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> Monowire and defenses against it
booklord
post Jul 22 2004, 05:23 PM
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Quick question here.......

Mono-wire is stretched across a hallway so it will cut through anything moving through that hallway. Sounds good so far.

But wouldn't such a wire vibrate when exposed to the open air of the hallway? Wouldn't that vibration create a high-frequency noise? And now for the kicker wouldn't someone with high freq hearing mod be able to hear it?
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Austere Emancipa...
post Jul 22 2004, 05:29 PM
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QUOTE (booklord)
But wouldn't such a wire vibrate when exposed to the open air of the hallway? Wouldn't that vibration create a high-frequency noise?

I'm pretty sure the volume of sound is dependent on the mass of the vibrating object -- which is just plain too small in this case. Also, it is quite unlikely that the sound would be beyond the hearing range of the human ear -- it would have to be a very, very short strand of monowire vibrated by a very, very strong air current.

Still, I'm pretty sure the sound volume would be too low for just about anything to register. Can you create an audible noise with a human hair? A monowire should be far less thick still.
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xizor
post Jul 22 2004, 05:39 PM
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damn people that know what they are talking about and type faster than i do.
in other words Austere Emancipator covered what i was going to say. :S
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Austere Emancipa...
post Jul 22 2004, 05:42 PM
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QUOTE (xizor)
damn people that know what they are talking about and type faster than i do.

That rules me out, then. I haven't got a fricken clue what I'm talking about. ;)
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Necrotic Monkey
post Jul 22 2004, 06:39 PM
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Why would monowire hum to begin with? Does dental floss hum when you string it up in a hallway? Barbed wire? Thread? Piano wire? Spider webs? I've never heard any of those hum when I've seen them out in the open (well, for those I've seen -- never saw someone string a piano wire outside).
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Austere Emancipa...
post Jul 22 2004, 06:50 PM
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The physical properties of barbed wire, piano wire or spider webs are quite unlike those of monowire -- any monowire. I'm pretty sure you could make dental floss or thread hum if you stretched it rather stout across a hallway and then blew at it with a fan. Not exactly likely to happen accidentally with wind or air conditioning, and monowire would still likely be too thin to make any significant sound. How flexible is monowire, BTW?
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Cray74
post Jul 22 2004, 07:10 PM
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QUOTE (Austere Emancipator)
The physical properties of barbed wire, piano wire or spider webs are quite unlike those of monowire -- any monowire. I'm pretty sure you could make dental floss or thread hum if you stretched it rather stout across a hallway and then blew at it with a fan. Not exactly likely to happen accidentally with wind or air conditioning, and monowire would still likely be too thin to make any significant sound. How flexible is monowire, BTW?

It's probably very flexible in terms of how sharply it can be bent without snapping. The narrower a material is, the less likely it is to break when flexed. Fiberglass is not made of particularly special glass compounds - it's just thin. Monowire should be very flexible even if bulk nanotubes are brittle.

In terms of stretchiness (how much monowire's length will change when the ends are tugged), monowire's probably very stiff and will only tolerate a 0.2% length change, give or take.
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Austere Emancipa...
post Jul 22 2004, 07:14 PM
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Stretchiness was what I was looking for, yeah. With that in mind, making monowire hum would be nearly impossible simply because a taut monowire would snap if vibrated even a little bit.
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Voran
post Jul 23 2004, 08:22 AM
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Wow. Nice discussion that's sprung up :) Been very informative.
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Cray74
post Jul 23 2004, 10:25 AM
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QUOTE (Austere Emancipator)
Stretchiness was what I was looking for, yeah. With that in mind, making monowire hum would be nearly impossible simply because a taut monowire would snap if vibrated even a little bit.

I've been thinking about this a bit. I suspect monowire would show more stretchiness than 0.2%, which is the norm for bulk materials. Material properties get weird with ultra-thin fibers. Then again, aligned-molecule polymers (like processed kevlar and spectra) tend to have low maximum stretch compared to other plastics because, as part of their creation, they were stretched (which is how the molecules are lined up in the first place). I'll revise my monowire stretchiness guess to 1-2%.

A taut monowire might cause a kind of whistle if wind blew over it. Or not.
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Voran
post Jul 23 2010, 05:45 PM
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THRREEEEEEAD NECRO!


Anyway, I had some ongoing questions of similar nature re: Monowire, and wanted to see if any new information/ideas have popped up in the...*giggle*...6 years (TO THE DAY) this topic last saw air.
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The Grue Master
post Jul 23 2010, 06:42 PM
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Silly string.
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Cabral
post Jul 23 2010, 07:53 PM
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If your commlink starts randomly expounding upon the virtues of Ares brand monowire, stop and thank the Security team for not using tag erasers.
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Udoshi
post Jul 24 2010, 01:17 AM
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Oh god thread necro

The easiest way to protect yourself from monowire traps is still the same - a really high perception check. That, or a Radar/Ultrasound system a tacnet, which should notice it and point out OH GOD DON'T STEP THERE.
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Daylen
post Jul 24 2010, 01:50 AM
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Am I the only one bothered by the physical impossibilities of a one micron thick mono-filament being used as a whip?


For any who have a dumb look on their face after reading that: mass to surface area ratio of such a filament would mean that it would not move so quickly in a direction perpendicular to the direction the end is pointing. It would simply follow the path of the hand trying to use it.
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Dumori
post Jul 24 2010, 01:55 AM
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Well it is weighted at one end other wise yes it would be totally unusable even if you hit it will have so little force behind it to use. Whighted to use the path of the whitgh to drag the cable its less a whip more a weapon we don't really have an anaolg for.
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Voran
post Jul 24 2010, 08:04 AM
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Side question re: monofilament stuff. How much strength/force is required to use it? Example: Lets say you had a 'switchblade' like 'knife', the push out type instead of the flip type. Instead of a blade, the knife pushed out an holding bar with a secured monofilament.

For an appropriate visual, check out images for the wii game No more heroes, but instead of the 'lightsaber' imagine that sword is smaller scale, and the light-sword part is the monofilament. The resultant blade would be only as thick as the securing 'spine', less than the diameter of a pencil, for example. Consequently, would you be able to slip that blade under a restraint like handcuffs, etc, and simply do a counter or clockwise turn of the 'blade' so the monofilament presses up against the restraint. You'd be protected from 'accidentally' turning it into your flesh as the top and bottom brackets securing the monofilament would be initially flush with the plane of your flesh. You'd have to use an alternate 'saw' method like taking a paper cutter to paper if the restraint were too big to get all at once.
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Badmoodguy88
post Jul 24 2010, 10:05 PM
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Voran I like the idea but in combat it could only cut as deep as the distance between the mono and the thing holding it.

Also as for armor I had a thought.

Imagine a chain link fence that for the sake of argument was strong enough to stand up to the mono filament. Try to hit something immediately on the other side of it with a whip. Or the slash (not stab) of a sword. Now imagine that wrapped around armor. Embedded into it. it would work well on flat parts like the main trunk of the body, but on more rounded areas it would need to be a tighter weave of mono resistant materiel. What you would have is like a chain link fence. No protection from bullets, lasers, or arrows. Little to no protection from blunt attack but increased protection from slashing attacks where directly contacting the blade to the target matters.

It would be like an armor mod that added to armor just against slashing and mono whip. But it should probably be stated specially and not just remove the armor value cut in half and comes in rating up to 6. For 6 more points of impact armor against swords and whips.
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Voran
post Jul 24 2010, 10:34 PM
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Yeah, the mono-switchblade isn't really intended for combat, though it'd be great for cutting someone's ear off (IMG:style_emoticons/default/nyahnyah.gif) Ideally, it'd be something you could stash in an arm or leg 'smuggler' compartment to pop out in case you got captured and restrained. Due to the thickness (thinness) of the 'blade' you could likely slip it between the space of the restraint, then turn. Then 'snip' kinda like superpowered scissors.
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Bodak
post Jul 24 2016, 05:08 AM
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QUOTE (Voran @ Jul 23 2010, 05:45 PM) *
THRREEEEEEAD NECRO!
Anyway, I had some ongoing questions of similar nature re: Monowire, and wanted to see if any new information/ideas have popped up in the...*giggle*...6 years (TO THE DAY) this topic last saw air.
Just as true today as the day it was written.

QUOTE (Thistledown @ Jul 21 2004, 03:43 PM) *
In my group, we treat monowire as buckytubes - long carbon chains. They don't break but certain ceramics will stop it. Working with it requires special tools with monowire embedded in them.

In fact, I had a contact once who had managed to get the kit used to install the stuff, then just went around to corporate facilities taking the monowire from the top of their fences. Nevermind going inside when stuff that 'rare' is hanging around the entire place.
Facilities might not use monowire on their fences:
  • monowire is detailed on SR4a p260 with damage code 8P
  • microwire is detailed on SR4a p337 with damage code 8P, however its availability is 4 and it can be handled with Rappelling Gloves
If you're going to be stringing up a kilometre of perimeter defences you're going to pick microwire for cost and insurance reasons. Rappelling Gloves aren't too hard to acquire.

By the same token, if you're a Shadowrunner and want a small spool of rather sharp material without the risk of monowire's legality rating, you'd also pick microwire.

QUOTE (Necrotic Monkey @ Jul 22 2004, 06:39 PM) *
QUOTE (booklord @ Jul 22 2004, 05:23 PM) *
Mono-wire is stretched across a hallway so it will cut through anything moving through that hallway. Sounds good so far.

But wouldn't such a wire vibrate when exposed to the open air of the hallway? Wouldn't that vibration create a high-frequency noise?
Why would monowire hum to begin with? Does dental floss hum when you string it up in a hallway? Barbed wire? Thread? Piano wire? Spider webs? I've never heard any of those hum when I've seen them out in the open (well, for those I've seen -- never saw someone string a piano wire outside).
Well fence wire resonates in the wind. At least, I've heard it do so when I've seen it out in the open. The phenomenon is known as aeroelastic flutter. If you've seen a shopping trolley wheel flutter or accelerated a motorcycle without a steering damper you've observed a similar system on a much larger scale.

Even so, considering a resonating string on an electric guitar not plugged into an amplifier is very quiet, a resonating monowire's harmonics will easily be drowned out by background noises such as the character (with the high-frequency hearing)'s heartbeat, clothes rubbing on each other, capacitors in worn / implanted tech, etc. Since the wavelength of the sound depends on how wide the hallway is, one couldn't learn to identify it based on a specific typical frequency the way one knows 50Hz mains hum whenever it rears its ugly head.

Perhaps a more practical detection method would be to encourage condensation, as that will cause water to bead on the wire and drop off once sufficient has collected to overcome surface tension. That might be as simple as using the building's fire-extinguishers for a while and watching where condensation forms.
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Bodak
post Jul 24 2016, 05:17 AM
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QUOTE (Thistledown @ Apr 15 2004, 06:57 AM) *
One thing that I've thought about on it. Many corps use it as a top to their fences. This means that somebody must be using some kind of kit to install it. A goal of one of my characters: get a hold of one of those kits. Then just go to any random corp, and start taking the monowire off the fence and keeping it. Security won't realize right away that your target is the fence, not the stuff in the building, so it's pretty easy to get away with it. With that kind of street index and availability, you'll be sitting pretty real quick.
Just look up Rappelling Gloves.
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tisoz
post Jul 24 2016, 07:38 PM
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Mark the calendar now for 2022. A tradition is starting.
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Stahlseele
post Jul 27 2016, 02:04 PM
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Get a Tower-Shield.
Carry it in front of you.
Problem solved?
Have no shield?
Use the groups Elf.
The groups Elf also doubles as a handy detector for electric fences.
Or if no Elf in group, try and find a guard instead.

Or for the more "humane" option:
The adventurers 11' Science Pole.
For stuff you would not touch with an 10' Pole.
Now available in collapsible/telescoping/folding.
Available in Densiplast, Ceramics, Titanium/Alluminium-Alloy.

Bit more expensive:
Drone with vehicular Armor to drive in front of you.

Bit more inhumane than the Elf:
Use a Spirit, preferably Earth/Stone/City-Spirit materialized for the same purpose.
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Iduno
post Jul 27 2016, 02:56 PM
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QUOTE (Stahlseele @ Jul 27 2016, 09:04 AM) *
Bit more inhumane than the Elf:
Use a Spirit, preferably Earth/Stone/City-Spirit materialized for the same purpose.


That one might be a problem. Spirits are (arguably) people, or at least deserving of the same rights.
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Stahlseele
post Jul 27 2016, 03:08 PM
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QUOTE (Iduno @ Jul 27 2016, 04:56 PM) *
That one might be a problem. Spirits are (arguably) people, or at least deserving of the same rights.

Yeah, at least in Denver you will get into big, scaly trouble for that.
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