Pool chemistry is, well, chemistry. And despite the offhand IOC statement that "chemistry is not an exact science", chemistry is science. And it's an excellent topic for/.
Maintaining my little 10,000 gallon play pool has been an interesting adventure;
- In Arizona, sunlight and temperature conspire to make pool maintenance a challenge; sunlight by itself both encourages everything you don't want in your pool (algae and bacteria for two) and decomposes chlorine, your most common disinfectant and algaecide. - Cyanuric Acid (CYA), used as a chlorine stabilizer, also binds chlorine so that it is ineffective as a disinfectant etc. And it does not, itself, decompose easily or quickly. CYA is used in residential pools to simplify management (intermittent filtering and circulation mean chlorine levels would fluctuate without stablizer) and to reduce cost (burnt off chlorine requires adding more). Commercial pools don't typically need this, and indoor pools even less. - Chlorine tablets (most commonly Trichloro-S-Triazinetrione) and much granulated chlorine (commonly Calcium Hypochlorite, so-called 'shock') contain CYA, and each bit you use adds CYA to your pool, eventually increasing the concentration to the point that it renders chlorine ineffective. - Now you get to increase the amount of chlorine you use, also increasing the CYA, and the effect compounds itself. - The solution is to drain the pool, reducing the concentrations, and add your chlorine sources to restore the level, starting the cycle again. Yes, you do. - I now use an erosion dispenser that doesn't float, and it works insanely well. CYA levels of 110ppm force my free chlorine levels to test 1ppm, but the pool is clear and free of algae and detectable contaminants. - Commercial and Olympic pools would never use erosion dispensers. I expect them to use gas systems. And using CYA is wrong for these pools because they should be constantly dispensed, constantly monitored, and chlorine expense is
So my challenges are different than those at the Games, but similar in some details.
I tried liquid chlorine (Sodium Hypochlorate, Clorox without the perfume and higher concentrate) for a while, but it's not as effective and requires constantly measuring and pouring, whereas tablets dissolve (erode, hence those floaters called erosion dispensers) without intervention or attention beyond filling it when they are gone. I gave that up without buying or trying to build an automated dispenser, just not worth it yet.
The problem at the Olympics has been well discussed, but from my view as a residential pool owner:
0. They let the chemistry get out of hand. I expect such a pool, at such an event, to be constantly monitored. Inexcusable. 1. Having let it get out of hand, a proper shock by adjusting the pH and alkalinity, using, for instance, a disodiumsalt of ethylenediaminetetraaceticaciddihydratediammoniumsulfate (this is a proprietary product that works), then Calcium Hypochlorate or other chlorine should have cleared the pool overnight. It does mine, even in 90 overnight temps, the only difference being quantities. A filter aid would clear the milky residue that we saw on TV. This process can be used to successfully clear a pool in 12 hours. 2. Using Hydrogen Peroxide wasn't just a mistake, it was malpractice, and I would fire the nimrod that decided that. It is incompatible with chlorine, period. Huge mistake. 3. the filters should be running constantly, not because of demand but because of the critical nature of maintenance. These are used throughout most of the day, are critical to the Games, and no excuses. Similarly the disinfectant systems. It's not about the cost, it's about the money. 4. Each pool should have had its own filtration and disinfectant systems. Of course.
I give the maintenance teams a grade of F. Just incompetent in these pools, and no such failure is acceptable.
I'm not considering a Tesla, but certainly even a Volt wouldn't do that. Since Tesla did so well with autopilot, chevy will do just as well with their software.
My point about the Bible was that despite ample discussion and explanation of time theology, people regularly try to make the same arguments that were answered do long ago, either thinking they have found a new problem, or the old answers simply don't apply. Minimal study would illuminate these issues, but they really don't care, they just want to argue.
So I need a 40 mile range to commute to work. Another 40 miles to get home. Allow 5% for variances, and I need 84 mile range. To pick up the dry cleaning or a rib eye for the grill, make it 90 mile range. Doeable.
Now, if I can charge at work, I need about 50 mile range. And here the math goes to hell.
With the Chevy Volt as an example, a level 2 charger (240v) maxes the Volt's (or a Leaf) charging at 3.3KW, or 10 miles/hour, so I need to charge 4 hours at work to restore a charge for those days I need more than max range. Let's actually assume that the ubiquitous electric car will NOT have 90+ muile range, but more like 50 mile range, to make the batteries affordable. So I need to charge at work.
It seems that this requires 13+ amps. I work with about 3500 other people. If we ALL carpool, those who don't vanpool, I see about 1500 cars out there. Over 9 hours, about a quarter of these cars will need a full charge, a quarter or so a half charge, and about have none - they are within range.
At any given time, of the cars needing a charge, about 350 will be charging. At 13A each, that's 4550A, a new and nontrivial infrastructure to build. And I work in the desert, where this can be buried without a lot of trouble, but still nontrivial. Will employers do this? Oh, and think through the actual infrastructure. Cables, connectors, people driving over cables, taking off with them attached, it gets interesting. My employer will, but not immediately and not all at once.
No, the conversion will be difficult, so I will need a car with that 90+ mile range to avoid charging on the fly.
And since I buy beaters, I'll be buying used electrics that will have at best 70% range, and I'll be using those savings on oil changes and engine/transmission maintenance to do battery repairs and cringe at the thought of the controller frying on a 118 day.
I know people who repair Prius battery packs, and they do a lot of simple mechanical stuff with interconnects. I'm pretty sure I'll figure out how to do that, since I can manage to change tie rod ends and upper manifolds. But electrics will not be without problems...
Oh, dear. The Bible has been debated for 1600+ years, and many keep coming up with the same old refutations answered more than a thousand years ago. Reciting various evidence well understood to refute some 'new' theory in physics is the same problem - belief is virtually impossible to argue with when it becomes faith.
But a new, Fifth Force, that's inventive, figuratively, and solves a multitude of problems, like actually finding Dark Matter. I can find dust in my garage, I just have to wipe. 'Finding' Dark Matter? hmmm...
It seems that this is an example of the 'that's interesting' phenomenon. You know, when scientists are studying something and they see an interesting and unexpected observation.
Such events have led to interesting discoveries. I like this one better than string theory and using Dark Matter to fine tune those equations that 'splain everything.
And at this point, 'like' is entirely appropriate. Gonna need a lot more work to get to certainty.
Slashdot Mirror
The Electoral College serves a specific purpose. If your intent is to stop serving that purpose, be specific, or at least honest.
But do you know the purpose?
"incorrect votes".
That's almost funny. And pathetic.
Yeah. Koreans working for a few bucks internet cafes...
You think you can prevent that? With current technology?
All you really have to do is register 500,000 votes in a district with 60,000 registered voters. Invalidate the election. Hilarity ensues.
Amen.
PS: an improperly fitted lock could let the bomber into the building, and *boom*.
None of which makes ISPs 'antiques'.
"make the ISP a useless antique"
Ah, the magic wires argument. Sure.
It's one of the sites I refer to. Lots of others, but it would be my choice for the only one.
My post was entirely my own. I didn't copy or paste anything except for name of the ammoniated salts.
No, it would not. Hydrogen Peroxide is not used with Chlorine. They could use H2O2, but there isn't any report they do, so I doubt they actually did.
Ok, I'll plow into this.
Pool chemistry is, well, chemistry. And despite the offhand IOC statement that "chemistry is not an exact science", chemistry is science. And it's an excellent topic for /.
Maintaining my little 10,000 gallon play pool has been an interesting adventure;
- In Arizona, sunlight and temperature conspire to make pool maintenance a challenge; sunlight by itself both encourages everything you don't want in your pool (algae and bacteria for two) and decomposes chlorine, your most common disinfectant and algaecide.
- Cyanuric Acid (CYA), used as a chlorine stabilizer, also binds chlorine so that it is ineffective as a disinfectant etc. And it does not, itself, decompose easily or quickly. CYA is used in residential pools to simplify management (intermittent filtering and circulation mean chlorine levels would fluctuate without stablizer) and to reduce cost (burnt off chlorine requires adding more). Commercial pools don't typically need this, and indoor pools even less.
- Chlorine tablets (most commonly Trichloro-S-Triazinetrione) and much granulated chlorine (commonly Calcium Hypochlorite, so-called 'shock') contain CYA, and each bit you use adds CYA to your pool, eventually increasing the concentration to the point that it renders chlorine ineffective.
- Now you get to increase the amount of chlorine you use, also increasing the CYA, and the effect compounds itself.
- The solution is to drain the pool, reducing the concentrations, and add your chlorine sources to restore the level, starting the cycle again. Yes, you do.
- I now use an erosion dispenser that doesn't float, and it works insanely well. CYA levels of 110ppm force my free chlorine levels to test 1ppm, but the pool is clear and free of algae and detectable contaminants.
- Commercial and Olympic pools would never use erosion dispensers. I expect them to use gas systems. And using CYA is wrong for these pools because they should be constantly dispensed, constantly monitored, and chlorine expense is
So my challenges are different than those at the Games, but similar in some details.
I tried liquid chlorine (Sodium Hypochlorate, Clorox without the perfume and higher concentrate) for a while, but it's not as effective and requires constantly measuring and pouring, whereas tablets dissolve (erode, hence those floaters called erosion dispensers) without intervention or attention beyond filling it when they are gone. I gave that up without buying or trying to build an automated dispenser, just not worth it yet.
The problem at the Olympics has been well discussed, but from my view as a residential pool owner:
0. They let the chemistry get out of hand. I expect such a pool, at such an event, to be constantly monitored. Inexcusable.
1. Having let it get out of hand, a proper shock by adjusting the pH and alkalinity, using, for instance, a disodiumsalt of ethylenediaminetetraaceticaciddihydratediammoniumsulfate (this is a proprietary product that works), then Calcium Hypochlorate or other chlorine should have cleared the pool overnight. It does mine, even in 90 overnight temps, the only difference being quantities. A filter aid would clear the milky residue that we saw on TV. This process can be used to successfully clear a pool in 12 hours.
2. Using Hydrogen Peroxide wasn't just a mistake, it was malpractice, and I would fire the nimrod that decided that. It is incompatible with chlorine, period. Huge mistake.
3. the filters should be running constantly, not because of demand but because of the critical nature of maintenance. These are used throughout most of the day, are critical to the Games, and no excuses. Similarly the disinfectant systems. It's not about the cost, it's about the money.
4. Each pool should have had its own filtration and disinfectant systems. Of course.
I give the maintenance teams a grade of F. Just incompetent in these pools, and no such failure is acceptable.
The people that want to develop for this platform will pay. They will be making money with the results.
Me, I'm hoping to manage my 3D printer with one Pi, and my garage door with another. Not a big money maker, either.
The size of the production run has a lot to do with the pricing.
I'm not considering a Tesla, but certainly even a Volt wouldn't do that. Since Tesla did so well with autopilot, chevy will do just as well with their software.
All there is, is the one HuffPo post, not even a name for this new organization.
Typical for a scare tactic. But HuffPo isn't a journalism site, so it's not unfair.
My point about the Bible was that despite ample discussion and explanation of time theology, people regularly try to make the same arguments that were answered do long ago, either thinking they have found a new problem, or the old answers simply don't apply. Minimal study would illuminate these issues, but they really don't care, they just want to argue.
Physics is rotten with arguers...
So I need a 40 mile range to commute to work. Another 40 miles to get home. Allow 5% for variances, and I need 84 mile range. To pick up the dry cleaning or a rib eye for the grill, make it 90 mile range. Doeable.
Now, if I can charge at work, I need about 50 mile range. And here the math goes to hell.
With the Chevy Volt as an example, a level 2 charger (240v) maxes the Volt's (or a Leaf) charging at 3.3KW, or 10 miles/hour, so I need to charge 4 hours at work to restore a charge for those days I need more than max range. Let's actually assume that the ubiquitous electric car will NOT have 90+ muile range, but more like 50 mile range, to make the batteries affordable. So I need to charge at work.
It seems that this requires 13+ amps. I work with about 3500 other people. If we ALL carpool, those who don't vanpool, I see about 1500 cars out there. Over 9 hours, about a quarter of these cars will need a full charge, a quarter or so a half charge, and about have none - they are within range.
At any given time, of the cars needing a charge, about 350 will be charging. At 13A each, that's 4550A, a new and nontrivial infrastructure to build. And I work in the desert, where this can be buried without a lot of trouble, but still nontrivial. Will employers do this? Oh, and think through the actual infrastructure. Cables, connectors, people driving over cables, taking off with them attached, it gets interesting. My employer will, but not immediately and not all at once.
No, the conversion will be difficult, so I will need a car with that 90+ mile range to avoid charging on the fly.
And since I buy beaters, I'll be buying used electrics that will have at best 70% range, and I'll be using those savings on oil changes and engine/transmission maintenance to do battery repairs and cringe at the thought of the controller frying on a 118 day.
I know people who repair Prius battery packs, and they do a lot of simple mechanical stuff with interconnects. I'm pretty sure I'll figure out how to do that, since I can manage to change tie rod ends and upper manifolds. But electrics will not be without problems...
"Koch brothers are putting a fair amount amount of money towards anti-electric car propaganda campaigns"
Citations please? Even one?
Oh, dear. The Bible has been debated for 1600+ years, and many keep coming up with the same old refutations answered more than a thousand years ago. Reciting various evidence well understood to refute some 'new' theory in physics is the same problem - belief is virtually impossible to argue with when it becomes faith.
But a new, Fifth Force, that's inventive, figuratively, and solves a multitude of problems, like actually finding Dark Matter. I can find dust in my garage, I just have to wipe. 'Finding' Dark Matter? hmmm...
You prefer to think it's simpler to believe in what you can't find, rather than what you haven't previously seen?
Interesting application. I'm trying to work that out.
It seems that this is an example of the 'that's interesting' phenomenon. You know, when scientists are studying something and they see an interesting and unexpected observation.
Such events have led to interesting discoveries. I like this one better than string theory and using Dark Matter to fine tune those equations that 'splain everything.
And at this point, 'like' is entirely appropriate. Gonna need a lot more work to get to certainty.
We may be paranoid, but that doesn't mean that they are not, in fact, out to get us...
I cannot diagnose you over the Internet - I am merely encouraging you to go to Christ.
FTFY.
I'm still convinced it was intended to give Lynch the cover to recuse herself. And she did.
That it happened at all should have resulted in her resignation.
Even the Democrats vote their own interests. Some economic, some moral.
And rich Democrats vote. There are many.
The FBI findings were indeed a forgone conclusion. Anyone paying attention at all knew that.
And yes, dinner recess does slow the process down.