Material for weapons and tools in a magnetic field
What material for weapons and tools would a tribal/medieval society use if there was a magnetic field preventing the use of iron? The iron would be attracted by the ground, obviously. It can`t be used for arrows for example as they would not get to far.
weapons materials tools
|
show 6 more comments
What material for weapons and tools would a tribal/medieval society use if there was a magnetic field preventing the use of iron? The iron would be attracted by the ground, obviously. It can`t be used for arrows for example as they would not get to far.
weapons materials tools
5
I don't really understand how a planetary magnetic field could 'prevent' the use of iron. What do you mean by prevent? Does it rust or explode or break or simply fade away?
– kineticcrusher
Dec 28 '18 at 16:21
1
Does this mean that no metals that are affected by magnets can be used? Can they even be used to make other alloys? Because not all iron based steels can be affected by magnets.
– K Mo
Dec 28 '18 at 16:28
1
@EdwardConstantin - There's a number of different magnetic materials, of which iron is probably the best known. I think a clarifying question would be "how strong is your planet's magnetic field?" and/or "how large an area does the magnetic field cover?". Note that magnetic fields fall off as the cube of the distance, so your field strength would be absolutely enormous - you might want to figure out at what point moving the object generates a noticeable electric charge.
– Clockwork-Muse
Dec 28 '18 at 18:18
1
keep in mind that way before the effects on iron weapons can be felt, humans would have a really bad time for being subjected to strong permanent magnetic fields.
– brett
Dec 29 '18 at 11:26
1
@Mazura check out the Adverse Events at the end of this article: fda.gov/Radiation-EmittingProducts/…. The thing is MRI is usually performed over a short timespan and there are [albeit rare] side effects. I imagine living long-term in such a field would affect even the less-sensitive people. Plus there's also iron in blood. Some effects would definitely have to be felt over time, if there were such a strong field that would affect iron tools/weapons.
– brett
Dec 29 '18 at 21:47
|
show 6 more comments
What material for weapons and tools would a tribal/medieval society use if there was a magnetic field preventing the use of iron? The iron would be attracted by the ground, obviously. It can`t be used for arrows for example as they would not get to far.
weapons materials tools
What material for weapons and tools would a tribal/medieval society use if there was a magnetic field preventing the use of iron? The iron would be attracted by the ground, obviously. It can`t be used for arrows for example as they would not get to far.
weapons materials tools
weapons materials tools
edited Dec 28 '18 at 16:33
Edward Constantin
asked Dec 28 '18 at 16:14
Edward ConstantinEdward Constantin
11418
11418
5
I don't really understand how a planetary magnetic field could 'prevent' the use of iron. What do you mean by prevent? Does it rust or explode or break or simply fade away?
– kineticcrusher
Dec 28 '18 at 16:21
1
Does this mean that no metals that are affected by magnets can be used? Can they even be used to make other alloys? Because not all iron based steels can be affected by magnets.
– K Mo
Dec 28 '18 at 16:28
1
@EdwardConstantin - There's a number of different magnetic materials, of which iron is probably the best known. I think a clarifying question would be "how strong is your planet's magnetic field?" and/or "how large an area does the magnetic field cover?". Note that magnetic fields fall off as the cube of the distance, so your field strength would be absolutely enormous - you might want to figure out at what point moving the object generates a noticeable electric charge.
– Clockwork-Muse
Dec 28 '18 at 18:18
1
keep in mind that way before the effects on iron weapons can be felt, humans would have a really bad time for being subjected to strong permanent magnetic fields.
– brett
Dec 29 '18 at 11:26
1
@Mazura check out the Adverse Events at the end of this article: fda.gov/Radiation-EmittingProducts/…. The thing is MRI is usually performed over a short timespan and there are [albeit rare] side effects. I imagine living long-term in such a field would affect even the less-sensitive people. Plus there's also iron in blood. Some effects would definitely have to be felt over time, if there were such a strong field that would affect iron tools/weapons.
– brett
Dec 29 '18 at 21:47
|
show 6 more comments
5
I don't really understand how a planetary magnetic field could 'prevent' the use of iron. What do you mean by prevent? Does it rust or explode or break or simply fade away?
– kineticcrusher
Dec 28 '18 at 16:21
1
Does this mean that no metals that are affected by magnets can be used? Can they even be used to make other alloys? Because not all iron based steels can be affected by magnets.
– K Mo
Dec 28 '18 at 16:28
1
@EdwardConstantin - There's a number of different magnetic materials, of which iron is probably the best known. I think a clarifying question would be "how strong is your planet's magnetic field?" and/or "how large an area does the magnetic field cover?". Note that magnetic fields fall off as the cube of the distance, so your field strength would be absolutely enormous - you might want to figure out at what point moving the object generates a noticeable electric charge.
– Clockwork-Muse
Dec 28 '18 at 18:18
1
keep in mind that way before the effects on iron weapons can be felt, humans would have a really bad time for being subjected to strong permanent magnetic fields.
– brett
Dec 29 '18 at 11:26
1
@Mazura check out the Adverse Events at the end of this article: fda.gov/Radiation-EmittingProducts/…. The thing is MRI is usually performed over a short timespan and there are [albeit rare] side effects. I imagine living long-term in such a field would affect even the less-sensitive people. Plus there's also iron in blood. Some effects would definitely have to be felt over time, if there were such a strong field that would affect iron tools/weapons.
– brett
Dec 29 '18 at 21:47
5
5
I don't really understand how a planetary magnetic field could 'prevent' the use of iron. What do you mean by prevent? Does it rust or explode or break or simply fade away?
– kineticcrusher
Dec 28 '18 at 16:21
I don't really understand how a planetary magnetic field could 'prevent' the use of iron. What do you mean by prevent? Does it rust or explode or break or simply fade away?
– kineticcrusher
Dec 28 '18 at 16:21
1
1
Does this mean that no metals that are affected by magnets can be used? Can they even be used to make other alloys? Because not all iron based steels can be affected by magnets.
– K Mo
Dec 28 '18 at 16:28
Does this mean that no metals that are affected by magnets can be used? Can they even be used to make other alloys? Because not all iron based steels can be affected by magnets.
– K Mo
Dec 28 '18 at 16:28
1
1
@EdwardConstantin - There's a number of different magnetic materials, of which iron is probably the best known. I think a clarifying question would be "how strong is your planet's magnetic field?" and/or "how large an area does the magnetic field cover?". Note that magnetic fields fall off as the cube of the distance, so your field strength would be absolutely enormous - you might want to figure out at what point moving the object generates a noticeable electric charge.
– Clockwork-Muse
Dec 28 '18 at 18:18
@EdwardConstantin - There's a number of different magnetic materials, of which iron is probably the best known. I think a clarifying question would be "how strong is your planet's magnetic field?" and/or "how large an area does the magnetic field cover?". Note that magnetic fields fall off as the cube of the distance, so your field strength would be absolutely enormous - you might want to figure out at what point moving the object generates a noticeable electric charge.
– Clockwork-Muse
Dec 28 '18 at 18:18
1
1
keep in mind that way before the effects on iron weapons can be felt, humans would have a really bad time for being subjected to strong permanent magnetic fields.
– brett
Dec 29 '18 at 11:26
keep in mind that way before the effects on iron weapons can be felt, humans would have a really bad time for being subjected to strong permanent magnetic fields.
– brett
Dec 29 '18 at 11:26
1
1
@Mazura check out the Adverse Events at the end of this article: fda.gov/Radiation-EmittingProducts/…. The thing is MRI is usually performed over a short timespan and there are [albeit rare] side effects. I imagine living long-term in such a field would affect even the less-sensitive people. Plus there's also iron in blood. Some effects would definitely have to be felt over time, if there were such a strong field that would affect iron tools/weapons.
– brett
Dec 29 '18 at 21:47
@Mazura check out the Adverse Events at the end of this article: fda.gov/Radiation-EmittingProducts/…. The thing is MRI is usually performed over a short timespan and there are [albeit rare] side effects. I imagine living long-term in such a field would affect even the less-sensitive people. Plus there's also iron in blood. Some effects would definitely have to be felt over time, if there were such a strong field that would affect iron tools/weapons.
– brett
Dec 29 '18 at 21:47
|
show 6 more comments
6 Answers
6
active
oldest
votes
Ceramic knifes would be cool:
A ceramic knife is a knife designed with a ceramic blade typically made from zirconium dioxide (ZrO2; also known as zirconia). These knife blades are usually produced through the dry-pressing and firing of powdered zirconia using solid-state sintering.
(Wikipedia)
I'm not sure if this technology is feasible for a medieval society - but its fiction, so why not?
1
Well, stone knives have been a thing for a couple years now. Chip away at a pot shard and you should have a reasonable "ceramic knife"!
– elemtilas
Dec 28 '18 at 17:02
add a comment |
Earth's history is filled with non-magnetic weapons and tools. The Iron Age was named for the increasing use of iron in tools and weapons -- before that, bronze, copper, wood and stone did the same jobs, perhaps not quite as well, but well enough to do the job for many centuries.
I don't know what you mean by "Christian Era", here, since iron had been worked for at least a millennium before the birth of Christ, and the iron age itself "ended" (see article) 500 years before then too.
– Clockwork-Muse
Dec 28 '18 at 18:09
@Clockwork-Muse Okay, thinking about it, I recall the "Bronze Age Crash" being around 1177 BCE, so I was off close to a thousand years. Edited. FWIW, iron working preceded the Iron Age by a bit -- meteoric iron, bog iron, etc. were workable with bronze working tools; the Iron Age was denoted by the ability to extract iron from ore and the near-complete replacement of bronze by iron.
– Zeiss Ikon
Dec 28 '18 at 18:43
1
If the magnetic field is strong enough to interfere with using iron weapons, it'll probably induce lethal electric currents in bronze and copper ones when you swing them around.
– Mark
Dec 29 '18 at 2:47
add a comment |
I used to work for a company that makes 1.5 T and 4 T MRI machines. We used brass tools in and around the magnets.
They did some research into an open magnet design to be used in the operating room during surgeries. The surgeons would have used brass instruments, with ceramic scalpel tips. However, the concept never made it into product.
It should be noted that in a magnetic field, torques are a bigger hazard than linear forces. In other words, you are more likely to have a tool twist your wrist than get "sucked" into the magnet.
That means a sword wont be fiable due to the fact that it will always be turned on the wider part and not on the edge. Am I right?
– Edward Constantin
Dec 28 '18 at 22:47
If it is ferromagnetic (iron, steel), there will be a torque to align it with the magnetic field. However, magnetic fields have no effect on non-magnetic materials (brass, wood, ceramic) and everything would be normal. It's likely that such a culture would skip the iron age and keep using brass and bronze for inventions and weapons.
– Dr Sheldon
Dec 28 '18 at 23:01
You are experienced in this domain. If an object has a big speed, lets say 44 m/s trough this field, will it obtain an electric charge (basically making it an electric sword?)
– Edward Constantin
Dec 28 '18 at 23:18
1
Theoretically, that will induce a voltage which separates the charges on an object, and is the basis of an electric generator. However, you need a complete circuit for the charge to go anywhere. Also, the voltage induced is far too small to hurt someone -- it's no more harmful than getting hit by a normal sword.
– Dr Sheldon
Dec 28 '18 at 23:30
1
The dielectric strength of air is way too large for that.
– Dr Sheldon
Dec 29 '18 at 0:27
|
show 3 more comments
Stick with bronze.
You may have heard of the bronze age, a time in which all metal tools were made out of bronze (not iron or steel). Bronze is a non-magnetic metal alloy used in human history to make tools, and weapons, and pretty much anything you would make out of iron.
Bronze is a simple historically friendly answer to a substance that can easily be used in a strong magnetic field.
After the bronze age, a civilization might proceed directly to the plastics age if iron is not feasible.
1
Most non-sparking tools are made out of a bronze alloy; the high copper content prevents sparking. This is a good thing in refineries and petro-chemical plants.
– Catalyst
Dec 28 '18 at 19:21
3
Note that depending on the magnetic field any conductor and thus all metals could be useless as a weapon due to eddy currents, though the implications of such a magnetic field on society will most likely go far beyond the prevention of certain weapons.
– Ezra
Dec 28 '18 at 20:51
add a comment |
Use whatever materials you want:
As you say:
The iron would be attracted by the ground
The thing is that arrows already are attracted to the ground - by gravity. You have to ask just how strong this magnetic field must be to noticeably deflect arrows.
Some experiments have been done on this with bullets including by the Mythbusters but they used non-ferrous ammunition.
The following video however shows an experiment with a powerful neodymium magnet and a steel ball from a low-powered air rifle. There is some deflection but they fire very close to the magnet and I don't suppose your landscape is made of neodymium.
https://youtu.be/pXDLGNKoR2c?t=279
Firing near a the world's most powerful MRI machine that has a 45-ton magnet and generates a 9.4-Tesla magnetic field would definitely deflect or even stop an arrow but there's nowhere to plug one in during medieval times.
The ground would be very magnetic, basically making every iron object much heavier. I think they could use some iron melee weapons in this case if they are very strong
– Edward Constantin
Dec 28 '18 at 17:02
1
Let's say arrows are 5 feet above the ground when fired, then nothing short of a multi-Tesla MRI machine will deflect them appreciably. Incidentally the Earths magnetic field is about 10 micro Teslas
– chasly from UK
Dec 28 '18 at 17:06
add a comment |
Since there were many suggestions of non-magnetic metals: They aren't usable for many purposes, specially for fast moving parts: Eddy currents will slow down the motion.
So the culture should go for isolating materials: Wood, ceramics, and glass.
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
});
});
}, "mathjax-editing");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "579"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fworldbuilding.stackexchange.com%2fquestions%2f135027%2fmaterial-for-weapons-and-tools-in-a-magnetic-field%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
6 Answers
6
active
oldest
votes
6 Answers
6
active
oldest
votes
active
oldest
votes
active
oldest
votes
Ceramic knifes would be cool:
A ceramic knife is a knife designed with a ceramic blade typically made from zirconium dioxide (ZrO2; also known as zirconia). These knife blades are usually produced through the dry-pressing and firing of powdered zirconia using solid-state sintering.
(Wikipedia)
I'm not sure if this technology is feasible for a medieval society - but its fiction, so why not?
1
Well, stone knives have been a thing for a couple years now. Chip away at a pot shard and you should have a reasonable "ceramic knife"!
– elemtilas
Dec 28 '18 at 17:02
add a comment |
Ceramic knifes would be cool:
A ceramic knife is a knife designed with a ceramic blade typically made from zirconium dioxide (ZrO2; also known as zirconia). These knife blades are usually produced through the dry-pressing and firing of powdered zirconia using solid-state sintering.
(Wikipedia)
I'm not sure if this technology is feasible for a medieval society - but its fiction, so why not?
1
Well, stone knives have been a thing for a couple years now. Chip away at a pot shard and you should have a reasonable "ceramic knife"!
– elemtilas
Dec 28 '18 at 17:02
add a comment |
Ceramic knifes would be cool:
A ceramic knife is a knife designed with a ceramic blade typically made from zirconium dioxide (ZrO2; also known as zirconia). These knife blades are usually produced through the dry-pressing and firing of powdered zirconia using solid-state sintering.
(Wikipedia)
I'm not sure if this technology is feasible for a medieval society - but its fiction, so why not?
Ceramic knifes would be cool:
A ceramic knife is a knife designed with a ceramic blade typically made from zirconium dioxide (ZrO2; also known as zirconia). These knife blades are usually produced through the dry-pressing and firing of powdered zirconia using solid-state sintering.
(Wikipedia)
I'm not sure if this technology is feasible for a medieval society - but its fiction, so why not?
edited Dec 28 '18 at 16:40
HDE 226868♦
63.7k12216416
63.7k12216416
answered Dec 28 '18 at 16:36
StefanStefan
1512
1512
1
Well, stone knives have been a thing for a couple years now. Chip away at a pot shard and you should have a reasonable "ceramic knife"!
– elemtilas
Dec 28 '18 at 17:02
add a comment |
1
Well, stone knives have been a thing for a couple years now. Chip away at a pot shard and you should have a reasonable "ceramic knife"!
– elemtilas
Dec 28 '18 at 17:02
1
1
Well, stone knives have been a thing for a couple years now. Chip away at a pot shard and you should have a reasonable "ceramic knife"!
– elemtilas
Dec 28 '18 at 17:02
Well, stone knives have been a thing for a couple years now. Chip away at a pot shard and you should have a reasonable "ceramic knife"!
– elemtilas
Dec 28 '18 at 17:02
add a comment |
Earth's history is filled with non-magnetic weapons and tools. The Iron Age was named for the increasing use of iron in tools and weapons -- before that, bronze, copper, wood and stone did the same jobs, perhaps not quite as well, but well enough to do the job for many centuries.
I don't know what you mean by "Christian Era", here, since iron had been worked for at least a millennium before the birth of Christ, and the iron age itself "ended" (see article) 500 years before then too.
– Clockwork-Muse
Dec 28 '18 at 18:09
@Clockwork-Muse Okay, thinking about it, I recall the "Bronze Age Crash" being around 1177 BCE, so I was off close to a thousand years. Edited. FWIW, iron working preceded the Iron Age by a bit -- meteoric iron, bog iron, etc. were workable with bronze working tools; the Iron Age was denoted by the ability to extract iron from ore and the near-complete replacement of bronze by iron.
– Zeiss Ikon
Dec 28 '18 at 18:43
1
If the magnetic field is strong enough to interfere with using iron weapons, it'll probably induce lethal electric currents in bronze and copper ones when you swing them around.
– Mark
Dec 29 '18 at 2:47
add a comment |
Earth's history is filled with non-magnetic weapons and tools. The Iron Age was named for the increasing use of iron in tools and weapons -- before that, bronze, copper, wood and stone did the same jobs, perhaps not quite as well, but well enough to do the job for many centuries.
I don't know what you mean by "Christian Era", here, since iron had been worked for at least a millennium before the birth of Christ, and the iron age itself "ended" (see article) 500 years before then too.
– Clockwork-Muse
Dec 28 '18 at 18:09
@Clockwork-Muse Okay, thinking about it, I recall the "Bronze Age Crash" being around 1177 BCE, so I was off close to a thousand years. Edited. FWIW, iron working preceded the Iron Age by a bit -- meteoric iron, bog iron, etc. were workable with bronze working tools; the Iron Age was denoted by the ability to extract iron from ore and the near-complete replacement of bronze by iron.
– Zeiss Ikon
Dec 28 '18 at 18:43
1
If the magnetic field is strong enough to interfere with using iron weapons, it'll probably induce lethal electric currents in bronze and copper ones when you swing them around.
– Mark
Dec 29 '18 at 2:47
add a comment |
Earth's history is filled with non-magnetic weapons and tools. The Iron Age was named for the increasing use of iron in tools and weapons -- before that, bronze, copper, wood and stone did the same jobs, perhaps not quite as well, but well enough to do the job for many centuries.
Earth's history is filled with non-magnetic weapons and tools. The Iron Age was named for the increasing use of iron in tools and weapons -- before that, bronze, copper, wood and stone did the same jobs, perhaps not quite as well, but well enough to do the job for many centuries.
edited Dec 28 '18 at 18:38
answered Dec 28 '18 at 16:42
Zeiss IkonZeiss Ikon
1,190111
1,190111
I don't know what you mean by "Christian Era", here, since iron had been worked for at least a millennium before the birth of Christ, and the iron age itself "ended" (see article) 500 years before then too.
– Clockwork-Muse
Dec 28 '18 at 18:09
@Clockwork-Muse Okay, thinking about it, I recall the "Bronze Age Crash" being around 1177 BCE, so I was off close to a thousand years. Edited. FWIW, iron working preceded the Iron Age by a bit -- meteoric iron, bog iron, etc. were workable with bronze working tools; the Iron Age was denoted by the ability to extract iron from ore and the near-complete replacement of bronze by iron.
– Zeiss Ikon
Dec 28 '18 at 18:43
1
If the magnetic field is strong enough to interfere with using iron weapons, it'll probably induce lethal electric currents in bronze and copper ones when you swing them around.
– Mark
Dec 29 '18 at 2:47
add a comment |
I don't know what you mean by "Christian Era", here, since iron had been worked for at least a millennium before the birth of Christ, and the iron age itself "ended" (see article) 500 years before then too.
– Clockwork-Muse
Dec 28 '18 at 18:09
@Clockwork-Muse Okay, thinking about it, I recall the "Bronze Age Crash" being around 1177 BCE, so I was off close to a thousand years. Edited. FWIW, iron working preceded the Iron Age by a bit -- meteoric iron, bog iron, etc. were workable with bronze working tools; the Iron Age was denoted by the ability to extract iron from ore and the near-complete replacement of bronze by iron.
– Zeiss Ikon
Dec 28 '18 at 18:43
1
If the magnetic field is strong enough to interfere with using iron weapons, it'll probably induce lethal electric currents in bronze and copper ones when you swing them around.
– Mark
Dec 29 '18 at 2:47
I don't know what you mean by "Christian Era", here, since iron had been worked for at least a millennium before the birth of Christ, and the iron age itself "ended" (see article) 500 years before then too.
– Clockwork-Muse
Dec 28 '18 at 18:09
I don't know what you mean by "Christian Era", here, since iron had been worked for at least a millennium before the birth of Christ, and the iron age itself "ended" (see article) 500 years before then too.
– Clockwork-Muse
Dec 28 '18 at 18:09
@Clockwork-Muse Okay, thinking about it, I recall the "Bronze Age Crash" being around 1177 BCE, so I was off close to a thousand years. Edited. FWIW, iron working preceded the Iron Age by a bit -- meteoric iron, bog iron, etc. were workable with bronze working tools; the Iron Age was denoted by the ability to extract iron from ore and the near-complete replacement of bronze by iron.
– Zeiss Ikon
Dec 28 '18 at 18:43
@Clockwork-Muse Okay, thinking about it, I recall the "Bronze Age Crash" being around 1177 BCE, so I was off close to a thousand years. Edited. FWIW, iron working preceded the Iron Age by a bit -- meteoric iron, bog iron, etc. were workable with bronze working tools; the Iron Age was denoted by the ability to extract iron from ore and the near-complete replacement of bronze by iron.
– Zeiss Ikon
Dec 28 '18 at 18:43
1
1
If the magnetic field is strong enough to interfere with using iron weapons, it'll probably induce lethal electric currents in bronze and copper ones when you swing them around.
– Mark
Dec 29 '18 at 2:47
If the magnetic field is strong enough to interfere with using iron weapons, it'll probably induce lethal electric currents in bronze and copper ones when you swing them around.
– Mark
Dec 29 '18 at 2:47
add a comment |
I used to work for a company that makes 1.5 T and 4 T MRI machines. We used brass tools in and around the magnets.
They did some research into an open magnet design to be used in the operating room during surgeries. The surgeons would have used brass instruments, with ceramic scalpel tips. However, the concept never made it into product.
It should be noted that in a magnetic field, torques are a bigger hazard than linear forces. In other words, you are more likely to have a tool twist your wrist than get "sucked" into the magnet.
That means a sword wont be fiable due to the fact that it will always be turned on the wider part and not on the edge. Am I right?
– Edward Constantin
Dec 28 '18 at 22:47
If it is ferromagnetic (iron, steel), there will be a torque to align it with the magnetic field. However, magnetic fields have no effect on non-magnetic materials (brass, wood, ceramic) and everything would be normal. It's likely that such a culture would skip the iron age and keep using brass and bronze for inventions and weapons.
– Dr Sheldon
Dec 28 '18 at 23:01
You are experienced in this domain. If an object has a big speed, lets say 44 m/s trough this field, will it obtain an electric charge (basically making it an electric sword?)
– Edward Constantin
Dec 28 '18 at 23:18
1
Theoretically, that will induce a voltage which separates the charges on an object, and is the basis of an electric generator. However, you need a complete circuit for the charge to go anywhere. Also, the voltage induced is far too small to hurt someone -- it's no more harmful than getting hit by a normal sword.
– Dr Sheldon
Dec 28 '18 at 23:30
1
The dielectric strength of air is way too large for that.
– Dr Sheldon
Dec 29 '18 at 0:27
|
show 3 more comments
I used to work for a company that makes 1.5 T and 4 T MRI machines. We used brass tools in and around the magnets.
They did some research into an open magnet design to be used in the operating room during surgeries. The surgeons would have used brass instruments, with ceramic scalpel tips. However, the concept never made it into product.
It should be noted that in a magnetic field, torques are a bigger hazard than linear forces. In other words, you are more likely to have a tool twist your wrist than get "sucked" into the magnet.
That means a sword wont be fiable due to the fact that it will always be turned on the wider part and not on the edge. Am I right?
– Edward Constantin
Dec 28 '18 at 22:47
If it is ferromagnetic (iron, steel), there will be a torque to align it with the magnetic field. However, magnetic fields have no effect on non-magnetic materials (brass, wood, ceramic) and everything would be normal. It's likely that such a culture would skip the iron age and keep using brass and bronze for inventions and weapons.
– Dr Sheldon
Dec 28 '18 at 23:01
You are experienced in this domain. If an object has a big speed, lets say 44 m/s trough this field, will it obtain an electric charge (basically making it an electric sword?)
– Edward Constantin
Dec 28 '18 at 23:18
1
Theoretically, that will induce a voltage which separates the charges on an object, and is the basis of an electric generator. However, you need a complete circuit for the charge to go anywhere. Also, the voltage induced is far too small to hurt someone -- it's no more harmful than getting hit by a normal sword.
– Dr Sheldon
Dec 28 '18 at 23:30
1
The dielectric strength of air is way too large for that.
– Dr Sheldon
Dec 29 '18 at 0:27
|
show 3 more comments
I used to work for a company that makes 1.5 T and 4 T MRI machines. We used brass tools in and around the magnets.
They did some research into an open magnet design to be used in the operating room during surgeries. The surgeons would have used brass instruments, with ceramic scalpel tips. However, the concept never made it into product.
It should be noted that in a magnetic field, torques are a bigger hazard than linear forces. In other words, you are more likely to have a tool twist your wrist than get "sucked" into the magnet.
I used to work for a company that makes 1.5 T and 4 T MRI machines. We used brass tools in and around the magnets.
They did some research into an open magnet design to be used in the operating room during surgeries. The surgeons would have used brass instruments, with ceramic scalpel tips. However, the concept never made it into product.
It should be noted that in a magnetic field, torques are a bigger hazard than linear forces. In other words, you are more likely to have a tool twist your wrist than get "sucked" into the magnet.
answered Dec 28 '18 at 22:42
Dr SheldonDr Sheldon
923318
923318
That means a sword wont be fiable due to the fact that it will always be turned on the wider part and not on the edge. Am I right?
– Edward Constantin
Dec 28 '18 at 22:47
If it is ferromagnetic (iron, steel), there will be a torque to align it with the magnetic field. However, magnetic fields have no effect on non-magnetic materials (brass, wood, ceramic) and everything would be normal. It's likely that such a culture would skip the iron age and keep using brass and bronze for inventions and weapons.
– Dr Sheldon
Dec 28 '18 at 23:01
You are experienced in this domain. If an object has a big speed, lets say 44 m/s trough this field, will it obtain an electric charge (basically making it an electric sword?)
– Edward Constantin
Dec 28 '18 at 23:18
1
Theoretically, that will induce a voltage which separates the charges on an object, and is the basis of an electric generator. However, you need a complete circuit for the charge to go anywhere. Also, the voltage induced is far too small to hurt someone -- it's no more harmful than getting hit by a normal sword.
– Dr Sheldon
Dec 28 '18 at 23:30
1
The dielectric strength of air is way too large for that.
– Dr Sheldon
Dec 29 '18 at 0:27
|
show 3 more comments
That means a sword wont be fiable due to the fact that it will always be turned on the wider part and not on the edge. Am I right?
– Edward Constantin
Dec 28 '18 at 22:47
If it is ferromagnetic (iron, steel), there will be a torque to align it with the magnetic field. However, magnetic fields have no effect on non-magnetic materials (brass, wood, ceramic) and everything would be normal. It's likely that such a culture would skip the iron age and keep using brass and bronze for inventions and weapons.
– Dr Sheldon
Dec 28 '18 at 23:01
You are experienced in this domain. If an object has a big speed, lets say 44 m/s trough this field, will it obtain an electric charge (basically making it an electric sword?)
– Edward Constantin
Dec 28 '18 at 23:18
1
Theoretically, that will induce a voltage which separates the charges on an object, and is the basis of an electric generator. However, you need a complete circuit for the charge to go anywhere. Also, the voltage induced is far too small to hurt someone -- it's no more harmful than getting hit by a normal sword.
– Dr Sheldon
Dec 28 '18 at 23:30
1
The dielectric strength of air is way too large for that.
– Dr Sheldon
Dec 29 '18 at 0:27
That means a sword wont be fiable due to the fact that it will always be turned on the wider part and not on the edge. Am I right?
– Edward Constantin
Dec 28 '18 at 22:47
That means a sword wont be fiable due to the fact that it will always be turned on the wider part and not on the edge. Am I right?
– Edward Constantin
Dec 28 '18 at 22:47
If it is ferromagnetic (iron, steel), there will be a torque to align it with the magnetic field. However, magnetic fields have no effect on non-magnetic materials (brass, wood, ceramic) and everything would be normal. It's likely that such a culture would skip the iron age and keep using brass and bronze for inventions and weapons.
– Dr Sheldon
Dec 28 '18 at 23:01
If it is ferromagnetic (iron, steel), there will be a torque to align it with the magnetic field. However, magnetic fields have no effect on non-magnetic materials (brass, wood, ceramic) and everything would be normal. It's likely that such a culture would skip the iron age and keep using brass and bronze for inventions and weapons.
– Dr Sheldon
Dec 28 '18 at 23:01
You are experienced in this domain. If an object has a big speed, lets say 44 m/s trough this field, will it obtain an electric charge (basically making it an electric sword?)
– Edward Constantin
Dec 28 '18 at 23:18
You are experienced in this domain. If an object has a big speed, lets say 44 m/s trough this field, will it obtain an electric charge (basically making it an electric sword?)
– Edward Constantin
Dec 28 '18 at 23:18
1
1
Theoretically, that will induce a voltage which separates the charges on an object, and is the basis of an electric generator. However, you need a complete circuit for the charge to go anywhere. Also, the voltage induced is far too small to hurt someone -- it's no more harmful than getting hit by a normal sword.
– Dr Sheldon
Dec 28 '18 at 23:30
Theoretically, that will induce a voltage which separates the charges on an object, and is the basis of an electric generator. However, you need a complete circuit for the charge to go anywhere. Also, the voltage induced is far too small to hurt someone -- it's no more harmful than getting hit by a normal sword.
– Dr Sheldon
Dec 28 '18 at 23:30
1
1
The dielectric strength of air is way too large for that.
– Dr Sheldon
Dec 29 '18 at 0:27
The dielectric strength of air is way too large for that.
– Dr Sheldon
Dec 29 '18 at 0:27
|
show 3 more comments
Stick with bronze.
You may have heard of the bronze age, a time in which all metal tools were made out of bronze (not iron or steel). Bronze is a non-magnetic metal alloy used in human history to make tools, and weapons, and pretty much anything you would make out of iron.
Bronze is a simple historically friendly answer to a substance that can easily be used in a strong magnetic field.
After the bronze age, a civilization might proceed directly to the plastics age if iron is not feasible.
1
Most non-sparking tools are made out of a bronze alloy; the high copper content prevents sparking. This is a good thing in refineries and petro-chemical plants.
– Catalyst
Dec 28 '18 at 19:21
3
Note that depending on the magnetic field any conductor and thus all metals could be useless as a weapon due to eddy currents, though the implications of such a magnetic field on society will most likely go far beyond the prevention of certain weapons.
– Ezra
Dec 28 '18 at 20:51
add a comment |
Stick with bronze.
You may have heard of the bronze age, a time in which all metal tools were made out of bronze (not iron or steel). Bronze is a non-magnetic metal alloy used in human history to make tools, and weapons, and pretty much anything you would make out of iron.
Bronze is a simple historically friendly answer to a substance that can easily be used in a strong magnetic field.
After the bronze age, a civilization might proceed directly to the plastics age if iron is not feasible.
1
Most non-sparking tools are made out of a bronze alloy; the high copper content prevents sparking. This is a good thing in refineries and petro-chemical plants.
– Catalyst
Dec 28 '18 at 19:21
3
Note that depending on the magnetic field any conductor and thus all metals could be useless as a weapon due to eddy currents, though the implications of such a magnetic field on society will most likely go far beyond the prevention of certain weapons.
– Ezra
Dec 28 '18 at 20:51
add a comment |
Stick with bronze.
You may have heard of the bronze age, a time in which all metal tools were made out of bronze (not iron or steel). Bronze is a non-magnetic metal alloy used in human history to make tools, and weapons, and pretty much anything you would make out of iron.
Bronze is a simple historically friendly answer to a substance that can easily be used in a strong magnetic field.
After the bronze age, a civilization might proceed directly to the plastics age if iron is not feasible.
Stick with bronze.
You may have heard of the bronze age, a time in which all metal tools were made out of bronze (not iron or steel). Bronze is a non-magnetic metal alloy used in human history to make tools, and weapons, and pretty much anything you would make out of iron.
Bronze is a simple historically friendly answer to a substance that can easily be used in a strong magnetic field.
After the bronze age, a civilization might proceed directly to the plastics age if iron is not feasible.
answered Dec 28 '18 at 16:48
Tyler S. LoeperTyler S. Loeper
3,6801726
3,6801726
1
Most non-sparking tools are made out of a bronze alloy; the high copper content prevents sparking. This is a good thing in refineries and petro-chemical plants.
– Catalyst
Dec 28 '18 at 19:21
3
Note that depending on the magnetic field any conductor and thus all metals could be useless as a weapon due to eddy currents, though the implications of such a magnetic field on society will most likely go far beyond the prevention of certain weapons.
– Ezra
Dec 28 '18 at 20:51
add a comment |
1
Most non-sparking tools are made out of a bronze alloy; the high copper content prevents sparking. This is a good thing in refineries and petro-chemical plants.
– Catalyst
Dec 28 '18 at 19:21
3
Note that depending on the magnetic field any conductor and thus all metals could be useless as a weapon due to eddy currents, though the implications of such a magnetic field on society will most likely go far beyond the prevention of certain weapons.
– Ezra
Dec 28 '18 at 20:51
1
1
Most non-sparking tools are made out of a bronze alloy; the high copper content prevents sparking. This is a good thing in refineries and petro-chemical plants.
– Catalyst
Dec 28 '18 at 19:21
Most non-sparking tools are made out of a bronze alloy; the high copper content prevents sparking. This is a good thing in refineries and petro-chemical plants.
– Catalyst
Dec 28 '18 at 19:21
3
3
Note that depending on the magnetic field any conductor and thus all metals could be useless as a weapon due to eddy currents, though the implications of such a magnetic field on society will most likely go far beyond the prevention of certain weapons.
– Ezra
Dec 28 '18 at 20:51
Note that depending on the magnetic field any conductor and thus all metals could be useless as a weapon due to eddy currents, though the implications of such a magnetic field on society will most likely go far beyond the prevention of certain weapons.
– Ezra
Dec 28 '18 at 20:51
add a comment |
Use whatever materials you want:
As you say:
The iron would be attracted by the ground
The thing is that arrows already are attracted to the ground - by gravity. You have to ask just how strong this magnetic field must be to noticeably deflect arrows.
Some experiments have been done on this with bullets including by the Mythbusters but they used non-ferrous ammunition.
The following video however shows an experiment with a powerful neodymium magnet and a steel ball from a low-powered air rifle. There is some deflection but they fire very close to the magnet and I don't suppose your landscape is made of neodymium.
https://youtu.be/pXDLGNKoR2c?t=279
Firing near a the world's most powerful MRI machine that has a 45-ton magnet and generates a 9.4-Tesla magnetic field would definitely deflect or even stop an arrow but there's nowhere to plug one in during medieval times.
The ground would be very magnetic, basically making every iron object much heavier. I think they could use some iron melee weapons in this case if they are very strong
– Edward Constantin
Dec 28 '18 at 17:02
1
Let's say arrows are 5 feet above the ground when fired, then nothing short of a multi-Tesla MRI machine will deflect them appreciably. Incidentally the Earths magnetic field is about 10 micro Teslas
– chasly from UK
Dec 28 '18 at 17:06
add a comment |
Use whatever materials you want:
As you say:
The iron would be attracted by the ground
The thing is that arrows already are attracted to the ground - by gravity. You have to ask just how strong this magnetic field must be to noticeably deflect arrows.
Some experiments have been done on this with bullets including by the Mythbusters but they used non-ferrous ammunition.
The following video however shows an experiment with a powerful neodymium magnet and a steel ball from a low-powered air rifle. There is some deflection but they fire very close to the magnet and I don't suppose your landscape is made of neodymium.
https://youtu.be/pXDLGNKoR2c?t=279
Firing near a the world's most powerful MRI machine that has a 45-ton magnet and generates a 9.4-Tesla magnetic field would definitely deflect or even stop an arrow but there's nowhere to plug one in during medieval times.
The ground would be very magnetic, basically making every iron object much heavier. I think they could use some iron melee weapons in this case if they are very strong
– Edward Constantin
Dec 28 '18 at 17:02
1
Let's say arrows are 5 feet above the ground when fired, then nothing short of a multi-Tesla MRI machine will deflect them appreciably. Incidentally the Earths magnetic field is about 10 micro Teslas
– chasly from UK
Dec 28 '18 at 17:06
add a comment |
Use whatever materials you want:
As you say:
The iron would be attracted by the ground
The thing is that arrows already are attracted to the ground - by gravity. You have to ask just how strong this magnetic field must be to noticeably deflect arrows.
Some experiments have been done on this with bullets including by the Mythbusters but they used non-ferrous ammunition.
The following video however shows an experiment with a powerful neodymium magnet and a steel ball from a low-powered air rifle. There is some deflection but they fire very close to the magnet and I don't suppose your landscape is made of neodymium.
https://youtu.be/pXDLGNKoR2c?t=279
Firing near a the world's most powerful MRI machine that has a 45-ton magnet and generates a 9.4-Tesla magnetic field would definitely deflect or even stop an arrow but there's nowhere to plug one in during medieval times.
Use whatever materials you want:
As you say:
The iron would be attracted by the ground
The thing is that arrows already are attracted to the ground - by gravity. You have to ask just how strong this magnetic field must be to noticeably deflect arrows.
Some experiments have been done on this with bullets including by the Mythbusters but they used non-ferrous ammunition.
The following video however shows an experiment with a powerful neodymium magnet and a steel ball from a low-powered air rifle. There is some deflection but they fire very close to the magnet and I don't suppose your landscape is made of neodymium.
https://youtu.be/pXDLGNKoR2c?t=279
Firing near a the world's most powerful MRI machine that has a 45-ton magnet and generates a 9.4-Tesla magnetic field would definitely deflect or even stop an arrow but there's nowhere to plug one in during medieval times.
edited Dec 28 '18 at 17:08
answered Dec 28 '18 at 16:54
chasly from UKchasly from UK
13.1k359122
13.1k359122
The ground would be very magnetic, basically making every iron object much heavier. I think they could use some iron melee weapons in this case if they are very strong
– Edward Constantin
Dec 28 '18 at 17:02
1
Let's say arrows are 5 feet above the ground when fired, then nothing short of a multi-Tesla MRI machine will deflect them appreciably. Incidentally the Earths magnetic field is about 10 micro Teslas
– chasly from UK
Dec 28 '18 at 17:06
add a comment |
The ground would be very magnetic, basically making every iron object much heavier. I think they could use some iron melee weapons in this case if they are very strong
– Edward Constantin
Dec 28 '18 at 17:02
1
Let's say arrows are 5 feet above the ground when fired, then nothing short of a multi-Tesla MRI machine will deflect them appreciably. Incidentally the Earths magnetic field is about 10 micro Teslas
– chasly from UK
Dec 28 '18 at 17:06
The ground would be very magnetic, basically making every iron object much heavier. I think they could use some iron melee weapons in this case if they are very strong
– Edward Constantin
Dec 28 '18 at 17:02
The ground would be very magnetic, basically making every iron object much heavier. I think they could use some iron melee weapons in this case if they are very strong
– Edward Constantin
Dec 28 '18 at 17:02
1
1
Let's say arrows are 5 feet above the ground when fired, then nothing short of a multi-Tesla MRI machine will deflect them appreciably. Incidentally the Earths magnetic field is about 10 micro Teslas
– chasly from UK
Dec 28 '18 at 17:06
Let's say arrows are 5 feet above the ground when fired, then nothing short of a multi-Tesla MRI machine will deflect them appreciably. Incidentally the Earths magnetic field is about 10 micro Teslas
– chasly from UK
Dec 28 '18 at 17:06
add a comment |
Since there were many suggestions of non-magnetic metals: They aren't usable for many purposes, specially for fast moving parts: Eddy currents will slow down the motion.
So the culture should go for isolating materials: Wood, ceramics, and glass.
add a comment |
Since there were many suggestions of non-magnetic metals: They aren't usable for many purposes, specially for fast moving parts: Eddy currents will slow down the motion.
So the culture should go for isolating materials: Wood, ceramics, and glass.
add a comment |
Since there were many suggestions of non-magnetic metals: They aren't usable for many purposes, specially for fast moving parts: Eddy currents will slow down the motion.
So the culture should go for isolating materials: Wood, ceramics, and glass.
Since there were many suggestions of non-magnetic metals: They aren't usable for many purposes, specially for fast moving parts: Eddy currents will slow down the motion.
So the culture should go for isolating materials: Wood, ceramics, and glass.
answered Dec 28 '18 at 23:16
jknappenjknappen
2,7191929
2,7191929
add a comment |
add a comment |
Thanks for contributing an answer to Worldbuilding Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fworldbuilding.stackexchange.com%2fquestions%2f135027%2fmaterial-for-weapons-and-tools-in-a-magnetic-field%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
5
I don't really understand how a planetary magnetic field could 'prevent' the use of iron. What do you mean by prevent? Does it rust or explode or break or simply fade away?
– kineticcrusher
Dec 28 '18 at 16:21
1
Does this mean that no metals that are affected by magnets can be used? Can they even be used to make other alloys? Because not all iron based steels can be affected by magnets.
– K Mo
Dec 28 '18 at 16:28
1
@EdwardConstantin - There's a number of different magnetic materials, of which iron is probably the best known. I think a clarifying question would be "how strong is your planet's magnetic field?" and/or "how large an area does the magnetic field cover?". Note that magnetic fields fall off as the cube of the distance, so your field strength would be absolutely enormous - you might want to figure out at what point moving the object generates a noticeable electric charge.
– Clockwork-Muse
Dec 28 '18 at 18:18
1
keep in mind that way before the effects on iron weapons can be felt, humans would have a really bad time for being subjected to strong permanent magnetic fields.
– brett
Dec 29 '18 at 11:26
1
@Mazura check out the Adverse Events at the end of this article: fda.gov/Radiation-EmittingProducts/…. The thing is MRI is usually performed over a short timespan and there are [albeit rare] side effects. I imagine living long-term in such a field would affect even the less-sensitive people. Plus there's also iron in blood. Some effects would definitely have to be felt over time, if there were such a strong field that would affect iron tools/weapons.
– brett
Dec 29 '18 at 21:47