Microwave brain scrambler?
in [Design]
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From: Bill Sloman on 12 Mar 2010 06:39 On Mar 11, 3:47 pm, Winston <Wins...(a)bigbrother.net> wrote: > Could you use amplitude modulated microwaves to disable a bad guy? > > Picture this: > A robber enters a restaurant, swings a pistol around and demands money. > > Secreted in the ceiling of the dining room is a microwave transmitter > equipped with a parabolic dish that can be aimed to cover any portion > of the eating area. > > The manager, monitoring the situation from his office, aims the > transmitter at the robber, dials in an appropriate power > level and pushes the 'go' button. The pulses of microwave power > mimic and disrupt normal brain activity through calcium efflux, > paralyzing the bad guy until police arrive. > > The science appears solid. Have a look at: > > Adey, W. Ross, Neurophysiologic Effects of Radiofrequency and Microwave > Radiation, Bulletin of the New York Academy of Medicine, V.55, #11, December, 1979 > > Bioelectromagnetics > Volume 5 Issue 1, Pages 71 - 78 > Published Online: 19 Oct 2005 > > As the article states, one wouldn't need a lot of power. > In the cited experiment, 1 mW/g was sufficient to induce calcium > ion efflux in human neuroblastoma cells. > > The transmitter could pay for itself in no time even if no robber appears: > * Defusing altercations between customers and wait staff > * Tailoring the customer demographic > * Providing entertainment for bored management > * Exploiting induced suggestibility to enhance performance feedback > > There are some downsides such as eye cataracts, an increase in > susceptibility to leukemia and bacterial brain damage due to > violations of the blood/brain barrier. Those are hardly important when > you consider how funny it would be to watch random customers stand there, > gobsmacked as you rearrange their brain from the comfort of your office. > > What do you think about this? I think you haven't done any background reading. This is the real stuff, for what it is worth. http://en.wikipedia.org/wiki/Transcranial_magnetic_stimulation Microwaves would - at best - cook the brain, though the scalp and skull would absorb a lot more of the power being directed at the head. -- Bill Sloman, Nijmegen
From: Winston on 12 Mar 2010 09:43 On 3/12/2010 3:39 AM, Bill Sloman wrote: > On Mar 11, 3:47 pm, Winston<Wins...(a)bigbrother.net> wrote: >> Could you use amplitude modulated microwaves to disable a bad guy? >> (...) >> There are some downsides such as eye cataracts, an increase in >> susceptibility to leukemia and bacterial brain damage due to >> violations of the blood/brain barrier. Those are hardly important when >> you consider how funny it would be to watch random customers stand there, >> gobsmacked as you rearrange their brain from the comfort of your office. >> >> What do you think about this? > > I think you haven't done any background reading. This is the real > stuff, for what it is worth. > > http://en.wikipedia.org/wiki/Transcranial_magnetic_stimulation > > Microwaves would - at best - cook the brain, though the scalp and > skull would absorb a lot more of the power being directed at the head. > > -- > Bill Sloman, Nijmegen I think we agree that one can induce current flow in portions of the brain using direct electrodes, magnetic coupling or induction from an electromagnetic wave. Of the three methods in use, only electromagnetic coupling has any practical potential for use as a security / entertainment tool to disable bad guys or to seriously injure innocent customers and employees. I expect that you understand the reasons why this is so. I respectfully disagree about microwave's potential as a carrier for the differentiated EMF offset necessary to carry out this sort of manipulation. As it says in the article I quoted, there is a 'window' of power level and modulation rate (~1 mW/cm^2, 6-20 Hz) that swamps out the electrical signals normally present in areas of the brain as part of their normal function. The R.F. carrier appears to integrate an A.C. offset in brain tissue capable of mimicking and replacing valid signals of the type one would normally see presented on an E.E.G. This is more sophisticated and subtle than mere tissue heating. I find it significant, for example that the associated flow of calcium in the subject tissue actually decreases as power level increases out of the 'window' area of ~1 mW/cm^2 or at modulation frequencies below 6 Hz or above 20 Hz. Adey, W. Ross, Neurophysiologic Effects of Radiofrequency and Microwave Radiation, Bulletin of the New York Academy of Medicine, V.55, #11, December, 1979 I agree that in Adey's experiments, only 147 MHz and 450 MHz RF were used as a coupling carrier. That supports the theory that carrier frequency itself is unimportant as long as any amplitude offset can be integrated in brain tissue to form a virtual electrode. At the risk of stating the obvious, a parabolic antenna small enough to be concealed above a dropped ceiling would be much more directional and effective with increasing carrier frequency. Thanks, Bill. --Winston
From: osr on 12 Mar 2010 13:29 You dont get it! 1 mW/Cm^2 does NOT penetrate the skull with enough power to do biological anything. Period, DENADA! You must be the new green Xenon/Radium etc Go away troll, you have NO clue about RF physics. The effect of which you speak does not exist, or nobody would be painting AM or FM transmitter towers with the power on... Which is done all the time.. Steve
From: AZ Nomad on 12 Mar 2010 13:46 On Thu, 11 Mar 2010 06:47:07 -0800, Winston <Winston(a)bigbrother.net> wrote: >Could you use amplitude modulated microwaves to disable a bad guy? >Picture this: >A robber enters a restaurant, swings a pistol around and demands money. >Secreted in the ceiling of the dining room is a microwave transmitter >equipped with a parabolic dish that can be aimed to cover any portion >of the eating area. >The manager, monitoring the situation from his office, aims the >transmitter at the robber, dials in an appropriate power >level and pushes the 'go' button. The pulses of microwave power >mimic and disrupt normal brain activity through calcium efflux, >paralyzing the bad guy until police arrive. >The science appears solid. Have a look at: As long as the workers doesn't mind the effects on themselves. Such toys invariable nail the owner more than any would be thief. After you discover that the robber is actually a friend of the cashier and joking around and you lay him on the ground, make plans to sell off the business to pay legal costs and to spend a nice amount of time in jail. Put a revolver under the register if you have such a problem with robbery.
From: Dave Platt on 12 Mar 2010 14:23
>>Could you use amplitude modulated microwaves to disable a bad guy? > >>Picture this: >>A robber enters a restaurant, swings a pistol around and demands money. > >>Secreted in the ceiling of the dining room is a microwave transmitter >>equipped with a parabolic dish that can be aimed to cover any portion >>of the eating area. > >>The manager, monitoring the situation from his office, aims the >>transmitter at the robber, dials in an appropriate power >>level and pushes the 'go' button. The pulses of microwave power >>mimic and disrupt normal brain activity through calcium efflux, >>paralyzing the bad guy until police arrive. > >>The science appears solid. Have a look at: > >As long as the workers doesn't mind the effects on themselves. >Such toys invariable nail the owner more than any would be thief. Yup. The OP ought to dig back through the archives, and read up on some of the cases where property owners have created dangerous or lethal "man-traps" to deter burglary or vandalism. Sometimes these end up killing innocent people... and the property owners face manslaughter charges and massive civil lawsuits for wrongful death from the families of those killed. Sometimes these end up killing or injuring burglars and vandals... and the property owners go to prison for manslaughter, and also end up being sued by the burglars or their families. In most jurisdications, it is *not* legally permissible to use deadly or potentially-deadly force merely to protect property. >After you discover that the robber is actually a friend of the cashier >and joking around and you lay him on the ground, make plans to sell >off the business to pay legal costs and to spend a nice amount of time >in jail. Equivalently-bad scenario: there *is* an armed robber, the manager zaps him with hidden the "microwave convulsion beam", the robber collapses... and the beam also hits a diner or two at the next table, and *they* collapse or go blind or go into convulsions. Having two or more people (one robber plus N innocents) affected in the same way, at the same time, is going to clue *somebody* off to the fact that something weird is going on! The OP seems to be taking the position that "This isn't a crime, because it won't be detected and the person the zapping can't be accused." A parabolic or wave-guide microwave antenna of sufficiently narrow beam-width to do this is *not* small or all that easily concealed, especially if it's on some sort of pivot-able mounting and is located somewhere which gives adequate coverage of a room. When the police tape off the whole area as a crime scene, they'll almost certainly find it... at which point, the manager will be in Very Deep Trouble. Assault and battery, attempted murder, and illegal use of an unlicensed transmitting device. >Put a revolver under the register if you have such a problem with >robbery. Or a Taser, or pepper spray. In all of these cases, though, the chances of somebody ending up dead are probably quite a bit less if nobody tries to play cowboy. -- Dave Platt <dplatt(a)radagast.org> AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |