SteveZilla Posted December 28, 2012 Report Share Posted December 28, 2012 Re: Longest Running Thread EVER The world's largest Tesla coils will be 10 stories high and generate 200-foot-long arcs of high-voltage electricity. From The Discovernator (Crazy Amazing Facts Served Up Hot) - part of The Discovery Channel's site. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 28, 2012 Report Share Posted December 28, 2012 Re: Longest Running Thread EVER I wonder how much x-ray dose will be delivered when it's going. Quote Link to comment Share on other sites More sharing options...
SteveZilla Posted December 29, 2012 Report Share Posted December 29, 2012 Re: Longest Running Thread EVER I wonder how much x-ray dose will be delivered when it's going. Without an x-ray tube, how can a Tesla Coil cause X-ray emission, and would it be more than an incidental amount? Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 29, 2012 Report Share Posted December 29, 2012 Re: Longest Running Thread EVER If you have thousands of volts, then you have multi-keV electrons, almost by definition. If those suffer a strong impact, then there will be x-rays generated. An X-ray tube is particularly efficient at making x-rays because the set-up produces collimated high-energy electrons, and stops them all in the same place moving with the same direction, which makes the x-rays more or less all the same energy and more or less all in the same direction, in a useful beam, without needing a great deal of current to make a useful amount of x-rays. Around a strongly arcing source, the x-rays will be more of a diffuse omnidirectional bath. That would hazardous to delicate equipment, undeveloped photographic media, and the operators of the arcing equipment, since only they are around long enough to accumulate a hazardous dose. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 29, 2012 Report Share Posted December 29, 2012 Re: Longest Running Thread EVER I. e., it's a Radiation Accident waiting to happen. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 29, 2012 Report Share Posted December 29, 2012 Re: Longest Running Thread EVER Not accident, because it doesn't have the potential of a strong, sudden outburst. When it runs, it is a chronic sourse. And chronic sources can affect strongly those who spend lots of time in the vicinity. Quote Link to comment Share on other sites More sharing options...
SteveZilla Posted January 1, 2013 Report Share Posted January 1, 2013 Re: Longest Running Thread EVER I would think that even a modest distance would be sufficient to make it mostly irrelevant because of the Inverse Square Law? Quote Link to comment Share on other sites More sharing options...
Cancer Posted January 2, 2013 Report Share Posted January 2, 2013 Re: Longest Running Thread EVER Well, it's not like you get x-ray doage from anywhere else, usually. Frankly, I would have to find out how much current such a coil was going to release, then assume some number of x-ray photons per electron released, find how to run that x-ray release into radiation dose, and see how dangerous it is. I know my department chair here was pretty firm about dismantling a tesla coil when the lab manager and a student cobbled on together a few years ago, but I don't know how big a hazard the thing actually was. Quote Link to comment Share on other sites More sharing options...
SteveZilla Posted January 2, 2013 Report Share Posted January 2, 2013 Re: Longest Running Thread EVER Other than the Dentist's, Hospitals, and Orthopedic's... Quote Link to comment Share on other sites More sharing options...
Cancer Posted January 2, 2013 Report Share Posted January 2, 2013 Re: Longest Running Thread EVER Right, but if you don't work in such a facility, then otherwise it's research labs and microlithography fabrication sites. And all of those have pretty tightly controlled on-or-off states and strong radiation dose regulations. Quote Link to comment Share on other sites More sharing options...
Old Man Posted January 2, 2013 Report Share Posted January 2, 2013 Re: Longest Running Thread EVER Well, it's not like you get x-ray doage from anywhere else, usually. Frankly, I would have to find out how much current such a coil was going to release, then assume some number of x-ray photons per electron released, find how to run that x-ray release into radiation dose, and see how dangerous it is. I know my department chair here was pretty firm about dismantling a tesla coil when the lab manager and a student cobbled on together a few years ago, but I don't know how big a hazard the thing actually was. As an x-ray source or an electrocution hazard? Or because of the electric bill? Quote Link to comment Share on other sites More sharing options...
Cancer Posted January 3, 2013 Report Share Posted January 3, 2013 Re: Longest Running Thread EVER I assumed it was the x-ray hazard, but the electric shock might be part of it too. (How well do today's handheld electronics stand up to strong static discharges?) The power use is small, I think. At least, the power cord on the device wasn't anything special. Quote Link to comment Share on other sites More sharing options...
SteveZilla Posted January 3, 2013 Report Share Posted January 3, 2013 Re: Longest Running Thread EVER Very high voltage, but low amperage, so only middling wattage? Quote Link to comment Share on other sites More sharing options...
Cancer Posted January 3, 2013 Report Share Posted January 3, 2013 Re: Longest Running Thread EVER Yeah, on output, certainly, averaged over time. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted January 3, 2013 Report Share Posted January 3, 2013 Re: Longest Running Thread EVER Meager wattage? Bah. So much for weaponizing this whole shebang. Quote Link to comment Share on other sites More sharing options...
SteveZilla Posted January 4, 2013 Report Share Posted January 4, 2013 Re: Longest Running Thread EVER It is full of sound and fury, signifying nothing. Quote Link to comment Share on other sites More sharing options...
Cancer Posted January 4, 2013 Report Share Posted January 4, 2013 Re: Longest Running Thread EVER kind of like foreign policy. Quote Link to comment Share on other sites More sharing options...
Bazza Posted January 4, 2013 Report Share Posted January 4, 2013 Re: Longest Running Thread EVER that is because your foreign policy is outsourced to CFR and our foreign policy is outsourced to the USA. Quote Link to comment Share on other sites More sharing options...
Cancer Posted January 6, 2013 Report Share Posted January 6, 2013 Re: Longest Running Thread EVER Hmmmm. Which of those is more depressing? Quote Link to comment Share on other sites More sharing options...
Bazza Posted January 6, 2013 Report Share Posted January 6, 2013 Re: Longest Running Thread EVER Hmmmm. Which of those is more depressing? both equally depressing Quote Link to comment Share on other sites More sharing options...
Cancer Posted January 6, 2013 Report Share Posted January 6, 2013 Re: Longest Running Thread EVER Depends on where you are, I think. Quote Link to comment Share on other sites More sharing options...
Bazza Posted January 6, 2013 Report Share Posted January 6, 2013 Re: Longest Running Thread EVER that is also true Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted January 6, 2013 Report Share Posted January 6, 2013 Re: Longest Running Thread EVER Truth is as truth does. Quote Link to comment Share on other sites More sharing options...
Cancer Posted January 6, 2013 Report Share Posted January 6, 2013 Re: Longest Running Thread EVER Depends on what's being labeled as "truth" at the moment in question. Quote Link to comment Share on other sites More sharing options...
RPMiller Posted January 6, 2013 Report Share Posted January 6, 2013 Re: Longest Running Thread EVER And since the winners get to write the "truth," we may never know. Quote Link to comment Share on other sites More sharing options...
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