It doesn't stop Google from collecting your information, though. They just don't serve you ads. Instead, they serve you to other corporations.
Thanks for moving the goal post. I never said anything about information collection as it's impossible for a micro-payment system to work and have anyone trust it without some sort of information exchange and logging.
Google Contributor (contributor.google.com) strives to come close by letting you pay a small amount for each ad it replaces. (Still in a limited invite-only preview and only white lists a few sites for now)
It is only too warm for water ice on the surface, where there is virtually no pressure, below the surface, there is enough pressure to keep it solid.
Although water-ice and dry-ice look very similar, they have very different properties, the dry ice at those pressures/temperatures would have almost immediately, while water-ice, which has an inherently low vapor-pressure at that temperature would have remained solid much longer.
Dry ice actually does form in that area for a good portion of the year, since the actual lifetime estimate for phoenix, of 90 days, is because that area will be completely covered in dry-ice during the winter. However, it is summer there now, and much warmer, pretty much all of the dry-ice should have already sublimated by now, even if recently uncovered.
Hopefully, the people at the univerisity of arizona have done one of the tests to determine which substance this is.
Since there is not a hazard with sodium being exposed to dry air, it is my suspicion that LN2 is safe to pour on the sodium.
To be honest though, I'd be more concerned about the oil this lab uses to keep the Na molten, since this is oil which is already at ~80C, and if water gets into the sphere, there would be flames and oil, not a good combination, I suppose that the important thing to remember is that very little oxygen exists inside these spheres, so once the water is used up, there will be very few flames on the surface.
Being a physics student at UMD, when I took a lab tour a few months ago, one of the most conspicuous aspects of the energy research building, is the pipes running overhead containing, I think halon gas, though I could be mistaken as to exactly what the gas is.
I had Prof. Lathrop for E&M this past fall, and he constantly joked about the fact that he has the fire suppression system, including his grad students, set up to call him immediately if there is a fire in any of his, I think, 4 labs.
Either way, the building is pretty safe, it's pretty much entirely constructed of concrete, though the wiring, and water pipes which run overhead can be sources of concern in some situations.
I can confirm though that the fire department, is well informed.
the hubble is solar powered, it does not use fuel. they don't need a shuttle to take it down, a robotic rocket attaches to the hubble, fires and takes it down so it can control its reentry, most likely bringing it down in the middle of the atlantic or pacific
fine, let me put it this way, centrifugal force is fiction, it doesn't exist, hence, one should use a more concrete, and real description, for example, the combination of angular momentum and centripital force will give the desired effect.
What if we relocated nuclear power plants to places similar to Yucca mountain. Underground powerplant locations would prevent terrorist attacks, and the sites being out of view would eliminate a lot of the fear that comes with the power plants.
I believe that every nuclear power plant in this country has a dome on top of it such that it can withstand a nuclear blast, terrorists aren't going to do shit to a nuclear power plant, no matter what they want to do. The answer is teaching all of the idiots who think that nuclear power is evil that there is nothing to fear. Not to mention the fact that we should invest in reusing our nuclear fuel. After those fuel rods are expended, there is plenty of fuel left in them, it just needs to be extracted, I remember seeing that a majority of that nuclear waste can be reused, that is what we need.
also, I completly agree with the idea of using renewable energy sources. wind, solar, and hydroelectric are all the most important forms of electricity generation out there, they should be used more.
In a computer analogy, assume you have a computer in which one process starts another. You can travel back in time, and you flip the bits to make the child program execute at an earlier time. It terminates the parent program before the program is called. The child program doesn't suddenly stop. The computer, being mechanistic, does not care that it no longer has a cause.
hate to tell you, but you changed the program already so that the child is already running, this analogy doesn't apply. the grandfather paradox has been contemplated for centuries, and no one has invalidated it so far, the only interpretation of current physics which eliminates thes paradoxes is the multi-universe interpretation, which says that every time a probabalistic event takes place that universe splits into a universe with each possible outcome, and also, if one goes back in time, they effectively enter another one of those universes. and therefore will not affect their own universe, preventing themselves from threatening their own existence.
sorry, but special relativity is an integral part of quantum mechanics, Dirac integrated it within a couple of years of it being proposed. Hence, Special Relativity does work. the problem is General Relativity. if you want to have a good reason for not making special relativity a law, its the fact that its only applicable to inertial reference frames. General Relativity is going to fail someday so that a quantum theory of gravity and acceleration can take over, ergo, we do not have a law of relativity, but theories, one which is true for all inertial frames, and one which is applicable to all classical frames of reference.
atmosphere: although it is very thin by that point there is probably still enough to cause drag, even if we are talking decimals
- Earth gravity: the Earth still has a gravitational effect even at that distance, so taking into account the pull down would reduce the forward vector of the satellites
- Moon or Sol gravity: pretty much anything large enough has a gravity that will effect objects close by.
I do believe that they factored in the earth's gravitational pull, considering that is what kept it in orbit, and what causes frame dragging.
additionally, the moon and Sol's gravity would most likely be the second two things to be factored in, and cause perturbations far greater than 6 feet.
and the atmosphere and a few other more minor effects are what the Gravity Probe B people are critical of. However, it seems that the orbit of LAGEOS II is at 5,782 kilometers, according to NASA Spacelink at that altitude, the amount of atmospheric drag is greatly overcome by many other effects such as the radiation of the sun, which pushes the satelite slightly, the same way some people have speculated for years that we could use that same solar radiation to travel to other planets, using a solar sail.
My guess is that they would have checked most of the sources of error which you listed before going to press.
No, this is different, Gravity Probe B is a separate project, this was an Italian research group who used freely avaliable data from the past 11 years of the two LAGEOS satelites, who's orbital paths have been monitored for that time. Space.com has a good summary, and so does New Scientist
they have used the hubble to take excellent pictures of the moon, however, the hubble, nor any telescope which has been built to date has the resolution to see the items left by apollo.
Although the infra-red on many telescopes could see a candle. which makes me wonder if they heated those items more, like the descent stage of the Lunar excursion Module, would they be able to see them?
the earth rotates too quickly to begin with, the hubble's minimum exposure time is 1/10th of a second, and hence the earth will have rotated a large distance in that time; in addition to hubble moving, since it orbits aproximately once every 100 minutes. also, it might be slightly too close to get good definition of its target
I'm still in highschool, but, I do believe that that is part of the rationale for continuing the life of the hubble, there are a few interresting wavelengths which can only be viewed from space.
cablevision's digital cable service has this channel too, they repeat after every show that it is part of the discovery channel, and hence has all their good programming.
Another problem I see with the youth today is that they tell themselves "Math is hard. Science is hard." If they keep telling themselves that, how would they ever watch a channel devoted to it? There's a horrible self-fulfilling prophecy at work. It doesn't help that the popular culture likes to impress onto kids that being bad in math or science is something to be proud of.
I concur completely, being in a public high school, i can't believe how many kids don't even think! they just go along witht he standard idea from their friends, and hence will not even try math or science. Not to mention what my physics teacher was telling us today about, how most elementary school teachers fear math/science too, hence, instilling this fear in many children throughout the country.
Sorry but America is not a continent, It is divided in North American and Central America by a significant mountain range, Central America and South America are seperate cause they want to be,
I believe that Central America is considered part of North America, because it lies on the same techtonic plate, and the reason why South America is separate is that they are on a separate techtonic plate. Same reason why Asia and Europe are separate from eachother, there is a mountain range between those two, however, last time I checked, there is no clear cut definition of central america. there are no mountains to go by, the closest i have ever seen is anything between Panama and Mexico. not exactly a continent.
just to note, the definition of a continent is a land mass which is roughly on one techtonic plate, and also rather large. this is why India is considered a sub-continent, it is on its own techtonic plate, and also is too small for anyone to want to call it its own continent.
Ok, I looked up how Pathfinder died, and it looks like the lifespan on the rover there was dictated by how many day/night temperature changes the electronics could take. I'm guessing that they just can't get a circuit board to put up with that, so everything else only has to last as long as a bit of solder that somebody's popping in and out of a freezer every 12 hours.
just so you know, the MERs (Mars Exploration Rovers) have plutonium heaters, the heat given off by the radioactive decay of the plutonium keeps the electronics at a relatively constant temperature, without drain on the electrical system.
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It doesn't stop Google from collecting your information, though. They just don't serve you ads. Instead, they serve you to other corporations.
Thanks for moving the goal post. I never said anything about information collection as it's impossible for a micro-payment system to work and have anyone trust it without some sort of information exchange and logging.
Google Contributor (contributor.google.com) strives to come close by letting you pay a small amount for each ad it replaces. (Still in a limited invite-only preview and only white lists a few sites for now)
It is only too warm for water ice on the surface, where there is virtually no pressure, below the surface, there is enough pressure to keep it solid. Although water-ice and dry-ice look very similar, they have very different properties, the dry ice at those pressures/temperatures would have almost immediately, while water-ice, which has an inherently low vapor-pressure at that temperature would have remained solid much longer. Dry ice actually does form in that area for a good portion of the year, since the actual lifetime estimate for phoenix, of 90 days, is because that area will be completely covered in dry-ice during the winter. However, it is summer there now, and much warmer, pretty much all of the dry-ice should have already sublimated by now, even if recently uncovered. Hopefully, the people at the univerisity of arizona have done one of the tests to determine which substance this is.
Since there is not a hazard with sodium being exposed to dry air, it is my suspicion that LN2 is safe to pour on the sodium. To be honest though, I'd be more concerned about the oil this lab uses to keep the Na molten, since this is oil which is already at ~80C, and if water gets into the sphere, there would be flames and oil, not a good combination, I suppose that the important thing to remember is that very little oxygen exists inside these spheres, so once the water is used up, there will be very few flames on the surface.
Being a physics student at UMD, when I took a lab tour a few months ago, one of the most conspicuous aspects of the energy research building, is the pipes running overhead containing, I think halon gas, though I could be mistaken as to exactly what the gas is. I had Prof. Lathrop for E&M this past fall, and he constantly joked about the fact that he has the fire suppression system, including his grad students, set up to call him immediately if there is a fire in any of his, I think, 4 labs. Either way, the building is pretty safe, it's pretty much entirely constructed of concrete, though the wiring, and water pipes which run overhead can be sources of concern in some situations. I can confirm though that the fire department, is well informed.
if i'm reading this correctly, it would be charged by the electric motor, as with other forms of hybrid cars.
the hubble is solar powered, it does not use fuel. they don't need a shuttle to take it down, a robotic rocket attaches to the hubble, fires and takes it down so it can control its reentry, most likely bringing it down in the middle of the atlantic or pacific
fine, let me put it this way, centrifugal force is fiction, it doesn't exist, hence, one should use a more concrete, and real description, for example, the combination of angular momentum and centripital force will give the desired effect.
it would be centripetal, not centrifugal force, but you are right.
also, I completly agree with the idea of using renewable energy sources. wind, solar, and hydroelectric are all the most important forms of electricity generation out there, they should be used more.
sorry, but special relativity is an integral part of quantum mechanics, Dirac integrated it within a couple of years of it being proposed. Hence, Special Relativity does work. the problem is General Relativity. if you want to have a good reason for not making special relativity a law, its the fact that its only applicable to inertial reference frames. General Relativity is going to fail someday so that a quantum theory of gravity and acceleration can take over, ergo, we do not have a law of relativity, but theories, one which is true for all inertial frames, and one which is applicable to all classical frames of reference.
additionally, the moon and Sol's gravity would most likely be the second two things to be factored in, and cause perturbations far greater than 6 feet.
and the atmosphere and a few other more minor effects are what the Gravity Probe B people are critical of. However, it seems that the orbit of LAGEOS II is at 5,782 kilometers, according to NASA Spacelink at that altitude, the amount of atmospheric drag is greatly overcome by many other effects such as the radiation of the sun, which pushes the satelite slightly, the same way some people have speculated for years that we could use that same solar radiation to travel to other planets, using a solar sail.
My guess is that they would have checked most of the sources of error which you listed before going to press.
No, this is different, Gravity Probe B is a separate project, this was an Italian research group who used freely avaliable data from the past 11 years of the two LAGEOS satelites, who's orbital paths have been monitored for that time. Space.com has a good summary, and so does New Scientist
they have used the hubble to take excellent pictures of the moon, however, the hubble, nor any telescope which has been built to date has the resolution to see the items left by apollo.
Although the infra-red on many telescopes could see a candle. which makes me wonder if they heated those items more, like the descent stage of the Lunar excursion Module, would they be able to see them?
the earth rotates too quickly to begin with, the hubble's minimum exposure time is 1/10th of a second, and hence the earth will have rotated a large distance in that time; in addition to hubble moving, since it orbits aproximately once every 100 minutes. also, it might be slightly too close to get good definition of its target
don't be a retard, its the air and space museum
I'm still in highschool, but, I do believe that that is part of the rationale for continuing the life of the hubble, there are a few interresting wavelengths which can only be viewed from space.
cablevision's digital cable service has this channel too, they repeat after every show that it is part of the discovery channel, and hence has all their good programming.
I believe that Central America is considered part of North America, because it lies on the same techtonic plate, and the reason why South America is separate is that they are on a separate techtonic plate. Same reason why Asia and Europe are separate from eachother, there is a mountain range between those two, however, last time I checked, there is no clear cut definition of central america. there are no mountains to go by, the closest i have ever seen is anything between Panama and Mexico. not exactly a continent.
just to note, the definition of a continent is a land mass which is roughly on one techtonic plate, and also rather large. this is why India is considered a sub-continent, it is on its own techtonic plate, and also is too small for anyone to want to call it its own continent.
just so you know, there are plutonium decay heaters in both of the MERs, which are designed to heat the internal components during the nights.
just so you know, the MERs (Mars Exploration Rovers) have plutonium heaters, the heat given off by the radioactive decay of the plutonium keeps the electronics at a relatively constant temperature, without drain on the electrical system.