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Thread: Can you calculate an EMP?

  1. #1 Can you calculate an EMP? 
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    EMP - electro-magnetic pulse, can disable electrical material such as phone, computers, watches, GPS, planes,...
    But can we calculate it or is it just a guess how much power it delivers? (if you think you have an equation, please leave it in your answer and specify units, thank you)


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  3. #2 Re: Can you calculate an EMP? 
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    Quote Originally Posted by celtic_warrior
    EMP - electro-magnetic pulse, can disable electrical material such as phone, computers, watches, GPS, planes,...
    But can we calculate it or is it just a guess how much power it delivers? (if you think you have an equation, please leave it in your answer and specify units, thank you)
    I would think that most mobile emp systems could not create damage beyond a 250 mile radius.

    Larger ground based systems could probably reach the whole planet.

    Equation?

    It depends on the power of your magnetic field. An ordinary 5 horse power single phase motor, can emit an emp pulse. Not very powerful, because it is designed not to do so, even when there is an accident. However the principle can be studied and then magnified, to create the powerful electromagnetic pulse.

    However large your magnetic field is, that is the area you can create your effect in. I would not fool with this. It can create x-rays in your head. Lights in your head.


    Sincerely,


    William McCormick


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  4. #3  
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    You would have to look at the power of your source. Then i would imagine the strength of the pulse is inverself proportional to the square of the distance it travels. (inverse square law)
    everything is mathematical.
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  5. #4 Re: Can you calculate an EMP? 
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    Quote Originally Posted by celtic_warrior
    EMP - electro-magnetic pulse, can disable electrical material such as phone, computers, watches, GPS, planes,...
    But can we calculate it or is it just a guess how much power it delivers? (if you think you have an equation, please leave it in your answer and specify units, thank you)
    EMP generated by a high-altitude nuclear explosion is generally specified in terms of the E-field that is generated and that appears as a transient plane wave. In specifications that I have seen the rise rate is very high, the duration is very short and the amplitude of the wave is very high. The figures that I have seen are not public, in fact are classified, and it was long enough ago that I don't remember the specific numbers anyway. The potential extent of the wave is quite large -- pretty much an entire continent, so the energy involved is very high and since the time involved is short the power is extremely high. You would expect this since the power source is a nuclear bomb.

    The energy and power can be calculated from a detailed knowledge of the E-field, but as noted above those characteristics are not publicly available.

    If you get the pulse coupled to wires running into an electronic device the chances are that upset or damage will occur. But if you do a little bit of engineering to protect the device then damage can be avoided. This is generally confirmed by a rather elaborate test.
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  6. #5 Re: Can you calculate an EMP? 
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    Quote Originally Posted by DrRocket
    Quote Originally Posted by celtic_warrior
    EMP - electro-magnetic pulse, can disable electrical material such as phone, computers, watches, GPS, planes,...
    But can we calculate it or is it just a guess how much power it delivers? (if you think you have an equation, please leave it in your answer and specify units, thank you)
    EMP generated by a high-altitude nuclear explosion is generally specified in terms of the E-field that is generated and that appears as a transient plane wave. In specifications that I have seen the rise rate is very high, the duration is very short and the amplitude of the wave is very high. The figures that I have seen are not public, in fact are classified, and it was long enough ago that I don't remember the specific numbers anyway. The potential extent of the wave is quite large -- pretty much an entire continent, so the energy involved is very high and since the time involved is short the power is extremely high. You would expect this since the power source is a nuclear bomb.

    The energy and power can be calculated from a detailed knowledge of the E-field, but as noted above those characteristics are not publicly available.

    If you get the pulse coupled to wires running into an electronic device the chances are that upset or damage will occur. But if you do a little bit of engineering to protect the device then damage can be avoided. This is generally confirmed by a rather elaborate test.
    Classified? That would be murder of American factory workers. Premeditated murder. In fact anyone involved in cover-ups is so dangerous that creating wars to create secrets, would just be part and parcel of their lives.

    What happened to the freedom of information act? That came in between nuclear test results and now.

    In my day you learned why you would never rely on digital equipment to control an aircraft. It would be suicide in a real war. In police actions like World War One, World War Two, Vietnam and Iraq, it may not matter so much.

    However some other larger country with an agenda could make you feel mighty stupid if you did rely on digital.

    Sincerely,


    William McCormick
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  7. #6 Re: Can you calculate an EMP? 
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    Quote Originally Posted by William McCormick
    Quote Originally Posted by DrRocket
    Quote Originally Posted by celtic_warrior
    EMP - electro-magnetic pulse, can disable electrical material such as phone, computers, watches, GPS, planes,...
    But can we calculate it or is it just a guess how much power it delivers? (if you think you have an equation, please leave it in your answer and specify units, thank you)
    EMP generated by a high-altitude nuclear explosion is generally specified in terms of the E-field that is generated and that appears as a transient plane wave. In specifications that I have seen the rise rate is very high, the duration is very short and the amplitude of the wave is very high. The figures that I have seen are not public, in fact are classified, and it was long enough ago that I don't remember the specific numbers anyway. The potential extent of the wave is quite large -- pretty much an entire continent, so the energy involved is very high and since the time involved is short the power is extremely high. You would expect this since the power source is a nuclear bomb.

    The energy and power can be calculated from a detailed knowledge of the E-field, but as noted above those characteristics are not publicly available.

    If you get the pulse coupled to wires running into an electronic device the chances are that upset or damage will occur. But if you do a little bit of engineering to protect the device then damage can be avoided. This is generally confirmed by a rather elaborate test.
    Classified? That would be murder of American factory workers. Premeditated murder. In fact anyone involved in cover-ups is so dangerous that creating wars to create secrets, would just be part and parcel of their lives.

    What happened to the freedom of information act? That came in between nuclear test results and now.

    In my day you learned why you would never rely on digital equipment to control an aircraft. It would be suicide in a real war. In police actions like World War One, World War Two, Vietnam and Iraq, it may not matter so much.

    However some other larger country with an agenda could make you feel mighty stupid if you did rely on digital.

    Sincerely,


    William McCormick
    Of course nuclear threat environments are classified. They are classified to preserve the survivability of our systems by concealing the levels to which they are hardened. That secrecy can save lives. Murder ? Are you insane ?

    If you don't rely on digital equipment to control a modern aircraft, you crash. It is pretty reliable, and provides the edge to allow our pilots to survive attacks by their pilots. That equipment is what makes our fighter aircraft superior to enemy aircraft and preserves the lives of our pilots. It is why in modern conflicts our enemies have not dared to so much as leave the runway -- and that provides air superiority to our troups and preserves their lives.

    Apparently your ignorance of aircraft control rivals your ignorance of nuclear effects and countermeasures and is matched by your abundant misconceptions regarding physics and mathematics in general.
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  8. #7 Re: Can you calculate an EMP? 
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    Quote Originally Posted by DrRocket
    Quote Originally Posted by William McCormick
    Quote Originally Posted by DrRocket
    Quote Originally Posted by celtic_warrior
    EMP - electro-magnetic pulse, can disable electrical material such as phone, computers, watches, GPS, planes,...
    But can we calculate it or is it just a guess how much power it delivers? (if you think you have an equation, please leave it in your answer and specify units, thank you)
    EMP generated by a high-altitude nuclear explosion is generally specified in terms of the E-field that is generated and that appears as a transient plane wave. In specifications that I have seen the rise rate is very high, the duration is very short and the amplitude of the wave is very high. The figures that I have seen are not public, in fact are classified, and it was long enough ago that I don't remember the specific numbers anyway. The potential extent of the wave is quite large -- pretty much an entire continent, so the energy involved is very high and since the time involved is short the power is extremely high. You would expect this since the power source is a nuclear bomb.

    The energy and power can be calculated from a detailed knowledge of the E-field, but as noted above those characteristics are not publicly available.

    If you get the pulse coupled to wires running into an electronic device the chances are that upset or damage will occur. But if you do a little bit of engineering to protect the device then damage can be avoided. This is generally confirmed by a rather elaborate test.
    Classified? That would be murder of American factory workers. Premeditated murder. In fact anyone involved in cover-ups is so dangerous that creating wars to create secrets, would just be part and parcel of their lives.

    What happened to the freedom of information act? That came in between nuclear test results and now.

    In my day you learned why you would never rely on digital equipment to control an aircraft. It would be suicide in a real war. In police actions like World War One, World War Two, Vietnam and Iraq, it may not matter so much.

    However some other larger country with an agenda could make you feel mighty stupid if you did rely on digital.

    Sincerely,


    William McCormick
    Of course nuclear threat environments are classified. They are classified to preserve the survivability of our systems by concealing the levels to which they are hardened. That secrecy can save lives. Murder ? Are you insane ?

    If you don't rely on digital equipment to control a modern aircraft, you crash. It is pretty reliable, and provides the edge to allow our pilots to survive attacks by their pilots. That equipment is what makes our fighter aircraft superior to enemy aircraft and preserves the lives of our pilots. It is why in modern conflicts our enemies have not dared to so much as leave the runway -- and that provides air superiority to our troups and preserves their lives.

    Apparently your ignorance of aircraft control rivals your ignorance of nuclear effects and countermeasures and is matched by your abundant misconceptions regarding physics and mathematics in general.

    Well it appears you apparently believe what you were taught. That still does not make it correct.

    Digital equipment has a variety of weaknesses. And was originally not used in any necessary way.

    Later as those in law making positions, saw the unstoppable nature of electronics light aircraft, and their jamming systems. They deemed them to unsafe, in the hands of the Marines, Navy and Airforce men that would have control of them.

    The vale of silence, types are just to funny to me. They are the retards that often by their lies and cover-ups, cause an enemy to strike to hard. Or to cause damage to the earth, in what they believe is necessary force to penetrate such a fortification.

    Some small Chinese military faction might be working on a bomb that can penetrate 386 feet deep into the earth, right now. But it might cause global destruction. All because of lies and cover ups and secrets or rumors about installations that may not even exist.

    But because we claim to have secret installations, they have to calculate for the extreme. The unknown. The unknown is what we accused the Russians of, during the cold war. We claimed they had unknown installations over there in Russia. We accused NAZI Germany of having and conducting secret experiments in Germany. Look what happened to them.

    This is an honest country, that shows its honest might. It is a country where any citizen can go downtown and take back his country with a total recall. That is what America is founded on.

    "Nothing deserves your utter most patronage, more then the promotion of science and literature. Knowledge is in every country the surest basis of public happiness". George Washington.

    That does not say that one country or some country should have secrets. How could a country with secrets stop another country from doing anything openly. They could not. Because the secret country hiding behind the vale of silence could be doing much, much worse. But they can't talk about it.

    What George Washington said not to do, or share. Was the manufacture or supply of staple crops or products with other countries. In other words we are not supposed to rely on Canada for wheat, meat, or any other staple product. China as well should not be relied upon for staple products, no country other then the United States should supply the United States with Staple products.

    To have much of our steel produced in other countries is very dangerous. The list goes on and on, of what should not be shared with other countries. But that is allowed and it should not be. Yet they want to keep the number of walls or the type of material a bomb shelter is made of from other countries? Ha-ha.

    I would bet some materials from other countries made it into those facilities. Ha-ha.

    The English right now, probably could tell you to the minute, how long it would take a certain portion of individuals that eat Canadian meat or wheat, in America, to become infected or contaminated with a certain chemical put into such meat, or wheat, down to the minute.
    Along with the numbers of Americans that would get infected or poisoned, over a certain period. That is what you do not share with your neighbors.



    Sincerely,


    William McCormick
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  9. #8  
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    Quote Originally Posted by William McCormick
    Well it appears you apparently believe what you were taught. That still does not make it correct.
    Now tell me why you are any different.
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  10. #9  
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    Quote Originally Posted by MagiMaster
    Quote Originally Posted by William McCormick
    Well it appears you apparently believe what you were taught. That still does not make it correct.
    Now tell me why you are any different.
    Because sir, I lived with this stuff. I saw the stuff that no longer exists. I used and tested the stuff I talk about.



    Sincerely,


    William McCormick
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  11. #10  
    Forum Radioactive Isotope MagiMaster's Avatar
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    So... what makes you any different again?
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  12. #11  
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    You have to admit the warning at the bottom of each of his posts is delightful. :wink:
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  13. #12  
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    Quote Originally Posted by MagiMaster
    So... what makes you any different again?
    You do not know that perpetual motion exists. You do not work with this stuff.


    Sincerely,


    William McCormick
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  14. #13  
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    So, again, what makes us different?

    (If you actually did work with this stuff, you should have been able to offer more than words by now. Since you haven't, you don't.)
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  15. #14  
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    Quote Originally Posted by MagiMaster
    So, again, what makes us different?

    (If you actually did work with this stuff, you should have been able to offer more than words by now. Since you haven't, you don't.)
    I have shown that you can double the wattage feed into a circuit. By using an in line or in series capacitor along with the load.

    But no one here has ever measured the effect for themselves and therefore fight it, based on rumor.

    Sincerely,


    William McCormick
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  16. #15  
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    Quote Originally Posted by MagiMaster
    So... what makes you any different again?
    Oh, he's different all right.
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  17. #16  
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    Quote Originally Posted by William McCormick
    Quote Originally Posted by MagiMaster
    So, again, what makes us different?

    (If you actually did work with this stuff, you should have been able to offer more than words by now. Since you haven't, you don't.)
    I have shown that you can double the wattage feed into a circuit. By using an in line or in series capacitor along with the load.

    But no one here has ever measured the effect for themselves and therefore fight it, based on rumor.
    No, you have said you can double the wattage. You have not shown anything.

    Last time I hooked a light, a battery and a capacitor up in series, the light didn't even stay on. As soon as the capacitor charged, the light went out. So unless you've got a weird definition of 'in series', I can't imagine what you think you're showing.
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  18. #17 Re: Can you calculate an EMP? 
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    Quote Originally Posted by DrRocket
    The energy and power can be calculated from a detailed knowledge of the E-field, but as noted above those characteristics are not publicly available.
    I would think any any physics grad student should be able to approximately calculate the emp strength, since it doesn't really involve any particularly exotic physics. The spectral output of an exploding nuclear bomb are probably pretty well known. Just model the emp based on how many electrons you expect the blast to knock off atmospheric molecules, the strength of the earth's magnetic field at varying altitudes, an electron's mean free path, etc. It would be fairly complicated, but I suspect that someone who bothered to crank through the math would get a more-or-less correct answer.
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  19. #18 Re: Can you calculate an EMP? 
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    Quote Originally Posted by Scifor Refugee
    Quote Originally Posted by DrRocket
    The energy and power can be calculated from a detailed knowledge of the E-field, but as noted above those characteristics are not publicly available.
    I would think any any physics grad student should be able to approximately calculate the emp strength, since it doesn't really involve any particularly exotic physics. The spectral output of an exploding nuclear bomb are probably pretty well known. Just model the emp based on how many electrons you expect the blast to knock off atmospheric molecules, the strength of the earth's magnetic field at varying altitudes, an electron's mean free path, etc. It would be fairly complicated, but I suspect that someone who bothered to crank through the math would get a more-or-less correct answer.
    You might be able to do that, but I think that the specific characteristics of the nuclear blast, particularly the rise time and magnitude of the x-ray pulse that intereacts with the atmospheric molecules are not readily available. They are important characteristics of the EMP pulse.

    I am quite sure that the x-ray rise times and spectral characteristics are classified. There has been quite a bit of modeling work for nuclear blast characteristics, to which I am not privy, done since the cessation of underground tests. But during the time in which the tests were conducted the analytical models were not always good enough to assessment of hardness.

    The usefulness of modeling would depend strongly on what you intend to do with the model. If you just want a very general idea of what the pulse would be like, then a model that could be constructed by a physics grad student might be quite adequate. If you want to define the threat sufficiently well so that you can engineer mitigation and validate the effectiveness of that mitigation then I suspect that any but the most sophisticated models would not be good enough.

    On the other hand, the EMP specifications for nuclear weapons come from somewhere, and not from actual high-altitude exlosions. There have to be models used to come up with the specifications. But they would have the advantage of measurements of the x-ray pulse from many underground tests. The pulse itself is sufficiently well specified that it possible to perform EMP hardness tests with an apparatus that produces a pulse of non-nuclear origin -- full scale and threat level.
    http://works.bepress.com/cgi/viewcon...george_h_baker
    http://www.egginc.com/albuquerque/TSS-E3.htm
    http://www.cerezo.name/archives/000006.html

    The frequency spectrum of the pulse (basically equivalent to rise time) is an important characteristic in assessing effects on electronic equipment. Generally the frequency content is quite high, which helps in devising protective measures.
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  20. #19  
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    Quote Originally Posted by MagiMaster
    Quote Originally Posted by William McCormick
    Quote Originally Posted by MagiMaster
    So, again, what makes us different?

    (If you actually did work with this stuff, you should have been able to offer more than words by now. Since you haven't, you don't.)
    I have shown that you can double the wattage feed into a circuit. By using an in line or in series capacitor along with the load.

    But no one here has ever measured the effect for themselves and therefore fight it, based on rumor.
    No, you have said you can double the wattage. You have not shown anything.

    Last time I hooked a light, a battery and a capacitor up in series, the light didn't even stay on. As soon as the capacitor charged, the light went out. So unless you've got a weird definition of 'in series', I can't imagine what you think you're showing.


    A charged capacitor acts like a battery.

    And how do you charge a capacitor? How are the terminals attached to battery? When the capacitor charges, realize how the battery terminals are connected with the capacitor. Then you now know why light goes out.
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  21. #20  
    Forum Radioactive Isotope MagiMaster's Avatar
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    I was just wondering if William even knew that the light did go out.
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  22. #21  
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    Quote Originally Posted by CoolEJ
    Quote Originally Posted by MagiMaster
    Quote Originally Posted by William McCormick
    Quote Originally Posted by MagiMaster
    So, again, what makes us different?

    (If you actually did work with this stuff, you should have been able to offer more than words by now. Since you haven't, you don't.)
    I have shown that you can double the wattage feed into a circuit. By using an in line or in series capacitor along with the load.

    But no one here has ever measured the effect for themselves and therefore fight it, based on rumor.
    No, you have said you can double the wattage. You have not shown anything.

    Last time I hooked a light, a battery and a capacitor up in series, the light didn't even stay on. As soon as the capacitor charged, the light went out. So unless you've got a weird definition of 'in series', I can't imagine what you think you're showing.


    A charged capacitor acts like a battery.

    And how do you charge a capacitor? How are the terminals attached to battery? When the capacitor charges, realize how the battery terminals are connected with the capacitor. Then you now know why light goes out.
    No, a charged capacitor does not act like a battery. A fully charged battery is fairly accurately described as a constant voltage source with an internal resistance. The voltage across a capacitor is proportional to the charge on the capacitor and decays quickly when a load is connected across a charged capacitor.

    In the circuit described, a capacitor in series with a resistive light bulb, the terminals of the battery are connected to one end of the capacitor and one end of the light bulb filament. The reason that the light bulb goes out, and rather quickly, is that the voltage build-up on the capacitor opposes the voltage of the battery and when the two become nearly equal the current flow becomes too low to heat the filament of the light bulb to incandescence. This is a problem given to electrical engineering students very early in their very first ciruit theory course.

    Contrary to William's statement that no one has tried this for themselves, it is an extremely elementary ciruit theory experiment. The currents and voltages are very easily calculated as functions of time and just as easily measured and recorded. And those calculations and measurements confirm quite clearly that William does not know what he is talking about. As usual.
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  23. #22 Re: Can you calculate an EMP? 
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    Quote Originally Posted by William McCormick
    Quote Originally Posted by DrRocket
    Quote Originally Posted by William McCormick
    Quote Originally Posted by DrRocket
    Quote Originally Posted by celtic_warrior
    EMP - electro-magnetic pulse, can disable electrical material such as phone, computers, watches, GPS, planes,...
    But can we calculate it or is it just a guess how much power it delivers? (if you think you have an equation, please leave it in your answer and specify units, thank you)
    EMP generated by a high-altitude nuclear explosion is generally specified in terms of the E-field that is generated and that appears as a transient plane wave. In specifications that I have seen the rise rate is very high, the duration is very short and the amplitude of the wave is very high. The figures that I have seen are not public, in fact are classified, and it was long enough ago that I don't remember the specific numbers anyway. The potential extent of the wave is quite large -- pretty much an entire continent, so the energy involved is very high and since the time involved is short the power is extremely high. You would expect this since the power source is a nuclear bomb.

    The energy and power can be calculated from a detailed knowledge of the E-field, but as noted above those characteristics are not publicly available.

    If you get the pulse coupled to wires running into an electronic device the chances are that upset or damage will occur. But if you do a little bit of engineering to protect the device then damage can be avoided. This is generally confirmed by a rather elaborate test.
    Classified? That would be murder of American factory workers. Premeditated murder. In fact anyone involved in cover-ups is so dangerous that creating wars to create secrets, would just be part and parcel of their lives.

    What happened to the freedom of information act? That came in between nuclear test results and now.

    In my day you learned why you would never rely on digital equipment to control an aircraft. It would be suicide in a real war. In police actions like World War One, World War Two, Vietnam and Iraq, it may not matter so much.

    However some other larger country with an agenda could make you feel mighty stupid if you did rely on digital.

    Sincerely,


    William McCormick
    Of course nuclear threat environments are classified. They are classified to preserve the survivability of our systems by concealing the levels to which they are hardened. That secrecy can save lives. Murder ? Are you insane ?

    If you don't rely on digital equipment to control a modern aircraft, you crash. It is pretty reliable, and provides the edge to allow our pilots to survive attacks by their pilots. That equipment is what makes our fighter aircraft superior to enemy aircraft and preserves the lives of our pilots. It is why in modern conflicts our enemies have not dared to so much as leave the runway -- and that provides air superiority to our troups and preserves their lives.

    Apparently your ignorance of aircraft control rivals your ignorance of nuclear effects and countermeasures and is matched by your abundant misconceptions regarding physics and mathematics in general.

    Well it appears you apparently believe what you were taught. That still does not make it correct.

    Digital equipment has a variety of weaknesses. And was originally not used in any necessary way.

    Later as those in law making positions, saw the unstoppable nature of electronics light aircraft, and their jamming systems. They deemed them to unsafe, in the hands of the Marines, Navy and Airforce men that would have control of them.

    The vale of silence, types are just to funny to me. They are the retards that often by their lies and cover-ups, cause an enemy to strike to hard. Or to cause damage to the earth, in what they believe is necessary force to penetrate such a fortification.

    Some small Chinese military faction might be working on a bomb that can penetrate 386 feet deep into the earth, right now. But it might cause global destruction. All because of lies and cover ups and secrets or rumors about installations that may not even exist.

    But because we claim to have secret installations, they have to calculate for the extreme. The unknown. The unknown is what we accused the Russians of, during the cold war. We claimed they had unknown installations over there in Russia. We accused NAZI Germany of having and conducting secret experiments in Germany. Look what happened to them.

    This is an honest country, that shows its honest might. It is a country where any citizen can go downtown and take back his country with a total recall. That is what America is founded on.

    "Nothing deserves your utter most patronage, more then the promotion of science and literature. Knowledge is in every country the surest basis of public happiness". George Washington.

    That does not say that one country or some country should have secrets. How could a country with secrets stop another country from doing anything openly. They could not. Because the secret country hiding behind the vale of silence could be doing much, much worse. But they can't talk about it.

    What George Washington said not to do, or share. Was the manufacture or supply of staple crops or products with other countries. In other words we are not supposed to rely on Canada for wheat, meat, or any other staple product. China as well should not be relied upon for staple products, no country other then the United States should supply the United States with Staple products.

    To have much of our steel produced in other countries is very dangerous. The list goes on and on, of what should not be shared with other countries. But that is allowed and it should not be. Yet they want to keep the number of walls or the type of material a bomb shelter is made of from other countries? Ha-ha.

    I would bet some materials from other countries made it into those facilities. Ha-ha.

    The English right now, probably could tell you to the minute, how long it would take a certain portion of individuals that eat Canadian meat or wheat, in America, to become infected or contaminated with a certain chemical put into such meat, or wheat, down to the minute.
    Along with the numbers of Americans that would get infected or poisoned, over a certain period. That is what you do not share with your neighbors.



    Sincerely,


    William McCormick
    I have seen enough of your posts to need to ask this question. I am at a loss as to how to respond to your posts for the benefit of both yourself and what I would thing might me quite a few young people who are lurking.

    Do you really believe all of the crap in your posts or are you simply posting this nonsense to see what response you get from others ?

    The range of nonsense is staggering, and I am hard pressed to believe that you can actually believe so many utter ridiculous ideas. You have dismissed, with no basis whatever, not only all of what is known about physics, but a large part of what has been rigorously derived and proved in mathematics. I find it hard to believe that anyone with such an apparently distorted view of how the world works can actually function on a day-to-day basis. I would expect extreme difficulty with even the simple acts of feeding onseself, dressing, and crossing the street.

    Come on. You're putting us one aren't you ?
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  24. #23  
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    No, a charged capacitor does not act like a battery. A fully charged battery is fairly accurately described as a constant voltage source with an internal resistance. The voltage across a capacitor is proportional to the charge on the capacitor and decays quickly when a load is connected across a charged capacitor.

    When you do circuit diagram (@ capacitor full charge), the capacitor is marked as a voltage source, which makes it act like a battery.

    Continuing on, considering the circuit being presented here, the Voltage will be the same with the battery but with opposite polarity.
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  25. #24  
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    Quote Originally Posted by CoolEJ
    No, a charged capacitor does not act like a battery. A fully charged battery is fairly accurately described as a constant voltage source with an internal resistance. The voltage across a capacitor is proportional to the charge on the capacitor and decays quickly when a load is connected across a charged capacitor.

    When you do circuit diagram (@ capacitor full charge), the capacitor is marked as a voltage source, which makes it act like a battery.

    Continuing on, considering the circuit being presented here, the Voltage will be the same with the battery but with opposite polarity.
    Either you don't understand what I said or your circuit diagram is faulty. A capacitor does not maintain a constant voltage as does a voltage source. The voltage across a capacitor decays as current flows from it and the stored charge is reduced.
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  26. #25 Re: Can you calculate an EMP? 
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    Quote Originally Posted by DrRocket
    You might be able to do that, but I think that the specific characteristics of the nuclear blast, particularly the rise time and magnitude of the x-ray pulse that intereacts with the atmospheric molecules are not readily available...

    The frequency spectrum of the pulse (basically equivalent to rise time) is an important characteristic in assessing effects on electronic equipment. Generally the frequency content is quite high, which helps in devising protective measures.
    I might just be naive about this, but I would think that it would be pretty easy to model the spectral characteristics. Fission and fusion are just too well-understood for the details of the process to be very secret, although I don't doubt that the actual test data is quite secret. The only thing that might be difficult to model would be the mess of Auger effects that you would get in the atmosphere.

    Although to be clear I'm only talking about getting within the ballpark of the correct answer. I suspect that this sort of simplistic model would be correct within an order of magnitude or so.

    Also, word to the wise about William McCormick; don't bother. He's impervious to rational discussion. Just add him to your ignore list and move on with life.
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  27. #26  
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    Quote Originally Posted by MagiMaster
    Quote Originally Posted by William McCormick
    Quote Originally Posted by MagiMaster
    So, again, what makes us different?

    (If you actually did work with this stuff, you should have been able to offer more than words by now. Since you haven't, you don't.)
    I have shown that you can double the wattage feed into a circuit. By using an in line or in series capacitor along with the load.

    But no one here has ever measured the effect for themselves and therefore fight it, based on rumor.
    No, you have said you can double the wattage. You have not shown anything.

    Last time I hooked a light, a battery and a capacitor up in series, the light didn't even stay on. As soon as the capacitor charged, the light went out. So unless you've got a weird definition of 'in series', I can't imagine what you think you're showing.
    That is exactly what is supposed to happen. Now that you have done that, you can take the capacitor and light the light bulb again. With power that was stored, with the power it took to light the light bulb with the battery. Creating the second half of an AC cycle, very much like the AC current you use in your home. The AC current in your home turns on and off. It just happens more quickly, then you can switch from the battery to just the capacitor. But the second half of the cycle is for free.


    Sincerely,


    William McCormick
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  28. #27 Re: Can you calculate an EMP? 
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    Quote Originally Posted by DrRocket
    Quote Originally Posted by William McCormick
    Quote Originally Posted by DrRocket
    Quote Originally Posted by William McCormick
    Quote Originally Posted by DrRocket
    Quote Originally Posted by celtic_warrior
    EMP - electro-magnetic pulse, can disable electrical material such as phone, computers, watches, GPS, planes,...
    But can we calculate it or is it just a guess how much power it delivers? (if you think you have an equation, please leave it in your answer and specify units, thank you)
    EMP generated by a high-altitude nuclear explosion is generally specified in terms of the E-field that is generated and that appears as a transient plane wave. In specifications that I have seen the rise rate is very high, the duration is very short and the amplitude of the wave is very high. The figures that I have seen are not public, in fact are classified, and it was long enough ago that I don't remember the specific numbers anyway. The potential extent of the wave is quite large -- pretty much an entire continent, so the energy involved is very high and since the time involved is short the power is extremely high. You would expect this since the power source is a nuclear bomb.

    The energy and power can be calculated from a detailed knowledge of the E-field, but as noted above those characteristics are not publicly available.

    If you get the pulse coupled to wires running into an electronic device the chances are that upset or damage will occur. But if you do a little bit of engineering to protect the device then damage can be avoided. This is generally confirmed by a rather elaborate test.
    Classified? That would be murder of American factory workers. Premeditated murder. In fact anyone involved in cover-ups is so dangerous that creating wars to create secrets, would just be part and parcel of their lives.

    What happened to the freedom of information act? That came in between nuclear test results and now.

    In my day you learned why you would never rely on digital equipment to control an aircraft. It would be suicide in a real war. In police actions like World War One, World War Two, Vietnam and Iraq, it may not matter so much.

    However some other larger country with an agenda could make you feel mighty stupid if you did rely on digital.

    Sincerely,


    William McCormick
    Of course nuclear threat environments are classified. They are classified to preserve the survivability of our systems by concealing the levels to which they are hardened. That secrecy can save lives. Murder ? Are you insane ?

    If you don't rely on digital equipment to control a modern aircraft, you crash. It is pretty reliable, and provides the edge to allow our pilots to survive attacks by their pilots. That equipment is what makes our fighter aircraft superior to enemy aircraft and preserves the lives of our pilots. It is why in modern conflicts our enemies have not dared to so much as leave the runway -- and that provides air superiority to our troups and preserves their lives.

    Apparently your ignorance of aircraft control rivals your ignorance of nuclear effects and countermeasures and is matched by your abundant misconceptions regarding physics and mathematics in general.

    Well it appears you apparently believe what you were taught. That still does not make it correct.

    Digital equipment has a variety of weaknesses. And was originally not used in any necessary way.

    Later as those in law making positions, saw the unstoppable nature of electronics light aircraft, and their jamming systems. They deemed them to unsafe, in the hands of the Marines, Navy and Airforce men that would have control of them.

    The vale of silence, types are just to funny to me. They are the retards that often by their lies and cover-ups, cause an enemy to strike to hard. Or to cause damage to the earth, in what they believe is necessary force to penetrate such a fortification.

    Some small Chinese military faction might be working on a bomb that can penetrate 386 feet deep into the earth, right now. But it might cause global destruction. All because of lies and cover ups and secrets or rumors about installations that may not even exist.

    But because we claim to have secret installations, they have to calculate for the extreme. The unknown. The unknown is what we accused the Russians of, during the cold war. We claimed they had unknown installations over there in Russia. We accused NAZI Germany of having and conducting secret experiments in Germany. Look what happened to them.

    This is an honest country, that shows its honest might. It is a country where any citizen can go downtown and take back his country with a total recall. That is what America is founded on.

    "Nothing deserves your utter most patronage, more then the promotion of science and literature. Knowledge is in every country the surest basis of public happiness". George Washington.

    That does not say that one country or some country should have secrets. How could a country with secrets stop another country from doing anything openly. They could not. Because the secret country hiding behind the vale of silence could be doing much, much worse. But they can't talk about it.

    What George Washington said not to do, or share. Was the manufacture or supply of staple crops or products with other countries. In other words we are not supposed to rely on Canada for wheat, meat, or any other staple product. China as well should not be relied upon for staple products, no country other then the United States should supply the United States with Staple products.

    To have much of our steel produced in other countries is very dangerous. The list goes on and on, of what should not be shared with other countries. But that is allowed and it should not be. Yet they want to keep the number of walls or the type of material a bomb shelter is made of from other countries? Ha-ha.

    I would bet some materials from other countries made it into those facilities. Ha-ha.

    The English right now, probably could tell you to the minute, how long it would take a certain portion of individuals that eat Canadian meat or wheat, in America, to become infected or contaminated with a certain chemical put into such meat, or wheat, down to the minute.
    Along with the numbers of Americans that would get infected or poisoned, over a certain period. That is what you do not share with your neighbors.



    Sincerely,


    William McCormick
    I have seen enough of your posts to need to ask this question. I am at a loss as to how to respond to your posts for the benefit of both yourself and what I would thing might me quite a few young people who are lurking.

    Do you really believe all of the crap in your posts or are you simply posting this nonsense to see what response you get from others ?

    The range of nonsense is staggering, and I am hard pressed to believe that you can actually believe so many utter ridiculous ideas. You have dismissed, with no basis whatever, not only all of what is known about physics, but a large part of what has been rigorously derived and proved in mathematics. I find it hard to believe that anyone with such an apparently distorted view of how the world works can actually function on a day-to-day basis. I would expect extreme difficulty with even the simple acts of feeding onseself, dressing, and crossing the street.

    Come on. You're putting us one aren't you ?
    I most certainly do stand behind what I say. And I even have my real name up there.

    Higher math at this point is just a theory, because you first need standards, a language with standard definitions, standard demonstrable science, and chemistry. In order to practice math, more complex then at an Iraqi market place.

    At this point higher math is just a dream.

    Many people on this forum and yourself did not even understand the basic circuit.

    With just ohms law, you can show that a battery in series with a capacitor, and light bulb. Will use no more energy then the light bulb alone. So when you are done lighting your light bulb. The energy stored in your capacitor is free. And you can mimic the first lighting with a second lighting for free.

    This is not really debatable, unless you are some kind of fool.





    Sincerely,


    William McCormick
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  29. #28  
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    Higher math may be a theory to you, but that's just because you don't want to learn it.

    Also, I'd say if 99% of people agree on a definition, then it's standard. If you happen to be in that 1% that doesn't, it's still standard. Again, you are not special.

    If you want us to take you a little more seriously, you could start by showing this using just Ohm's law. Let me ask you one question though. Do you think that a partially charged capacitor acts somewhat like a resistor to direct current, that is, it resists further attempts to charge it?
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  30. #29  
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    Quote Originally Posted by DrRocket
    Quote Originally Posted by CoolEJ
    No, a charged capacitor does not act like a battery. A fully charged battery is fairly accurately described as a constant voltage source with an internal resistance. The voltage across a capacitor is proportional to the charge on the capacitor and decays quickly when a load is connected across a charged capacitor.

    When you do circuit diagram (@ capacitor full charge), the capacitor is marked as a voltage source, which makes it act like a battery.

    Continuing on, considering the circuit being presented here, the Voltage will be the same with the battery but with opposite polarity.
    Either you don't understand what I said or your circuit diagram is faulty. A capacitor does not maintain a constant voltage as does a voltage source. The voltage across a capacitor decays as current flows from it and the stored charge is reduced.

    Analyzing capacitor in a circuit invovles more than 1 state. Summing it all in one is not always correct.

    You have the circuit diagram at charging time, fully charged, and discharging time.

    I may have commited a mistake in making a general assumption on the fully charged state...But at this state, a capacitor is considered as voltage source.
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  31. #30 Re: Can you calculate an EMP? 
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    Quote Originally Posted by Scifor Refugee
    Quote Originally Posted by DrRocket
    You might be able to do that, but I think that the specific characteristics of the nuclear blast, particularly the rise time and magnitude of the x-ray pulse that intereacts with the atmospheric molecules are not readily available...

    The frequency spectrum of the pulse (basically equivalent to rise time) is an important characteristic in assessing effects on electronic equipment. Generally the frequency content is quite high, which helps in devising protective measures.
    I might just be naive about this, but I would think that it would be pretty easy to model the spectral characteristics. Fission and fusion are just too well-understood for the details of the process to be very secret, although I don't doubt that the actual test data is quite secret. The only thing that might be difficult to model would be the mess of Auger effects that you would get in the atmosphere.

    Although to be clear I'm only talking about getting within the ballpark of the correct answer. I suspect that this sort of simplistic model would be correct within an order of magnitude or so.

    Also, word to the wise about William McCormick; don't bother. He's impervious to rational discussion. Just add him to your ignore list and move on with life.
    You might well be able to get within an order of magnitude or so. I doubt that you could do much better as you would need to get hard data on specific quantities of fissionable and fusable materials, and the detailed dynamics in order to get rise times, etc. And the rise times are very important in determining the frequency content of the pulse.

    I think the details of how the fission reaction is used to both heat and confine the fusion reaction is pretty secret. I know that I don't know them. I think that the details of the dynamics of the fission reaction -- how the fissionable material is brought together, the spedific geometries snd the timing are also pretty secret, particularly insofar as they are used in thermonuclear devices. I don't think the methods used for relatively inefficient fission devices are quite so secret, although again this is something that I don't know.

    But for an order of magnitude or so, I don't doubt that some educated guess could be made that would suffice.

    Here is an older government document that describes an EMP pulse.

    http://digital.library.unt.edu/govdo...eta-crs-9172:1
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    Quote Originally Posted by MagiMaster
    Higher math may be a theory to you, but that's just because you don't want to learn it.

    Also, I'd say if 99% of people agree on a definition, then it's standard. If you happen to be in that 1% that doesn't, it's still standard. Again, you are not special.

    If you want us to take you a little more seriously, you could start by showing this using just Ohm's law. Let me ask you one question though. Do you think that a partially charged capacitor acts somewhat like a resistor to direct current, that is, it resists further attempts to charge it?
    Well in the city of Sodom and Gomorrah a good time meant sex with kids. And although you would argue that is what a good time is. I stand firm that they had the term and definition screwed up.

    Sincerely,


    William McCormick
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  33. #32  
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    Quote Originally Posted by MagiMaster
    Higher math may be a theory to you, but that's just because you don't want to learn it.

    Also, I'd say if 99% of people agree on a definition, then it's standard. If you happen to be in that 1% that doesn't, it's still standard. Again, you are not special.

    If you want us to take you a little more seriously, you could start by showing this using just Ohm's law. Let me ask you one question though. Do you think that a partially charged capacitor acts somewhat like a resistor to direct current, that is, it resists further attempts to charge it?
    You believe a definition of something, is just a vote. And although a bunch of bullies can make that appear so, at times. It will be shown that those bullies run like cockroaches when in the light of truth.

    Sincerely,


    William McCormick
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  34. #33  
    Forum Radioactive Isotope MagiMaster's Avatar
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    William, you're attempts to make a point are getting duller and duller.

    Now can you tell me where a definition for something comes from if not the consensus of the people using the word?
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  35. #34  
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    Quote Originally Posted by MagiMaster
    William, you're attempts to make a point are getting duller and duller.

    Now can you tell me where a definition for something comes from if not the consensus of the people using the word?
    "He is not only dull himself, he is the cause of dullness in others."
    Samuel Johnson
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