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#1
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A few weeks ago, I asked about generating an 140kHz electric field
across a leaf, part of a bio-med lab. Thanks for the answers. But it turns out I misread the roster and was in the wrong group. What I ACTUALLY NEED to do is generate a 100kHz electric field, at 1v/cm, across a T-Bone steak, to measure whether it retards or accelerates decomposition over time. The hypothesis is that the e-field retards growth of certain bacteria inside the meat. By design, we have not been instructed exactly how to construct the methods and apparatus. I have at my disposal a function generator and various amplifiers. It is a gross oversimplification to just connect one wire to one end of the steak, and another wire at the other end, and apply 20V RMS across a 20cm steak to generate 1V/cm? Thanks. Sorry about the idiot questions. |
#2
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On Sep 5, 1:00*pm, Jon Mcleod wrote:
A few weeks ago, I asked about generating an 140kHz electric field across a leaf, part of a bio-med lab. *Thanks for the answers. *But it turns out I misread the roster and was in the wrong group. What I ACTUALLY NEED to do is generate a 100kHz electric field, at 1v/cm, across a T-Bone steak, to measure whether it retards or accelerates decomposition over time. *The hypothesis is that the e-field retards growth of certain bacteria inside the meat. By design, we have not been instructed exactly how to construct the methods and apparatus. *I have at my disposal a function generator and various amplifiers. It is a gross oversimplification to just connect one wire to one end of the steak, and another wire at the other end, and apply 20V RMS across a 20cm steak to generate 1V/cm? Thanks. *Sorry about the idiot questions. What you are refering to is the induction process as applied to present day induction cookers available in stors for the general consumer Best regards Art |
#3
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Art Unwin wrote:
What you are refering to is the induction process as applied to present day induction cookers available in stors for the general consumer Best regards Actually, no, the induction cooker uses a much stronger field. This is a low voltage field (1v/cm) that doesn't cook (or heat) the steak. Supposedly it disrupts internal structures inside bacteria when they try to divide, at least so goes the hypothesis. |
#4
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On Sep 5, 1:27*pm, Jon Mcleod wrote:
Art Unwin wrote: What you are refering to is the induction process as applied to present day induction cookers available in stors for the general consumer Best regards Actually, no, the induction cooker uses a much stronger field. *This is a low voltage field (1v/cm) that doesn't cook (or heat) the steak. Supposedly it disrupts internal structures inside bacteria when they try to divide, at least so goes the hypothesis. Well you are partly correct.If the heating section is not fully resonant and a time varying current is applied Then you attain a position where radiation is retarded and replaced by heat. If the heating section is resonant then the applied time varying current will only supply the energy to overcome friction and where all the rest is radiation. The equivalent electrical circuit is known as a Tank circuit where applied energy only replaces the friction involved in the continuos movement of charges backwards and forwards between the inductor and the capacitor in a near perpetual motion.. So in the correct circumstances only a bare minimum of heat is generated and where the rest of the energy goes to provide radiation a well known attribute created for sterelization found by Madame Curie of France Cheers Art |
#5
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On Sep 5, 1:27*pm, Jon Mcleod wrote:
Art Unwin wrote: What you are refering to is the induction process as applied to present day induction cookers available in stors for the general consumer Best regards Actually, no, the induction cooker uses a much stronger field. *This is a low voltage field (1v/cm) that doesn't cook (or heat) the steak. Supposedly it disrupts internal structures inside bacteria when they try to divide, at least so goes the hypothesis. Jon, the idea of heat is confusing you!. The BBC aired a segment from Germany where they placed a slab of ice on top of a induction oven and then placed a cooking utensel on top of the ice so they could cook its contents. If the induction oven was creating heat instead of a radiation field one could surmise that the ice would melt . This was not the case as radiation bypassed the ice and gyrated towards the diagmagnetic cooking utensil. The experiment may well still be shown on U tube! I have just to get away and do some honey dooos ! Regards Art KB9MZ |
#6
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On Sep 5, 2:27*pm, Jon Mcleod wrote:
Art Unwin wrote: What you are refering to is the induction process as applied to present day induction cookers available in stors for the general consumer Best regards Actually, no, the induction cooker uses a much stronger field. *This is a low voltage field (1v/cm) that doesn't cook (or heat) the steak. Supposedly it disrupts internal structures inside bacteria when they try to divide, at least so goes the hypothesis. Hmmm...I thought the induction cooking process was merely a "cool-top" cooking appliance using a large inductor to generate an AC magnetic field. The h field does nothing at all to the food but it induces currents in the (ferrous) cookware which heats the cookware allowing it to be used in a manner similar to "hot" top resistive cooking elements. In this case the resistance is in the cookware itself, dissipating power from the induced current. That's what I thought it was anyways... If you want to really prevent bacteria growth in food, may I suggest a good dose of Cobalt 60. |
#7
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On Sep 8, 8:20*pm, wrote:
On Sep 5, 2:27*pm, Jon Mcleod wrote: Art Unwin wrote: What you are refering to is the induction process as applied to present day induction cookers available in stors for the general consumer Best regards Actually, no, the induction cooker uses a much stronger field. *This is a low voltage field (1v/cm) that doesn't cook (or heat) the steak. Supposedly it disrupts internal structures inside bacteria when they try to divide, at least so goes the hypothesis. Hmmm...I thought the induction cooking process was merely a "cool-top" cooking appliance using a large inductor to generate an AC magnetic field. The h field does nothing at all to the food but it induces currents in the (ferrous) cookware which heats the cookware allowing it to be used in a manner similar to "hot" top resistive cooking elements. In this case the resistance is in the cookware itself, dissipating power from the induced current. That's what I thought it was anyways... If you want to really prevent bacteria growth in food, may I suggest a good dose of Cobalt 60. I believe you are correct since special cookware is required with induction cooking and I would imagine it also has a large magnet inside the inductance as opposed to air |
#8
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On Fri, 05 Sep 2008 14:00:52 -0400, Jon Mcleod
wrote: A few weeks ago, I asked about generating an 140kHz electric field across a leaf, part of a bio-med lab. Thanks for the answers. But it turns out I misread the roster and was in the wrong group. What I ACTUALLY NEED to do is generate a 100kHz electric field, at 1v/cm, across a T-Bone steak, to measure whether it retards or accelerates decomposition over time. The hypothesis is that the e-field retards growth of certain bacteria inside the meat. A pretty shabby hypothesis. By design, we have not been instructed exactly how to construct the methods and apparatus. I have at my disposal a function generator and various amplifiers. It is a gross oversimplification to just connect one wire to one end of the steak, and another wire at the other end, and apply 20V RMS across a 20cm steak to generate 1V/cm? Yes it is a gross oversimplification. What are your controls? Thanks. Sorry about the idiot questions. Hi Jon, It has been historically proven that the e-fields of 60 Hz current across the ribs of convicts, over time (about several minutes) seriously accelerates decomposition. Sterilization would naturally follow too answering the point about bacteria growth. Between those two obvious observations, it would seem you have a conflicting agenda. The hypothesis you are testing seems to want to simultaneously challenge and support longstanding evidence through shifting frequency without actually specifying how MUCH current should be applied. Thus the hypothesis devolves to: "How does frequency enter into what has already been observed?" Let me point out that this, too, already has longstanding evidence of doing pretty much offering the same outcome; and the state, for the sake of economy, has long since abandoned the hypothesis of performing executions with 100KHz electric chairs. To put it simply, you have to many unstated and unfulfilled variables to call your proposal a hypothesis. 73's Richard Clark, KB7QHC |
#9
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Richard Clark wrote:
On Fri, 05 Sep 2008 14:00:52 -0400, Jon Mcleod wrote: A few weeks ago, I asked about generating an 140kHz electric field across a leaf, part of a bio-med lab. Thanks for the answers. But it turns out I misread the roster and was in the wrong group. What I ACTUALLY NEED to do is generate a 100kHz electric field, at 1v/cm, across a T-Bone steak, to measure whether it retards or accelerates decomposition over time. The hypothesis is that the e-field retards growth of certain bacteria inside the meat. A pretty shabby hypothesis. By design, we have not been instructed exactly how to construct the methods and apparatus. I have at my disposal a function generator and various amplifiers. It is a gross oversimplification to just connect one wire to one end of the steak, and another wire at the other end, and apply 20V RMS across a 20cm steak to generate 1V/cm? Yes it is a gross oversimplification. What are your controls? Thanks. Sorry about the idiot questions. Hi Jon, It has been historically proven that the e-fields of 60 Hz current across the ribs of convicts, over time (about several minutes) seriously accelerates decomposition. Sterilization would naturally follow too answering the point about bacteria growth. Between those two obvious observations, it would seem you have a conflicting agenda. The hypothesis you are testing seems to want to simultaneously challenge and support longstanding evidence through shifting frequency without actually specifying how MUCH current should be applied. Thus the hypothesis devolves to: "How does frequency enter into what has already been observed?" Let me point out that this, too, already has longstanding evidence of doing pretty much offering the same outcome; and the state, for the sake of economy, has long since abandoned the hypothesis of performing executions with 100KHz electric chairs. To put it simply, you have to many unstated and unfulfilled variables to call your proposal a hypothesis. 73's Richard Clark, KB7QHC Mr. Clark, The control is another steak is similar size from the same grocery packaging, placed in a second apparatus that is not powered. The idea is that a certain frequencies of low-voltage e-fields inhibit cellular mitosis. The professor saw an article in Science magazine about treating cancer with these fields, and decided it would be a nice lab activity for his students to observe other effects with this type of field. http://www.rife.de/files/disruption_...eplication.pdf Since generating an e-field in "meat" or "plant material" is not so easy, this is part of the assignment. We need to figure it out and then fully describe it in our methods section. The leaf people are using high-voltage insulated wires. With "meat", which is larger, I don't think this will work. I am wondering if I can use a low-voltage direct connection. My problem is that our group is weak on electromagnetism. They have been floundering, and now I am floundering with them. I have some ideas, but ideas are best vetted through those with PRACTICAL experience, which you guys seem to have. I have also wasted almost 2 weeks by sitting in the wrong group. OK I am an idiot in terms of BOTH electromagnetism and reading directions. Bottom line: I need to generate a 1V/cm field across a t-bone steak. Merit or no merit (this is college). Does anyone have any place I might look on line, or any book I might buy, or any advice on how I might accomplish this? Thank you. |
#10
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![]() "Jon Mcleod" wrote in message m... Richard Clark wrote: On Fri, 05 Sep 2008 14:00:52 -0400, Jon Mcleod wrote: A few weeks ago, I asked about generating an 140kHz electric field across a leaf, part of a bio-med lab. Thanks for the answers. But it turns out I misread the roster and was in the wrong group. What I ACTUALLY NEED to do is generate a 100kHz electric field, at 1v/cm, across a T-Bone steak, to measure whether it retards or accelerates decomposition over time. The hypothesis is that the e-field retards growth of certain bacteria inside the meat. A pretty shabby hypothesis. By design, we have not been instructed exactly how to construct the methods and apparatus. I have at my disposal a function generator and various amplifiers. It is a gross oversimplification to just connect one wire to one end of the steak, and another wire at the other end, and apply 20V RMS across a 20cm steak to generate 1V/cm? Yes it is a gross oversimplification. What are your controls? Thanks. Sorry about the idiot questions. Hi Jon, It has been historically proven that the e-fields of 60 Hz current across the ribs of convicts, over time (about several minutes) seriously accelerates decomposition. Sterilization would naturally follow too answering the point about bacteria growth. Between those two obvious observations, it would seem you have a conflicting agenda. The hypothesis you are testing seems to want to simultaneously challenge and support longstanding evidence through shifting frequency without actually specifying how MUCH current should be applied. Thus the hypothesis devolves to: "How does frequency enter into what has already been observed?" Let me point out that this, too, already has longstanding evidence of doing pretty much offering the same outcome; and the state, for the sake of economy, has long since abandoned the hypothesis of performing executions with 100KHz electric chairs. To put it simply, you have to many unstated and unfulfilled variables to call your proposal a hypothesis. 73's Richard Clark, KB7QHC Mr. Clark, The control is another steak is similar size from the same grocery packaging, placed in a second apparatus that is not powered. The idea is that a certain frequencies of low-voltage e-fields inhibit cellular mitosis. The professor saw an article in Science magazine about treating cancer with these fields, and decided it would be a nice lab activity for his students to observe other effects with this type of field. http://www.rife.de/files/disruption_...eplication.pdf Since generating an e-field in "meat" or "plant material" is not so easy, this is part of the assignment. We need to figure it out and then fully describe it in our methods section. The leaf people are using high-voltage insulated wires. With "meat", which is larger, I don't think this will work. I am wondering if I can use a low-voltage direct connection. My problem is that our group is weak on electromagnetism. They have been floundering, and now I am floundering with them. I have some ideas, but ideas are best vetted through those with PRACTICAL experience, which you guys seem to have. I have also wasted almost 2 weeks by sitting in the wrong group. OK I am an idiot in terms of BOTH electromagnetism and reading directions. Bottom line: I need to generate a 1V/cm field across a t-bone steak. Merit or no merit (this is college). Does anyone have any place I might look on line, or any book I might buy, or any advice on how I might accomplish this? Thank you. the problem is, do you want the field 'inside' the meat, or in the air around the meat? The problem is made harder because the steak is not only a dielectric material, which changes the magnitude of the field, but is also moderately conductive, which essentially shorts out the field. also, the properties depend on the direction of the field... you might want to see if your library has this article: http://ieeexplore.ieee.org/xpl/freea...rnumber=300250 . personally i would probably go the other way and suspend the meat on an insulating net horizontally and put a plate above and below it that are bigger than the steak. it is much easier to generate a uniform field between large parallel conductive plates than with wires... as a first approximation make the plates about double the largest dimension of the steak. it may be acceptible to set the steak on one of the plates (sterilize it first) and just suspend the other one above it. |
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