How can it not be legal to point out a speed trap when many are announced in advance by the police department and published by local media? For example, near Des Moines, Iowa: http://www.kcci.com/news/traff... Amusingly, one police department near Des Moines publishes the plans on their Facebook page.
The way I see it, the best use of the proposed battery swapping isn't for a quicker charge. It's to allow one to borrow a battery to use/abuse during a road trip. If going on a long road trip, rather than subject one's own battery to the added stress of multiple fast-charge cycles, one has the option to borrow a battery for $60-80 and subject that one to those conditions. If we assume that a new battery is ca. $10k, then the rental is under 1% of battery cost. If a long road trip with multiple fast-charge cycles causes sufficient battery wear (or even just lots of anxiety about the potential effects), then for $60-80 one can get a loaner battery.
How long do you need for a party balloon to stay filled? A normal party balloon will hold hydrogen just fine if the relevant timeframe is on the order of a few days. How do I know? I run an organic chemistry laboratory. My students use normal party balloons (much cheaper than balloons sold by lab supply companies, but equally effective) to set up reactions in a hydrogen atmosphere. Place the reaction flask under vacuum. Backfill the flask by connecting a balloon that was filled from a hydrogen tank. Voila... a reaction under an atmosphere of hydrogen. If everything is well sealed, then the party balloon will not leak an appreciable amount of hydrogen in a day. Mind you, these are party balloons being exposed to harsh organic solvents. In a typical home environment, they should hold up even better.
The power of the plutonium RTGs continually declining is one issue, as already noted. Another issue is the finite amount of hydrazine on board for what little maneuvering may need to be done. See the last paragraph of this page and this article.
Exactly, the technology for anonymous virtual currency already exists. But the Govt would never back such a complete anonymity. Taxation, the backbone of the govt, would be tough to enforce. Hawalas and scammers would enjoy. Now if somewhere to develop a semi-anonymous currency (like cash, with enough effort, you could probably trace it), then we probably can hope for Govt backing.
The problem with this argument is that it assumes there is but one government. Why shouldn't a small nation somewhere choose to offer financial advantages in order to lure business to its locale? (Hint: Several already do.) Why shouldn't this extend potentially to anonymous currency? If there is enough benefit to the nation (infusion of capital, prestige, whatever), then it just might happen.
You don't need to see the sun to track it. Its location is predictable, so you only need to know your current location (easily determined by GPS at installation) and the current date and time.
If the matter is that dense, then it may be the size of a portable device but it still wouldn't be the mass of a portable device. Your basic assumption is that you need x amount of material to detect, and so if you pack the same amount of material tighter you should be able to detect in less space. That seems reasonable to me, but packing into less space won't reduce the mass any.
Furthermore, the store acknowledges that returned iPads appears to be the way the clay fakes got there in the first place. It says so right in the summary.
All the elements of the periodic table are on Earth too, you know
Not necessarily... there may exist natural elements in other environments that are not found anywhere in this solar system. All we know is that for the elements we've discovered so far, there are no gaps. There may also be previously undiscovered isotopes of elements that we do know about.
I am all for space exploration, but we know about all isotopes from right here on earth. From right here on earth, we can study stable isotopes, isotopes so light that their half lives are fractionths of a second, and isotopes so heavy that their half lives are fractionths of a second. Isotopic abundances will vary by location, but the properties of the individual isotopes will be the same.
An inch is defined as exactly 2.54 centimeters. I don't know how much more based on SI units it could be. It's not really any different from how we define minutes, hours, days, and years. Those aren't all factors of 10, either.
Proper science is ALWAYS based upon SI units, not imperial units.
Interesting. I just learned tonight from reading/. that I have not been doing proper science this whole time. My notebook of organic reactions is full of measurements in minutes, hours, and days. In over a decade of organic chemistry research, measurements recorded in seconds account for under 1% of my time measurements. Indeed, my raw time data usually takes the form of hours and minutes from a clock. Quick... how many seconds into the day am I at the exact moment when the second hand reaches 12 o'clock (when I usually do something if I want high precision in my timing) at 15:47? Equally importantly, why should I care?
That's silly. We all know that heat rises. It's true that you want to cut a hole in the floor, but it's to get the cold air. (Don't worry... that heat engine will still work.) You need another hole in the ceiling for the heat to escape. Straddle the hole and hold your laptop right there, and you'll get the best cooling. If you don't believe me, just try it!
Left foot on clutch. Left side of right foot on brake pedal. Right side of right foot partial throttle. Let off clutch pedal far enough for the clutch to bite and transmit enough power to have the car straining forward just a bit. Roll right foot gradually off the brakes and onto the gas while continuing to let off the clutch. With just a little practice, you can pull this off with _zero_ backward rolling. You can do it quickly to get a fast start, or slowly to get a nice slow roll.
I think people who are sending their children to this school will be able to teach their children the necessary computer skills just fine without the help of the school.
I also have yet to meet a piece of paper that gives immediate feedback. However, I have met teachers who can give better targeted and more useful feedback than any computer program. Learning tools are great, but perhaps a bit more emphasis should be given to inspiring and training more good teachers.
But "tiny cuts would get infected, and spread," the reason that you're telling me that a high (absurd, but theoretical) dose of capsacin would lead to mass tissue death, is exactly the outcome the immune system fights against! That part wouldn't be affected at all by turning off nerve receptors. Nor would the clotting process. So how exactly does turning off a receptor in a nerve affect the body's ability to heal? Numbing a cut on the outside of the body certainly doesn't affect the body's ability to heal on the outside. The digestive tract is topologically on the outside, so I fail to see the difference. I'm not trying to be argumentative, but I'm genuinely curious since what you're telling me strikes me as being extremely counterintuitive.
If you took a high enough dose that it depleted those neurons in a certain part of your body, especially your insides, it would be similar to having leprosy. Tiny cuts would get infected, and spread, and eventually you would have mass tissue death.
Can you provide some refereed papers in support of this? It makes no sense to me since the immune system is not governed by the nervous system. No signal in the nervous system would mean no sensation, but it wouldn't mean that the immune system would stop responding to any effects. There are no nerves from the brain to the white blood cells.
Zero-G manufacturing of larger equipment, for instance, is something that can't be done on Earth.
Suppose you can build some large equipment in space with manufacturing advantages. (Never mind all the effort to set up such a manufacturing base.) How exactly would you get it back to earth where it's needed? It's not like you can just give that fancy gas turbine that you just built a slight retrograde nudge and let it fall back down to earth.
Infinity over infinity can be well defined. Consider that by your same argument, I could not tell you that half the whole numbers are even. After all, there's an infinite number of odd ones, and an infinite number of even ones. All that matters is that we can define rules to map exactly one even number onto each odd number. Therefore, we can prove that half the numbers are even despite the fact that there are an infinite number of both. We can also prove similarly that 1/3 of whole numbers are divisible by three even though the cardinality of those that are and those that aren't is the same.
Doing similarly with the lines in a 2D plane, we can define rules that map onto each line that doesn't intersect (y = b for your reference line y = 0) an infinite number of lines that do intersect (y = mx + b, same value b, unlimited selection of m). Therefore, the ratio between the two classes of lines (those that intersect and those that don't) is well known even though there are an infinite number of them, and the probability can be calculated to be 1.
I'm just an organic chemistry professor, so it's been a while since I've thought seriously about math. Some terminology may be a bit off, and the style may or may not be textbook perfect, but the general sketch of the proof is solid.
Having two screens in a laptop won't solve the problem that a laptop inherently has poor ergonomics. Sure, there's lots of screen real estate, but it's not ideally positioned. That, or the keyboard won't be ideally positioned. To me, this setup seems even worse, with no main screen right in front. Though if you insist on that much screen space in a portable package (4.5 kg isn't so bad compared to laptops from a decade ago), I guess this works.
In the interest of full disclosure, I handled user support on ITA Software's search sites from April 2000 to March 2011. My leaving is due to a change in life circumstances, and has nothing to do with Google.
Maybe I'm expecting too much, but that is a terrible search engine, just like most other airfare search engines on the internet. When I have a specific queries like "On which days is the fare cheapest between airport A and airport B in 2012?", or "graph out all 68808 combinations of departure and return dates in 2012 so that I can pick my travel dates visually" these online search engines are absolutely useless in answering them.
If you search far enough into the future, there generally will be a very large number of travel dates (often the majority) available at the lowest fare. If you're reasonably flexible with your plans, you can find the lowest fare easily. It is easy to find the lowest fare that is currently bookable between airport A and airport B in 2012. Your choice of dates will be somewhat limited since it's still early in 2011, and airlines generally don't make itineraries bookable more than 330 days in advance.
But what you probably really want is not just what the best fare is right now, but how to get the best fare if you have flexibility in both when to travel and when to book. It is impossible to know whether now is the best time to book that fare since fares and fare availability can change at any time in any direction. Airlines sometimes change fares multiple times in a day, and fare availability can change even faster. Furthermore, since these changes are in response to market conditions, even the airlines don't know when the lowest price will be.
Slashdot Mirror
How can it not be legal to point out a speed trap when many are announced in advance by the police department and published by local media? For example, near Des Moines, Iowa: http://www.kcci.com/news/traff... Amusingly, one police department near Des Moines publishes the plans on their Facebook page.
The way I see it, the best use of the proposed battery swapping isn't for a quicker charge. It's to allow one to borrow a battery to use/abuse during a road trip. If going on a long road trip, rather than subject one's own battery to the added stress of multiple fast-charge cycles, one has the option to borrow a battery for $60-80 and subject that one to those conditions. If we assume that a new battery is ca. $10k, then the rental is under 1% of battery cost. If a long road trip with multiple fast-charge cycles causes sufficient battery wear (or even just lots of anxiety about the potential effects), then for $60-80 one can get a loaner battery.
How long do you need for a party balloon to stay filled? A normal party balloon will hold hydrogen just fine if the relevant timeframe is on the order of a few days. How do I know? I run an organic chemistry laboratory. My students use normal party balloons (much cheaper than balloons sold by lab supply companies, but equally effective) to set up reactions in a hydrogen atmosphere. Place the reaction flask under vacuum. Backfill the flask by connecting a balloon that was filled from a hydrogen tank. Voila... a reaction under an atmosphere of hydrogen. If everything is well sealed, then the party balloon will not leak an appreciable amount of hydrogen in a day. Mind you, these are party balloons being exposed to harsh organic solvents. In a typical home environment, they should hold up even better.
The power of the plutonium RTGs continually declining is one issue, as already noted. Another issue is the finite amount of hydrazine on board for what little maneuvering may need to be done. See the last paragraph of this page and this article.
Exactly, the technology for anonymous virtual currency already exists. But the Govt would never back such a complete anonymity. Taxation, the backbone of the govt, would be tough to enforce. Hawalas and scammers would enjoy. Now if somewhere to develop a semi-anonymous currency (like cash, with enough effort, you could probably trace it), then we probably can hope for Govt backing.
The problem with this argument is that it assumes there is but one government. Why shouldn't a small nation somewhere choose to offer financial advantages in order to lure business to its locale? (Hint: Several already do.) Why shouldn't this extend potentially to anonymous currency? If there is enough benefit to the nation (infusion of capital, prestige, whatever), then it just might happen.
In case anyone is looking for the aforementioned Youtube video of the Sousa march: http://www.youtube.com/watch?v=-rNQFUqt49Q
You don't need to see the sun to track it. Its location is predictable, so you only need to know your current location (easily determined by GPS at installation) and the current date and time.
If the matter is that dense, then it may be the size of a portable device but it still wouldn't be the mass of a portable device. Your basic assumption is that you need x amount of material to detect, and so if you pack the same amount of material tighter you should be able to detect in less space. That seems reasonable to me, but packing into less space won't reduce the mass any.
Furthermore, the store acknowledges that returned iPads appears to be the way the clay fakes got there in the first place. It says so right in the summary.
All the elements of the periodic table are on Earth too, you know
Not necessarily... there may exist natural elements in other environments that are not found anywhere in this solar system. All we know is that for the elements we've discovered so far, there are no gaps. There may also be previously undiscovered isotopes of elements that we do know about.
I am all for space exploration, but we know about all isotopes from right here on earth. From right here on earth, we can study stable isotopes, isotopes so light that their half lives are fractionths of a second, and isotopes so heavy that their half lives are fractionths of a second. Isotopic abundances will vary by location, but the properties of the individual isotopes will be the same.
Historical definitions and modern definitions have little in common. The historical definition of the meter was 1/10,000,000th of the distance from the equator to the north pole along a certain longitude line. The modern definition of the meter is based on the distance a certain wavelength of light travels in a perfect vacuum in a measured amount of time. That's (indirectly, through the meter) the modern definition of an inch, too. It just happens to be a different measured amount of time. See http://www.npl.co.uk/reference/faqs/on-what-basis-is-one-inch-exactly-equal-to-25.4-mm-has-the-imperial-inch-been-adjusted-to-give-this-exact-fit-and-if-so-when-(faq-length)
An inch is defined as exactly 2.54 centimeters. I don't know how much more based on SI units it could be. It's not really any different from how we define minutes, hours, days, and years. Those aren't all factors of 10, either.
Proper science is ALWAYS based upon SI units, not imperial units.
Interesting. I just learned tonight from reading /. that I have not been doing proper science this whole time. My notebook of organic reactions is full of measurements in minutes, hours, and days. In over a decade of organic chemistry research, measurements recorded in seconds account for under 1% of my time measurements. Indeed, my raw time data usually takes the form of hours and minutes from a clock. Quick... how many seconds into the day am I at the exact moment when the second hand reaches 12 o'clock (when I usually do something if I want high precision in my timing) at 15:47? Equally importantly, why should I care?
That's silly. We all know that heat rises. It's true that you want to cut a hole in the floor, but it's to get the cold air. (Don't worry... that heat engine will still work.) You need another hole in the ceiling for the heat to escape. Straddle the hole and hold your laptop right there, and you'll get the best cooling. If you don't believe me, just try it!
Left foot on clutch. Left side of right foot on brake pedal. Right side of right foot partial throttle. Let off clutch pedal far enough for the clutch to bite and transmit enough power to have the car straining forward just a bit. Roll right foot gradually off the brakes and onto the gas while continuing to let off the clutch. With just a little practice, you can pull this off with _zero_ backward rolling. You can do it quickly to get a fast start, or slowly to get a nice slow roll.
I think people who are sending their children to this school will be able to teach their children the necessary computer skills just fine without the help of the school.
I also have yet to meet a piece of paper that gives immediate feedback. However, I have met teachers who can give better targeted and more useful feedback than any computer program. Learning tools are great, but perhaps a bit more emphasis should be given to inspiring and training more good teachers.
But "tiny cuts would get infected, and spread," the reason that you're telling me that a high (absurd, but theoretical) dose of capsacin would lead to mass tissue death, is exactly the outcome the immune system fights against! That part wouldn't be affected at all by turning off nerve receptors. Nor would the clotting process. So how exactly does turning off a receptor in a nerve affect the body's ability to heal? Numbing a cut on the outside of the body certainly doesn't affect the body's ability to heal on the outside. The digestive tract is topologically on the outside, so I fail to see the difference. I'm not trying to be argumentative, but I'm genuinely curious since what you're telling me strikes me as being extremely counterintuitive.
If you took a high enough dose that it depleted those neurons in a certain part of your body, especially your insides, it would be similar to having leprosy. Tiny cuts would get infected, and spread, and eventually you would have mass tissue death.
Can you provide some refereed papers in support of this? It makes no sense to me since the immune system is not governed by the nervous system. No signal in the nervous system would mean no sensation, but it wouldn't mean that the immune system would stop responding to any effects. There are no nerves from the brain to the white blood cells.
Zero-G manufacturing of larger equipment, for instance, is something that can't be done on Earth.
Suppose you can build some large equipment in space with manufacturing advantages. (Never mind all the effort to set up such a manufacturing base.) How exactly would you get it back to earth where it's needed? It's not like you can just give that fancy gas turbine that you just built a slight retrograde nudge and let it fall back down to earth.
Oops... undoing bad moderation.
Infinity over infinity can be well defined. Consider that by your same argument, I could not tell you that half the whole numbers are even. After all, there's an infinite number of odd ones, and an infinite number of even ones. All that matters is that we can define rules to map exactly one even number onto each odd number. Therefore, we can prove that half the numbers are even despite the fact that there are an infinite number of both. We can also prove similarly that 1/3 of whole numbers are divisible by three even though the cardinality of those that are and those that aren't is the same.
Doing similarly with the lines in a 2D plane, we can define rules that map onto each line that doesn't intersect (y = b for your reference line y = 0) an infinite number of lines that do intersect (y = mx + b, same value b, unlimited selection of m). Therefore, the ratio between the two classes of lines (those that intersect and those that don't) is well known even though there are an infinite number of them, and the probability can be calculated to be 1.
I'm just an organic chemistry professor, so it's been a while since I've thought seriously about math. Some terminology may be a bit off, and the style may or may not be textbook perfect, but the general sketch of the proof is solid.
Having two screens in a laptop won't solve the problem that a laptop inherently has poor ergonomics. Sure, there's lots of screen real estate, but it's not ideally positioned. That, or the keyboard won't be ideally positioned. To me, this setup seems even worse, with no main screen right in front. Though if you insist on that much screen space in a portable package (4.5 kg isn't so bad compared to laptops from a decade ago), I guess this works.
Sounds like you want an external hard drive. Or a fast network connection.
Maybe I'm expecting too much, but that is a terrible search engine, just like most other airfare search engines on the internet. When I have a specific queries like "On which days is the fare cheapest between airport A and airport B in 2012?", or "graph out all 68808 combinations of departure and return dates in 2012 so that I can pick my travel dates visually" these online search engines are absolutely useless in answering them.
If you search far enough into the future, there generally will be a very large number of travel dates (often the majority) available at the lowest fare. If you're reasonably flexible with your plans, you can find the lowest fare easily. It is easy to find the lowest fare that is currently bookable between airport A and airport B in 2012. Your choice of dates will be somewhat limited since it's still early in 2011, and airlines generally don't make itineraries bookable more than 330 days in advance.
But what you probably really want is not just what the best fare is right now, but how to get the best fare if you have flexibility in both when to travel and when to book. It is impossible to know whether now is the best time to book that fare since fares and fare availability can change at any time in any direction. Airlines sometimes change fares multiple times in a day, and fare availability can change even faster. Furthermore, since these changes are in response to market conditions, even the airlines don't know when the lowest price will be.