conductor type used,electrical,chemical,mechanical insulations
135815
Pressure tight cables are available. Moreover if the entire length of the cable is under the same pressure, any ordinary power Cable will do.
38155
Well, gypsum is a good insulator.  Its resistance would depend on what impurities (such as moisture) were present in it.  \n\nIf you are planning on using this with high voltage,  you should be more concerned with the dielectric breakdown voltage than the resistance.  This is the voltage at which a material that is normally an insulator will begin to permit electricity to arc through it.  Check the link below for more information.
24458
Kinetic, potential, nuclear, chemical and electrical.
365849
Sodium bicarbonate in solid form is a poor conductor.    However, it will ionize when dissolved in water and conduct electricity then.
336058
Polyethersulfone (PESU)\nPolyphenylene Sulfide (PPS)\nPolyvinylidinefluoride (PVDF)\n\nMany Properties of these and hundreds of materials can be found at matweb.com
533232
Best ones are the metal elements with "spare" electrons.\nGold\nSilver\nLead\nCopper\nIron\nEtc.\nPS Pure water doesn't conduct electricity - it's the impurities or trace elements that do the conducting
82420
all materials I know can be charged BUT they must be insulated from earthing.\n\nGlass rubbed with silk is one of the more curious ones I remember from school.
109166
http://electroactive-polymers.brainsip.com/ - Try this website. It contains a complete description of what you are looking for.
176028
here is one of the datasheets available on the internet:\nhttp://www.ee.washington.edu/stores/DataSheets/74ls/74ls73.pdf
15080
I don't know the specific name for it, but, in telecommunications, there is a certain type of plastic used for insulating wires.  This insulation is known as self extinguishing, in that, as heat is applied to it and it gets to the point where it starts to try to burn, it releases some kind of gas that extinguishes the combustion that is beginning to take place.
291348
electromagnetic or magnetic fields. It is easiest to research and to do the practical of. Just place the magnets and use iron filings to measure it
254550
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
331112
Cords can heat up with high current. If the cord is out, then it can cool effectively. If it is rolled up, the inside can overheat.\n\n---------------\n\nInductance isn't a factor. We are talking about only 50 or 60 Hz, and extension cords have fairly large conductors (low inductance). Compare this with a transformer, both wire size and the number of windings, and the reeled extension cord doesn't really come close.\n\nExtension cord ratings are based strictly on the current that can be handled safely.
20670
Perspex is a plastic...a non-conductor.\n\nCopper is a conductor. Conductors don't hold charge, they conduct it, meaning they transport it away.\n'Charging' up a conductor may transfer charge to it, but it will easily 'conduct' it away from itself.\n\nThe plastic rod won't conduct, so as charge is transferreed to it, the charge is sort of trapped on the rod, and builds until a noticeable static charge builds.
482232
No one can answer that question without looking at the building. Sometimes you just never know. If it is so old, the electrical may need replacing. Does the insulation has asbestos? Termite damage anywhere? Weak floors? New roof needed? Have a house inspection done. He will tell you what needs to be done. Take that to a reputable contractor, he will give you his labor costs. Buy the material that is needed and then add 25% to everything for things they forgot.
520822
Tungsten has at least three times the melting point of copper, and they are both conductors, but when it comes to electricity, Copper is the winner, because Tungsten has more resistance to electricity therefore it is less conductive than Copper.\n\nTungsten due to its resistance is used in Light bulbs,\nand copper, which is more malleble  is used in mostly covering wires.\n\nHope it helps,
448256
Wood.  Wood is an insulator.  The other materials conduct electricity.