconnection of radiant zones. In fact, facing the challenges involved in Northern Sanctuary's project of creating a RZ community in the Laurentians, I am sure that this thread is very timely and that it will help our group as well as all other eventual groups to quickly progress by sharing very precious information.
Ovsalf
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Hi Ovsalf, here something I know about shielding.
First of all, we should understand against what we are going to protect. So, there are known by me two types of electromagnetic waves:
- normal, usual we used in radio, TV, microwaves, satellites, etc
- scalar waves, zero point energy, ether energy, radiant energy, etc
We are usually discussing about the regular electromagnetic radiation, which has been theoretical modeled by Lorentz, Maxwell, etc. The ideea is that the wave is creating by the alternance of electric and magnetic fields (the two components of the electro-magnetic fields - thus magnetic and electric fields). The frequency of the alternance will give the frequency of the wave. In our special case we are concerned that, variance of magnetic field will induce in a wire of electric conducting material (metal, or ionic solution) an electric current. The electric current, will not close so, sort to speak nothing flows there but at the extremities of the wire unde an alternating magnetic field, if you connect a voltmeter you will read an electric tension. This tension is higher as the wire is longer and the intensity of alternating field is higher. This electric voltage, if somehow gets into a part of an electronic equipment, which is based on semiconductors (most of modern electronic devices are based on semiconductors) will lead to burning of the semiconductor devices, such as diodes, transistors or integrated circuits (chips). Of course these will lead to the malfunctioning or total destruction of the equipment.
Imagine a long wire, such an antenna, being subjected to such intense electromagnetic field (not the normal one produced by radio station) will induce at the extremities hundreds or maybe thousands of volts. This getting inside of the equipment will fry the equipment.
There is a difference between a lightening stroke the antenna, because the tension here is DC continuous, while in EMP, the high voltage is alternative. The effect is similar, burning the equipment.
So, let's com back to our wire: if the wire is long and has the extremities opened, we can collect a high tension between. Suppose that in our electronic equipment there is some metal conductor where the electromagnetic energy is inducing high voltage, this high voltage will definitely bun the sensitive semiconductors. So, what to do? In order to be safe if we take the long wire and we stick together the two ends, the circuit is closing and the current is starting to travel the wire. The tension (this is the dangerous part) will be zero, we say we short-circuited! Imagine our electronic device is surrounded by a lot of closed looped wires, that form something like a mesh sphere. As many as you add, you will obtain a better protection. Also as the wave frequency, the opening in the conducting mesh should be smaller and smaller.
This effect has been discovered by Faraday, which constructed this surrounding something as a cage, thus was call Faraday Cage. Now you understand, the we need to surround our device to be protected by a conductive mesh, which is continuous in contact all over, in order not letting any place the wave get inside. As we do not know what frequency we will be attacked, will be on the safe side if the holes in the mesh would be zero, meaning is a contiguous sheet of metal in all directions. Something like a metallic box, closed and in all the point in contact, forming a close surface, inside with our protected device. Would be more advantageous, in place of continuous sheet to use a mesh or a perforated sheet, because the electric resistance in alternative current ( it is called impedance) would be lower than in case than continuous metal surface, but we have the disadvantage, that we do not know what will be the attack frequency. So, to be on the safe side for many potential frequencies, we practically shielding with continuous metal sheet.
So we know that in the metal surface of the shielding, the electromagnetic waves will induce currents. The current will short-circuit the voltage, which otherwise will be induced in the metal parts inside our device and will burn the semiconductors. In the expected real world case, the sheet should not be thick, is enough the Aluminium foil for oven Aluminum foil, wrapped two three times. If the energy of wave would be so high, the induced currents would be so high, that the metal shield would getting hotter, then melting and then vaporizing. This would happened if you throw a ball of Aluminum foil inside a microwave oven, the energy there is constant for many seconds (in case of an attack is a pulse only of some microseconds, milliseconds), you will see that the aluminium is almost instantly burning in small incandescnd balls, until the metal is consumed or the oven is damaged or the protection will start working. So, in our real life, we not expecting such intense electromagnetic fiels such in a n microwave oven, therefore no need to put such thick shielding. Anyhow, the measurement, shown that the the electronic current is flowing just to the surface of the metal and not in depth, so no need put such thick metal sheet for protection.
These are the physical phenomenon for the normal electromagnetic waves where the Electric and Magnetic vectors are perpendicular on each other and perpendiculars on the direction of propagations.
2. The scalar waves have been discovered by many scientists but Tesla developed a lot of devices which could produce, or collect this kind of energy from universe and could be put to work. The information for that type of wave is very scarce, most of the research have been occulted by the TPTB. This waves is said to have extraordinary powers and on that kind of waves are based the HAARP weapons and many black op weapons. The difference is that the vector variation of the waves re in the same direction of propagation, thus being called longitudinal waves or scalar waves.
What events can produce EMP devastation effects on our electronics:
1. Special bombs, which are using small nuclear explosions, in higher atmosphere, creating an electromagnetic pulse, of short time (microseconds to milisecods meaning less than 1/1000 of the second even smaller) but with a high energy and covering many frequencies and harmonics. This explosion being on high altitude, will cover large surfaces rendering inutile any semiconductor electronic that have no means of protection over large areas, such hundred of square km
2. Natural solar emissions called Coronal Mass Ejection. We should see the sun as a continuos atomic explosion with some moment of an intense activity than other. Sometime, such highly increase in electromagnetic activity will cause induction of dangerous voltage in the long conductors, as has been the telegraph wires at the end of 1800's but then weren't used semiconductors and the effect wasn't devastating. The more recent effects in 1954, in Quebec, were more devastating as already start to be using semiconductors.
METHODS OF PROTECTION:
1. Better to have electronics working with vacuum tubes, without semiconductors! Remember the grandma radio Would be good have one of that. Russians have some large part of special equipment built based on vacuum tubes. Immune to this attack! Immune by default, no need to shield to protect! They have RF shielding for other reasons
2. First of all, when expect an attack of this type, you should physically separate and disconnect long wires that coming from outside, into house:
- AC energy
- Antennas
- Telephone lines
3. Small electronic devices such ipods, radios, memory sticks, etc, you should put in metal boxes, such as danish biscuit boxes, or coffee boxes, where all their caps make good electric contact on contour with the body of the box. Also all the interior walls should be covered with some isolation material. For example you can use cardboard, or air bubble plastic foil, or vinylin, etc. Whatever is good electric isolator is good. We are trying to avoid that our protected devices, provided that are metallic, such Ipods, etc, would touch the interior metallic box. For the Danish cookies, you will cut two discs which fit one to the bottom of box, anoer to the cap of the box, and also a sheet that will be coiled in a circle to protect the laterals of the box. You can use any kind of adhesive you like. The idea is that the device should not reach the metal of the box IN ANY CONDITION. Take care, how you put the isolation material, in order to not distrurb the good electric contact between the cap and the body of the box. Otherwise you ruin all the construction!
4. Bigger electronic devices, such laptops, measurement devices, etc, you will wrap with air bubble plastic foil, secured in places with scotch adhesive band, covering perfect the device. Then over the air bubble foile wrap a few times some Aluminum Oven cooking foil, but take care always the shiny face be outside the device (is netter conductive on the shiny side). When you need to take it out, just cut carefull with a cutter on one side and etract it as it were in an envelope. When you need to put back in shielding, you will just cover the cutted plastic with scotch and wrap over the cut aluminum foil, some new more foil!
5. If you want to protect a whole room, let's say you put a lot of electronics there, some radio station computers, etc: The room should be shielded on all the sides even the floor and ceiling with chicken wire with smallest as possible. Over that mesh which should be completely connected on all the edges, you will put 1/2 or 1 inch of mineral glass cotton (very good isolator. Over that you should make another shielding from aluminum plates or just Aluminum foil which should be making very good contact on the edges. The shiny part, should be towards exterior where the EMP wave will come. In just one point you should connect a muti-fillar copper meshed wire, to the chicken wire mesh network and the other sides to an very good quality earthing. Same issue also for the aluminium mesh. Over the aluminium, you can put a paint or something to look normal. This kind the Faraday double cage, connected to Earth will shield perfectly everything electronic inside, given that NO EXTERION CONDUCTIVE CABLE GET INSIDE: no AC network, no antenna, no phone line. So, when you suspect such EMP attack you should physically disconect everything is metal cable going inside in this room!
6. Because practically is impossible to predict when such attack will take place, you should apply the redundancy method: always you should have everything two or three folds. Example One laptop working, while 2 shielded, containing same information. One external Hard-drive with data, while 2 in shielded. One memory stick in use, 2 in reserve. One photo camera in use, another in protection, etc. If you have solar energy convertors, one should have as backup in shielding
So, you understand, that for shielding from EMP is enough to have a contiguous metal surface around the protected device; device shoul not physically toutch themetal shield, therefore should be put some isolator material all around the device, be it paper, cloth, air buble plastic foil, etc
There is no need to connect the metallic box to the earth. This is recommended just to large things. Anyhow imagine that airplanes, even they are shielded against EMP, they could not be connected to earthing and even so, the shield is functioning perfectly!
To have no problems with vehicles, try to have vehicles that have NO ELECTRONIC CHIPS OR SEMICONDUCTORS (but most of them they have semiconductors in rectifier diode, from alternator). Keep a spare of those rectifier diodes and avoid electronic plug igniter and starter. Avoid everything electronic, so beter use old diesel technology. Whatever is formed only by cables, circuit breakers, coils, capacitors, contacts, electro-motors, dynamos, alternators, etc, WILL NOT BE AFFECTED BY EMP.
For the everything is electronic, keep one in use and another in shielded backup. (Or at least two issue, if not so expensive)
Have Electronic vacuum tube devices, which immune to EMP.
Otherwise shielding. Small boxes isolate in interior, or bigger metal boxes closing perfectly and with good electric contact on contour, isolated in interior. This would work, at least theoretically> I never real life tested, unless with my Nokia phone, I put in in such Danish Biscuits box and my RX Level descended to minimum. Sometime I wasn't able to call it (out of range message). This entrusted me that is a very good shielding.
Hope that I make very clear the phenomenon and the physics supporting that. For the scalar aka tesla aka HAARP aka radiant waves, I do not have shielding information.
http://www.survivalblog.com/2009/07/...ls_on_the.html
http://www.empcommission.org/docs/A2...ission-7MB.pdf