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Could you use marble, at a slightly higher voltage? That is what our silver re-claimer used to use as an electrode to collect the silver. Easy to get the silver off of them too. The stainless steel tank is one electrode, the marble is the other. Sincerely, William McCormick
Quote from: William McCormick on 18/08/2012 03:40:25Dielectrics conduct electricity the fastest of all, but at reduced current. Sincerely, William McCormick So you have chosen to carry on talking bollocks then.
Dielectrics conduct electricity the fastest of all, but at reduced current. Sincerely, William McCormick
You clearly have no idea what you are talking about , saying things like "The Green Berets used to use silver wire, the slowest of all conductors on earth"There are two major factors that influence the speed of an electrical signal through a wire. The conductivity of the wire and the nature of the insulator (specifically its dielectric constant).Since silver has the highest conductivity it gives the fastest propagation of the current (all other things being equal, though the effect of the insulator usually dominates the calculation of the speed)"When you see zero ohms on an electrical meter, it does not mean that something out there like silver cannot create even less ohms. It is done that way because most of our stuff is made of copper, the wire, the PC boards you name it. So unity in this case is zero ohms for copper of a short length. Silver would be minus or negative ohms. "More dross.The resistivity of silver is only a little less than that of copper. It certainly isn't zero or (even more stupidly) negative.http://en.wikipedia.org/wiki/ResistivityDid you actually read your rant before you posted t?Do you think that , for example "The other point, or terminal, that is not abundant with particles of electricity, maintains its voltage, with very little amperage applied. Thanks to air being so quick to match the surface voltage of less powerful insulators. " means anything?"Look at the resistor or element in a soldering gun, it is a heavy bar of copper, a very large bar of copper, capable of powering heavy electrical equipment. "Nope, just plain wrong again.http://www.maplin.co.uk/replacement-element-for-antex-type-c-soldering-iron-630096?c=maplin&utm_source=gcs&utm_medium=gcs_search&utm_campaign=FR01B&utm_content=Mains+Soldering+IronsThe big lump of copper is the tip or bit and it's not electrically connected to the heater voltage (it's usually grounded)http://www.maplin.co.uk/replacement-tips-for-30w-soldering-iron-n38ac-618483Perhaps most importantly, this "Water when you stand in it actually insulates you from ground."Is dangerous nonsense.
Later in the paragraph there is a discussion about waterproof boots which are generally made out of either thick leather, or rubber. In general they may be good insulators, but one should qualify the conditions when they would be insulators... and potential danger points. For example, I met an electrician who likes to use leather gloves when working at 110V or 220V, but would not use them when wet, or at higher voltages. Likewise, a wet leather boot could be dangerous. Water itself is somewhat odd. It is considered to be a relatively poor electrical conductor. However, what it does is provide excellent surface contact, as well as perhaps soaking into the outer layers of skin, and also soaking through other materials that might otherwise have insulating qualities. Water is also a good solvent for ionic compounds which in turn improve its electrical conductive qualities.I've never had my body jump around due to TIG welding. Most TIG welding is done at relatively low voltage (usually 10 to 30 V). It may have a high frequency, high voltage (but low amperage) start current. Sometimes I'll feel a slight tingle, perhaps due to the high frequency start current, and perhaps improperly grounded work. Your skin is actually a relatively good insulator, so one typically isn't shocked by low voltages. The biggest risks with electricity, of course, are getting an internal shock capable of interrupting the heart circuit, or involuntary muscle contractions which can cause a person to grab onto a wire. And, of course, sever burns at high voltages.None of this has anything to do with the hunt for a carbon electrode, although the original poster seems to have some ideas for things that can be tested.
" Carbon brushes take voltage from white sparks, and transmits it through the birth of the carbon. I would not hold a carbon electrode, and connect or disconnect it under a load. I would also not connect or disconnect a rusty iron part while it is under a load even a low voltage load. "Lunacy!You still need to stop talking rubbish
Quote from: Bored chemist on 19/08/2012 13:50:16" Carbon brushes take voltage from white sparks, and transmits it through the birth of the carbon. I would not hold a carbon electrode, and connect or disconnect it under a load. I would also not connect or disconnect a rusty iron part while it is under a load even a low voltage load. "Lunacy!You still need to stop talking rubbishLunacy, BC?Well the first sentence would certainly suggest that. "Carbon" refers either to an elementary substance, that we would more usually call coke or graphite or charcoal or diamond, or to an element as such, when we say things like "carbon dioxide is 27% carbon and 73% oxygen". It is certainly not the sort of thing that can have a "birth" unless we are talking stellar fusion, supernova or big bang.But the rest of the passage you quote is one of the few parts of the essay where the poster is being quite rational. Behaving with excessive caution is usually not a bad thing, particularly when you understand so little about what you are handling as the poster clearly does.
You may also choose to look up making lye from wood ash. There should be lots of notes about it on the internet.I think I mentioned earlier that carbon fiber mesh would give you rather good surface area, although you may need some kind of structure to separate the cathode and anode.
"That was the "berth" of the carbon brush, the width of the elctrode. The diameter, the circular mills, or rectangular area. A typo my spell catcher does not catch."And who can blame if if you don't just use the wrong word, but you mis-spell it?http://dictionary.reference.com/browse/berthFeel free to find a reference to the use of the word "berth" for an electrode holder.Even one in a language other than English would be interesting.Having said that, the rest of the sentence makes no real sense anyway."Tell people to play with rust and electricity and you are a murderer. Rust is one of the few things that still amazes me, every time I get a shock involving it. Rust creates high voltage from low voltage"More nonsense.(So's most of the rest of it but there's no great merit to repeating it.)Just a thought, when you realised that, on a site full of scientists " obviously no one here knows what I am talking about." did it occur to you that that lack of understanding might be because you talk nonsense?Anyway..."Do you want to make the potassium version the potash version? The book states that you boil down wood ashes to make the caustic. It absorbs carbonic acid, or carbon dioxide though rather quickly, So they add recently burned quick lime to it, to make it very caustic. " Nope, there isn't any caustic potash formed- you get ordinary potash that way.Or in new money you get potassium carbonate by leaching wood ash.You can convert that to caustic potash with slaked lime (quicklime would be dangerously stupid and stupidly dangerous).If you think about it, you will realise that, since fires produce lots of CO2 the one thing they can't possibly make is something that reacts readily with CO2.
http://www.bing.com/Dictionary/search?q=define+berth&qpvt=berth&FORM=DTPDIAIt means the width of a ship or as we use it in America, the width of an object.