How thin could copper wire coated with hemp plastic be.?
545055
To answer that question, another must be posed.....\n\nHow thin can you make copper wire?\n\nThe answer is yes, you can insulate copper wire with hemp plastic, as thin as a biodegradable plastic grocery bag\n\nHemp plastic is a cellulose based plastic.\nOnce you introduce it to the soil it will deteriorate, and once again become part of the earth. Hence Biodegradable
505721
Maybe Air packaging it will keep it from melting.
1137609
there is insulation on the wire...........
584084
Copper is a metallic element and I know of no dog that would have it on their menu. I guess, same as lead or any other metal, it could be toxic. Many puppies have chewed on electrical cords (copper wire in side some kind of out side non conductor covering) but I have never heard of it killing them.
278773
486A for Wire Connectors.\nFor secureness test follow the Pull Test requirement per UL. \n\n\nCheck out the following link:
979004
copper is a ductile metal, which means it can be drawn into wires easily, and is not naturally very brittle. however, by certain processes, it can be made brittle. for example, by heat strenthening that is, copper is heated to high temperatures and then suddenly colled by plunging it into water. continuously doing this can make the copper more brittle.
316653
Depends on the application you have for the copper. You can shield it from oxygen and other corrosive agents using a protective atmosphere.\n\nAt 500°C exposed to atmospheric oxygen you will want a solid metal with a stable passivizing surface or too noble to react. Titanium or platinum will probably be overkill, stainless steel may discolour.\n\nOr you might be thinking about a sacrificial anode, leaving the copper intact but dissolving the connected material (e.g. zinc or magnesium).
1053859
Devices could be made smaller. Assuming the price is not a factor and the material is as versatile as Copper then electrical wiring will become very thin. potentially embedded under the paint. Strong electric fields with all kind of gravity defying contraption could be built, imagine your self floating on high magnetic field in your sleep. Where the field is generated with supper conductive electromagnet that does not need electricity since it can work in a closed loop with minimal losses. Imagine cars driven by magnetic fields.\n\nThe is one old movie that I like called BrainStorm (Metro Golden Mayer) the movie is a scifi movie (1983) that show an interesting use of Room temperature SC for use as a small Brain wave (I/O) kind of sensitive receiver and transmitter.
140510
What will work for you depends a lot on what the material to be coated is, on the application, time spent at temperature, heat cycling, peak temperatures, etc.\n\nHere's a non-ablative coating for metals that can withstand sustained temperatures of 850ºC (1560ºF) and thermal shocks from 1030ºC (1885ºF) immediately to a cold water bath:\n\nhttp://www.indestructible.co.uk/cat2/PL134-R1.html
1011938
Resistance does not depend upon the ductility of the metal used in the wire.\nDuctility is the property of the substance to be easily drawn into wires.  This does not effect electrical resistance.
192184
Aluminum Foil\n\nNot a paper actually.
874950
Some weeks ago on Yahoo news they showed an expiriment that actually turn a copper tube invisible, they are still perfecting it couse its only been tryed on that tube.\nAnd some months ago, in Japan a scientist created a coat with plasma screen type material and hook up a camera and everything around him was display on the coat, kinda invisible, this also from Yahoo news.
226234
I'm assuming here that you're building a protective casing around something.\n\nYou still may be able to use metal: If you want the magnetic transparency to be for the purposes of transmitting a signal, you could try making the casing itself your antenna. But, this may only work over short distances, as the shape of any casing is likely to be a poor antenna. You might try attaching an aerial (an antenna that sticks out) to a part of the casing that won't be subject to impact, if there is such a part. If the magnetic field is to provide a locomotive force to something inside the casing, but not the casing itself, then yeah, you probably can't use metal.\n\nIf you can't get ahold of kevlar, you might try wood (try a sturdy laminate, and don't be afraid to reenforce the structure with crossbeams or just thicker material) or other plastics (solid nylon comes to mind -- check around for a plastic shop that will be able to provide you with the material and machine it for you). Stone and concrete are very hard, but probably too hard: they lack resilency, and thus tend to chip and crack.
287343
I would probably use Light Emiting Diodes connected to a low voltage dc source using very small gauge twin-lead wire.
396821
high velocity copper covered lead
491963
it's either copper or iron.  i don't remem ber exactly which one.
233154
I believe your real question is whether a change in conductivity could be detected over time as an oxide coat forms.  Of course, copper wires (say in the windings of motors or transformers) are often insulated by a thin coat of perhaps varnish (for electrical reasons) and will not corode.\n\nHowever, if a wire is used to conduct high voltage or rapidly oscilating current and voltage, there can be a skin effect because electrons repel each other and would push themselves to the "skin" of the conductor.  Oxidation which actually removes some copper (reduces cross-section) and changes the resistance (oxides resist current more than pure copper) would have to reduce conductivity depending upon the extent of oxidation.  The effect should be greater in stranded wire with greater surface area.  That said, it may require lab quality instruments to detect any change which might be rather small.  An ohmeter passes nil current and uses DC (from an internal battery) and may detect little or no change which could become apparent under operating conditions within a sophisticated circuit.