It sounds like this transformer had its center tap grounded and was the path to ground on one side of a ground loop as the geomagnetic field moved under pressure from a CME, inducing a common-mode current in the long-distance power line. A gas pipeline in an area of poor ground conductivity in Russia was also destroyed, it is said, resulting in 500 deaths.
One can protect against this phenomenon by use of common-mode breakers and perhaps even overheat breakers. The system will not stay up but nor will it be destroyed. This is a high-current rather than high-voltage phenomenon and thus the various methods used to dissipate lightning currents might not be effective.
CAs normally issue certs with 1-year validity. As they may not expire later than 2015-11-01, CAs will mostly stop issuing them on 2014-11-01. I guess you could ask them to cut a cert with a special, shorter lifetime but that would be hassle (and therefore extra cost).
"spazzies"? Really? You know, before the car accident that screwed me up, I was perfectly normal. Now that they've done surgery to correct the issue, I'm perfectly normal, with a little extra titanium hardware. We're all one car accident away from having the same issues. That is, unless you never leave your mother's basement.
In March 1989 much of Quebec lost power for the same thing.
They lost power because the common-mode breakers tripped, not because their system was actually damaged.
Ya.. There are are a bunch of whiny bitches here.
Thanks. I am so delighted it got fixed. It only took about 1.5 years and a half dozen "expert" doctors to find one who knew what he was doing. I had sympathy for people who couldn't get around before. Now I have a *lot* more.
Only if you're lucky. Well, I think SW does that. No other airlines I fly do. I don't really care about kids. My ears have never really tolerated flying much, so I have to use the pressure relieving earplugs. Wearing noise cancelling headphones over them, I can barely tell the engines are running, much less screaming children.
No, you really want them to board first.
For the last year, up until last month, I was barely able to walk. I still had to fly for work. I boarded flights with the kids and anyone else that needed help.
The parent doesn't just stow their stuff and sit down. They stow the kids bags, get the kids to sit down, shut up, buckles on, no you can't go to the bathroom, blah, blah, blah.
For me, it took me about 4x as long just to get down the airway. A guy barely walking down the ramp with passengers walking normal speed definitely held up the flow, no matter how much room I tried to leave. I still got held up by the parents with kids, and I didn't care. I'd just sit on the nearest armrest until they were done.
You don't want me, or the parents with kids slowing you down. People are assholes enough boarding planes.
If you wait for them to board last, now you'll have parents trying to stow bags in the last few spots (if there are any), trying to get the kids in their seats at the same time, and having the kid(s) climbing over other passengers.
For me, barely able to walk, if I had to take the window seat, that would mean everyone in the other seat(s) would have to move. Walking on a cane, I wasn't able to just squeeze by anyone, especially if there were no good seats available. It was still hard just to get *to* the window seat.
And before any of you complain, since surgery I can walk fine. The cane is retired at least for another 30 years.
Dear Congressperson Lee,
The U.S. is dependent on the Russians for present and future access to space. Only Soyuz can bring astronauts to and from the Space Station. The space vehicles being built by United Launch Alliance are designed around a Russian engine. NASA's own design for a crewed rocket is in its infancy and will not be useful for a decade, if it ever flies.
Mr. Putin has become much too bold because of other nations dependence. The recent loss of Malaysia Air MH17 and all aboard is one consequence.
Ending our dependency on Russia for access to space, sooner than we previously planned, has become critical. SpaceX has announced the crewed version of their Dragon spaceship. They have had multiple successful flights and returns to Earth of the un-crewed Dragon and their Falcon 9 rocket, which are without unfortunate foreign dependencies. SpaceX is pursuing development using private funds. The U.S. should now support and accelerate that development.
SpaceX has, after only a decade of development, demonstrated many advances over existing and planned paths to space. Recently they have twice successfully brought the first stage of their Falcon 9 rocket back to the ocean surface at a speed that would allow safe landing on ground. They have demonstrated many times the safe takeoff, flight to significant altitude, ground landing and re-flight of two similar test rockets. In October they plan the touchdown of their rocket's first stage on a barge at sea, and its recovery and re-use after a full flight to space. Should their plan for a reusable first-stage, second, and crew vehicle be achieved, it could result in a reduction in the cost of access to space to perhaps 1/100 of the current "astronomical" price. This would open a new frontier to economical access in a way not witnessed by our nation since the transcontinental railroad. The U.S. should now support this effort and reap its tremendous economic rewards.
This plan is not without risk, and like all space research there will be failures, delays, and eventually lost life. However, the many successes of SpaceX argue for our increased support now, and the potential of tremendous benefit to our nation and the world.
Please write back to me.
Math is all about being precise, logical.. Communicating exactly one concept at a time. Natural languages do neither.
Except math is almost never actually done that way in practice. Euclid was wonderful, but almost all modern math does not work that strictly (and Euclid really should have been more careful with the parallel postulate -- there's "more than one thing at a time" involved there). Yes, proofs are careful and detailed, but so is, say, technical writing in English. Except for a few cases (check out metamath.org, or Homotopy Type Theory) almost no-one actually pedantically lays out all the formal steps introducing "only one concept at a time".
Not every programmer deals with these [mathematical] questions regularly (which is why I donâ(TM)t think math is necessary to be a programmer), but if you want to be a great programmer you had better bet youâ(TM)ll need it.
I don't think you need math even to be a great programmer. I do think a lot of great programmers are people who think in mathematical terms and thus benefit from mathematics. But I also believe you can be a great programmer and not be the sort of person who thinks in those terms. I expect the latter is harder, but then I'm a mathematician so I'm more than read to accept that I have some bias in this topic.
Math IS sequencing. So is using recipes. That is how math works.
Math is a language. Just because you can frame things in that language doesn't mean that that language is necessary. Recipes are often in English. English is sequencing (words are a serial stream after all). That doesn't mean English is necessary for programming (there seem to many competent non-english speaking programmers as far as I can tell).
Disclaimer: I am a professional research mathematician; I do understand math just fine.
College education wastes countless hours teaching academic stuff that a great majority of programmers will not use on the job, while neglecting critical skills that could be immediately useful in a large
Of course there was a time when college education was supposed to be education and not just vocational training.