Magnetic weapons

Ann Feuerbach · 27th February 2005, 10:18 PM

Thanks. Lots of food for thought!

Rivkin · 28th February 2005, 12:59 AM

You are welcome.

Btw, the thing I always wondered about archaeomagnetism people - do you take in mind only the total magnetization and connect it to the strength of the Earth's magnetic field at the time of making of the object, or you actually use oomf/rkmag

to see how the object with such chemistry and shape would react to the applied magnetic field of such strength ?

Jim McDougall · 28th February 2005, 02:49 AM

Hello Ann,
I would like to also welcome you to our forum, and to say what an honor it is to have you join us. I have had your outstanding work "Crucible Damascus Steel"for some time now, and it is brilliantly written!
For someone such as myself who is fascinated with history, yet lost with the complexities of physics, science and technology, it is an entirely readable and well crafted blend of history with well explained technical details.

This thread, as well as that of meteoric iron, have really become high profile and I am delighted that Jens posted them, as the knowledge and discussion has become irresistable! Aside from your extremely interesting article, most discussions on these topics can be quite dry to most of us in the lay world....but this thread keeps getting better, and your joining us is outstanding!

All the best,
Jim

Ann Feuerbach · 28th February 2005, 01:59 PM

Thank you Jim for your kind praise. Believe it or not, I was condemed by my PHD supervisor for not writing "academic" enough. I think that means big words and complicated sentence structures! However, my Russian friends said they like it because they can actually read/translate it easily. I always thought that the was the point of academic writing. Obviously I am not of the elitest academic type. I have so much more to add for the book that could not be put in the PhD
As to archaeomagnetism testing. I believe that the process involves carefully measuring the angle of declination as well as intensity and direction before it is removed from the ground, and then again in a special chamber to eliminate outside forces. I do not recall off hand how much the objects make up is involved.

Mare Rosu · 28th February 2005, 10:16 PM

OK ALL
I said I was winding down on my part of this thread started by JENS, and after reading
Ann and RIVKIN input on this magnetic stuff I should have stopped last week!

Do all you follow their exchange? Man that is some heavy stuff. Anyway I said I would do as FEARN suggested and acquire a magnetic knife holder and zap a carbon blade.
I used a Case butcher knife, as was in contact with the magnetic holder for approximately five minutes, the pictures show that the blade did take magnetic profile with three pols.
I also took a picture of the Mysore dagger with four compasses on the blade to show you that it has the four changes all at the same time.
Gene

Jim McDougall · 1st March 2005, 04:30 AM

Hi Ann,
That is exactly what is great! You are able to discuss material that is typically pretty involved and technical and integrate fascinating historical data, which makes it possible to understand

The original course of this thread was to try to discover how extensively lodestone was involved in the wootz in blades. In some of the material we discovered it seems that it inadvertantly occurred in the raw material from Hyderabad, which remained in certain janbiyya blades found in Arabia.

The ensuing discussion here has been fascinating, and I think I've learned more than in any science class I ever took! ( as far as I can remember...the little red schoolhouse ya know!!

Gene,
You better not bail out on us here!!!

You have been doing an incredible job of scientific experimentation, I think the first of this type I can recall. What you are doing presents some excellent hands on perspective for some of the somewhat complex ideas that have come up. Thank you for following through on this !!! Outstanding work!

All the best,
Jim

Jens Nordlunde · 1st March 2005, 02:37 PM

Gene, you are doing excellent with the compasses – tell me did you empty the shop

?
Allow me just one question, when you show the blade with the compasses, it seems as if the magnetism north-south is farther away from each other than the magnets on the knife holder – is that so?

Jens

28th February 2005, 10:16 PM	#5
Mare Rosu Deceased Join Date: Dec 2004 Location: USA, DEEP SOUTH, GEORGIA, Y'all hear? Posts: 121	Magnetic effects on a Case knife OK ALL I said I was winding down on my part of this thread started by JENS, and after reading Ann and RIVKIN input on this magnetic stuff I should have stopped last week! Do all you follow their exchange? Man that is some heavy stuff. Anyway I said I would do as FEARN suggested and acquire a magnetic knife holder and zap a carbon blade. I used a Case butcher knife, as was in contact with the magnetic holder for approximately five minutes, the pictures show that the blade did take magnetic profile with three pols. I also took a picture of the Mysore dagger with four compasses on the blade to show you that it has the four changes all at the same time. Gene Attached Images

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27th February 2005, 10:18 PM	#1
Ann Feuerbach Member Join Date: Feb 2005 Posts: 133	Thanks. Lots of food for thought!

28th February 2005, 12:59 AM	#2
Rivkin Member Join Date: Dec 2004 Posts: 655	You are welcome. Btw, the thing I always wondered about archaeomagnetism people - do you take in mind only the total magnetization and connect it to the strength of the Earth's magnetic field at the time of making of the object, or you actually use oomf/rkmag to see how the object with such chemistry and shape would react to the applied magnetic field of such strength ?

28th February 2005, 02:49 AM	#3
Jim McDougall Arms Historian Join Date: Dec 2004 Location: Route 66 Posts: 10,281	Hello Ann, I would like to also welcome you to our forum, and to say what an honor it is to have you join us. I have had your outstanding work "Crucible Damascus Steel"for some time now, and it is brilliantly written! For someone such as myself who is fascinated with history, yet lost with the complexities of physics, science and technology, it is an entirely readable and well crafted blend of history with well explained technical details. This thread, as well as that of meteoric iron, have really become high profile and I am delighted that Jens posted them, as the knowledge and discussion has become irresistable! Aside from your extremely interesting article, most discussions on these topics can be quite dry to most of us in the lay world....but this thread keeps getting better, and your joining us is outstanding! All the best, Jim

28th February 2005, 01:59 PM	#4
Ann Feuerbach Member Join Date: Feb 2005 Posts: 133	Thank you Jim for your kind praise. Believe it or not, I was condemed by my PHD supervisor for not writing "academic" enough. I think that means big words and complicated sentence structures! However, my Russian friends said they like it because they can actually read/translate it easily. I always thought that the was the point of academic writing. Obviously I am not of the elitest academic type. I have so much more to add for the book that could not be put in the PhD As to archaeomagnetism testing. I believe that the process involves carefully measuring the angle of declination as well as intensity and direction before it is removed from the ground, and then again in a special chamber to eliminate outside forces. I do not recall off hand how much the objects make up is involved.

1st March 2005, 04:30 AM	#6
Jim McDougall Arms Historian Join Date: Dec 2004 Location: Route 66 Posts: 10,281	Hi Ann, That is exactly what is great! You are able to discuss material that is typically pretty involved and technical and integrate fascinating historical data, which makes it possible to understand The original course of this thread was to try to discover how extensively lodestone was involved in the wootz in blades. In some of the material we discovered it seems that it inadvertantly occurred in the raw material from Hyderabad, which remained in certain janbiyya blades found in Arabia. The ensuing discussion here has been fascinating, and I think I've learned more than in any science class I ever took! ( as far as I can remember...the little red schoolhouse ya know!! Gene, You better not bail out on us here!!! You have been doing an incredible job of scientific experimentation, I think the first of this type I can recall. What you are doing presents some excellent hands on perspective for some of the somewhat complex ideas that have come up. Thank you for following through on this !!! Outstanding work! All the best, Jim

1st March 2005, 02:37 PM	#7
Jens Nordlunde Member Join Date: Dec 2004 Location: Europe Posts: 2,718	Gene, you are doing excellent with the compasses – tell me did you empty the shop ? Allow me just one question, when you show the blade with the compasses, it seems as if the magnetism north-south is farther away from each other than the magnets on the knife holder – is that so? Jens