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realistically sell to the combined economies of the planet, would probably last a thousand years or more. So in ten or thirty years we should redo the study, and see how that number has changed due to technological advances. At some point the curve of reasonable trip times will either get down to the order of the time between studies, or else it will flatten out when we hit the wall of feasible engineering. Or maybe there will be a huge breakthrough when somebody figures out how to create a wormhole to a nearby star, or something equally revolutionary. Anyhow, only when the trip time is getting down to the time between studies (which would depend on the rate of technology change) would it be sensible to start a serious program, with what NASA would call a "Phase A study", leading to a program start, then a
Preliminary Design Review, and then a Critical Design Review,... which is when you can start cutting metal.
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an energy density comparable to that of starlight. Finally there is the problem that at really high speeds, the light of the Sun would begin to be red shifted, so you lose power from that effect too. Some of these problems can be solved by beaming light or microwaves out to the ship, with a huge power station (a trillion watts, say) near the Earth, and a large aperture mirror to focus the beam on the ship. Then, as long as you can maintain the focal spot as small as the ship's sail, you could get constant acceleration. A calculation I did years ago (which I will not try to reproduce now...) suggested to me that speeds of maybe 0.1
1353:"Near the beginning of the Green Age a pyreen was born close to the Pristine Tower. The influence of the Tower on his body was extreme. Unlike other pyreen, he represented the worst features of the Rebirth races. Very deformed and ugly, he was, however, blessed with an incredible intellect. For millennia, he learned of the Will and the Way, traveled and spoke with the people of the Age. Despite his interactions with those around him, he could not accept himself as he was, and research into the past revealed to him that he was nothing more than a misshapen deformed accident."
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in minutes or hours, huge quantities of iron, etc., are converted into heavier elements. There are several different chain reaction sequences that occur at different rates. The observed abundances of the different elements agree with what one would expect from the rates of the different reactions, so this model is pretty solidly established. In particular, some isotopes can't be produced by any of the chain reactions. Those isotopes tend to be rare unless they are produced by some other process. There's an article on this at
941:. What I mean is in detail (if you can), about how the solar sail can make the jump to 1/10th light speed. It's in the last paragraph. I read something that said we could get it say to Alpha Centauri in 10 years, but it would have to be an extremely powerful laser/transmitter pushing the sail, and what about problems like micrometeroids punching holes in the sail and/or the appartus the sail comes out of? And, how do you slow down when you reach your destination?
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would see it as taking the full 2,000,000 years, or a little more. And if we could somehow stop and then return to Earth in the same way, over 4 million years would have elapsed by Earth clocks when we got home. So all our friends and family would be dead and gone, if the Earth even remained recognizable. Not a very satisfactory solution, but not impossible according to current understanding of physical law.
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years the Solar System will be ours, and we will have a far better idea of exactly what is out there in the dark between the stars, possibly mini-solar systems like
Jupiter & its moons. If such systems are common, we might find useful places to go only 1% as far as Alpha Centauri, which would change everything. And the human species would be safe at last from the many disasters which threaten us now.
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random. Someone looking at the other particle knows that your particle had the opposite spin to hers, but there is no way to send information since you can't control which spin your particle would have. If you change the spin of your particle, you break the connection between them. Also, measuring the particle breaks the connection, so you only get to do this trick once per particle.
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remain constant, but drops rapidly, making things very much worse. Once you get out to well beyond the orbit of Pluto, where the Sun begins to look like a very bright star, the photon drag of the light of other stars begins to become significant, as well as the cosmic background radiation, which has
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entry has gone through some major reverts, I'd like to talk about the reinstatement of the material. I've looked around and have seen that you've made some major contributions to the article and are interested in it's progress. I feel we need to talk about the reverts and reinstatement and talk about
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Yes, this is a pretty bizarre result. This effect was predicted years before anyone observed it, and the prediction was used in an argument that quantum mechanics couldn't be completely right (Einstein was one of the people making that argument). It turns out, though, that the effect is observed just
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Solar sailing is probably a competitive way of getting around the Solar System, though I think nuclear-electric ion drives are likely to prove better. The latter can certainly take us all over the Solar System in the time scales of the great explorations of the 15th and 16th centuries. Then in 500
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You are right that infrared is not "heat". This is a common misperception, and one that is even sometimes spread by high school science teachers. Any electromagnetic radiation will warm a surface that absorbs it. Heated objects give off infrared radiation, but they can also give off visible light or
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of several important assumptions of physics is wrong, but we aren't sure yet which one it is. It is usually assumed that the incorrect assumption is "hidden variables", the idea that we could in principle come up with a better theory than quantum mechanics, which has additional variables to describe
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a while ago. There is a maximum above which it may not be appropriate to keep calling it "sound". A sound wave consists of a moving pattern of more and less dense regions of air. The more intense the sound wave, the greater the pressure extremes. For a sufficiently intense sound wave, the less dense
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So, you're saying you CAN'T lose weight and become non-obese/a healthy weight again? You are extremely picky, I can understand if I put something new that was totally unsourced, like I did once for tantric meditation, but this is common knowledge for crying out loud! You really want me to reference
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in supernovas. As I recall, the supernova produces an extremely intense wave of neutron bombardment. The neutrons are absorbed by heavy elements, which then beta decay into higher elements on the periodic table. These then absorb neutrons and the process repeats. You get a big chain reaction where,
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If you have a laser that produces a 1 watt beam, the power is the same regardless of whether the beam is IR or UV. The laser that burns the best is the one that is absorbed the best in the target. Some materials absorb IR better, others absorb UV better. Note, though, that it's generally easier to
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I don't understand, why can't I post the Q aren't omnipotent if they're aren't omnipotent, it's a fact, which is revealed in the episodes, why should I put it on the talk page? if it's true, it's true, and it is The proof it's not vandalism it is in the episodes.I've never had a problem posting a
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edit. Perhaps "POV" was a little bit incorrect - while it's probably not wrong to say that they were inspired by the T-1000, it's definitely speculation - and your personal point of view - on the topic, to claim they were "perhaps inspired". Either they were, or they weren't - however, we don't
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to those of rotating objects. Initially, it was thought that electrons, etc. were like little billiard balls that could be spinning. It was later understood that this is not the case, but the name stuck. Different particles have different spin states that they are allowed to have. For example, an
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I also heard there's no limit to the brightness of light or the loudness of sound (though I had previously heard otherwise that a sonic boom is loudest audible phenomenon that could happen) in the latter case would it be quite literally possible to make a sound in the air so loud that whole world
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So, in a certain sense, we would seem to have traveled much faster than light: something like 2,000,000/29 light years per year, or almost 70,000 times the speed of light. Relativity permits this, and it is because time is not as we conventionally think. The observers "at rest", back on Earth,
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Sorry I have been inattentive to
Knowledge for a month or two, due to other responsibilities, which may increase or diminish in unpredictable ways. I am watching your talk page still, but hardly check my own watchlist even once a week these days. So drop me a note on my talk page if something
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don't know which is which until they are measured (this can be proven, and has been). At the moment one of the particles' spins is measured, the other particle will "instantly" have the opposite spin, no matter how far away it is. But you can't force the particle to have the spin you want. It's
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There's also Von
Neumann Probes. I saw a documentary of the Science Channel (formerly discovery science) about how Jupiter's Magnetic Field could be used to accelerate them, then fling them off in the direction of their destinations. But, would the probe gain speed with every revolution around
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Just a coincidence. When I welcomed you to
Knowledge months ago I Watchlisted your talk page, in case you had any questions. This automatically Watches the user page as well. I'm not sure why your page never got removed from my list. I normally unWatch new user's pages after a few days or a
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What I personally think we need to do is work the problem modestly hard from an engineering standpoint, considering all approaches, producing realistic design mission studies that give us the best trade-off solution with current technology. Right now the trip time, for a program we could
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is a useful speed, and you might split the problem between a beamed laser sailer, with a fusion rocket to stop, but the trillion watt figure I remember was for a fairly small ship, 100 or 1000 tons if I recall, and I think a nuclear-electric ship capable of reaching even a few percent of
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is now open until 23.59 on Sunday, 10 December. All users who registered an account before
Saturday, 28 October 2017, made at least 150 mainspace edits before Wednesday, 1 November 2017 and are not currently blocked are eligible to vote. Users with alternate accounts may only vote once.
597:, the fact that bad articles, or content, exist is not a compelling reason to add more. If you can't find a source that says it was "inspired" by as much, then don't add it. In fact, I'm deleting all of the "trivia" ones which are either not references, or not blatantly obvious. --
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is now open until 23.59 on Sunday, 3 December. All users who registered an account before Sunday, 28 October 2018, made at least 150 mainspace edits before
Thursday, 1 November 2018 and are not currently blocked are eligible to vote. Users with alternate accounts may only vote once.
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Anyway, I was just wondering perhaps, how many candelas it would take to blind you, either temporarily or permanently, and what exactly happens, the rods and cones just are stunned by the huge input of light, or just plain destroyed and cease to function if they are overloaded.
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believes that the term "Android" should apply to all of the incarnations of the Model 101, from
Endoskeleton all the way up to the gestalts of flesh-and-blood and the combat chassis played by Arnold in the movies. He furthermore believes that the term "cyborg" does not apply to
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Again, I respectfully ask you to come back to the "Terminator" Article and lend your input; those of us who are there in the
Article's discussion page are engaging in a lot of back-and-forth regarding the different terms and the disagreements as to when they should be used.
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Hi again -- I really think the solar sail people are a bit optimistic about its use for interstellar travel. The reason is just that as the acceleration is slow, you have to wait a long time, and travel a long way, to reach high speed. At a uniform acceleration
202:. The pressure can't get lower than that. A wave this intense would distort greatly as it travelled, since the increases and decreases in pressure can't be uniform. More intense "sound waves" do travel, though, and have properties distinct from ordinary sound.
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is open from Monday, 00:00, 21 November through Sunday, 23:59, 4 December to all unblocked users who have registered an account before
Wednesday, 00:00, 28 October 2016 and have made at least 150 mainspace edits before Sunday, 00:00, 1 November 2016.
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The snare-Yeah, sorry, just thought perhaps it would be more simple, I'm not a scientist, just sometimes a lot of articles are hard to understand if they aren't written plain English. But I guess your right, a lot of things require pre-requistites,
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Philosophical zombies are not undead; they are defined as looking and acting just like regular people. Despite this, they are somehow supposed to lack consciousness. Don't ask me to defend it; I'm just telling you what supporters says.
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is going to be much larger than that for a payload of 100 or 1000 tons. I cannot imagine a decade ship smaller than an aircraft carrier, so it sounds like a pretty tough way to go, though possibly competitive with other approaches.
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Hi! Just so you know, uBlock Origin, in my experience, when the Adblock Warning Removal List and the Anti-Adblock Killer are enabled, works very well at removing adverts without Web sites interfering with it. I hope this helps!
910:) would be ~70,000, which means the mass ratio would be a staggeringly large number, something with over 30,000 digits, we can hardly even write it down. There is not enough fuel in the galaxy to tank up such a ship.
1307:. It has the authority to enact binding solutions for disputes between editors, primarily related to serious behavioural issues that the community has been unable to resolve. This includes the ability to impose
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spin states. We call these (arbitrarily) "up" and "down". It's not clear what exactly this means physically, but there are various ways to measure the spin of a particle or "flip" it from one spin to another.
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What about the thing on in a sonic game someone using a shapeshift ability like the T-1000 wouldn't that be speculuation too? The T-1000 and changelings are almost identical, both liquid that can change thier
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If it could be built, to observers left behind "at rest", it would appear to be moving at very close to the speed of light within the first few years of acceleration, with the ship clocks enormously slowed.
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ITALY WAS COMPRISED OF SEPERATE CITY STATES BEFORE THE UNIFICATION IN 1861 ! IT WAS NOT AN OFFICIAL COUNTRY BEFORE THEN. DEAL WITH IT! LET ME GUESS, YOUR AN IATALIAN-AMERICAN WHO THINKS COLUMBUS WAS ITALIAN.
800:, would have passed, even though it would take a bit over 2 million years by Earth clocks, or other clocks at rest with respect to the stars and nearby galaxies. (Note that we cannot say either clocks are
227:, which cannot be increased by any optics. If you imagine a "beam" of light, it has a certain diameter but it also spreads out as it travels. Luminance takes both of these things into account. If you use a
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I wondered if it would take less negative (and he doesn't explain how we could use the Casimir effect to create the bubble) energy to propel, say a nanobot, rather than needing a jupiter sized bubble.
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the whole world, so yes I'm pretty sure it's possible in principle to make a "sound" so loud that the whole world could hear it. The amount of energy required would be enormous, though. The listing at
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For light, there is no maximum other than the limits of your source. There is a limit, though, to how much you can concentrate the light from any given source. Light from a given source has a certain
1764:. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose
1691:. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose
1394:. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose
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something like that?? You want me to reference that simply LOSING weight is possible?? I could have tons of references for this one and not just from scientific journals, probably TOO many to list.
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My mistake—I did a text search of the article but did not look at the images. I'll add the info back into the article and look for a source identifying him as hedonistic. Sorry for the conflict,
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And finally, when the Model 101 is equipped as a Type/Series 800/850, the endoskeleton with the living flesh-and-blood covering, I believe that the most correct term for the creatre is "cyborg."
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As I think about the above, I am worried about arithmetical errors, as I am in a great hurry tonight. You might want to check it over carefully before taking it too seriously. :) Sorry...
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That is to say, I believe that the "Base" Model 101, just the endoskeleton with no cosmetic enhancements, is best defined as either a Humanoid Robot, Anthropomorphic Robot, or simply a Robot.
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here, because we are really not supposed to put tutorials into the talk pages. If you have questions in the next few days, you can reply here (I will watch for a while) or on my talk page.
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Jupiter's (I would guess) North Pole, so you could eventually get it near the speed of light? You'll need a hulu account to view this, it's free (I was trying to find it on youtube, sorry)
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Actually, I don't even know if they are correct or not. I just like hearing the concepts idea's behind them. I never even had Calculus. Though, I plan probably to study it in the future.
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I am looking for help improving the dermatology content on wikipedia. Would you be willing to help, or do you have any friends interested in derm that would be interested in helping?
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know, and there isn't any citation or evidence that they were. I wish there were more templates that fit better, but I think you understand my reasoning. Anyways, I didn't mean to
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When the Model 101 is outfitted as a Type/Series 600, the endoskeleton covered by rubber skin, I believe that the Terminator is then most correctly classified as an "android."
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Now that the warnings are out of the way: If you have proof, why not post it on the article's talk page? That's what the talk page is for. :) Post something like "I posted
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is the empty mass of the ship after the fuel is all used up) is for non-relativistic velocities, but because the rocket is always moving moving slowly (at rest, in fact)
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Hello. Thanks for the edits on Dark Sun. As for the citation on Rajaat's birth being too close to the Pristine Tower being the cause of his deformity I pulled that from
329:, that says that particles can't transmit effects from one to another at faster than the speed of light. It's not actually clear which of these assumptions is wrong.--
286:(and other quantum mechanics of subatomic particles) is not really a physical rotation. It is an intrinsic property of many particles that has mathematical properties
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I ended up removing it anyway as it comes from 3rd ed stuff. I've been working to reduce the content of that section to more of a summary to avoid excessive detail.
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If your submission has already been deleted by the time you get there, and you wish to retrieve it, you can request its undeletion by following the instructions at
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P.S.: To change the enabled filter lists, click the uBlock Origin icon, then click the gear icon in the upper left corner, then click the "3rd-party filters" tab.
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the spin. You create two particles from one in such a way that one has spin "up" and the other has spin "down", but you don't know which is which and in fact the
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I think we'll probably get to the stars eventually, even if we go real slow. It seems generational ships are the most realistic, though we can't build one yet.
686:-myself -thinks that the Terminator is worthy of multiple appelations depending on which configuration (read: Type/Series) the Model 101 is configured as.
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the particles that are "hidden" from us under quantum mechanics. This is felt to be more palatable than the best-known alternative: giving up the idea of
1597:, the draft has been nominated for deletion. If you plan on working on it further, or editing it to address the issues raised if it was declined, simply
883:, it does give the speed that the ship's occupants might think they were going if they had an accelerometer on board, and just estimated their speed as
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Hello, and thank you for your contributions to Knowledge. This is just a note to let you know that I've moved the draft that you were working on to
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Then why is it I heard that wavelengths are smaller have higher power, like how X-rays and gamma rays have a lot more energy than radio waves?
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279:, but it doesn't look very good and I see some things there that may not be factually correct. (I'm not an expert on this area of physics.)
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If you have any thoughts about how any of this material could be usefully incorporated into the article, we can discuss it further there.
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While there is no maximum intensity for light in general, there is a maximum intensity for light in air. A sufficiently intense beam will
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to Knowledge! Thank you for your contributions. I hope you like the place and decide to stay. Here are a few good links for newcomers:
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of light that would determine whether a source is "bright" enough to blind someone. This confusion of units is exactly why the term "
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Well, the amount of light it would take to blind you would probably be measured either in cd/m or in W·sr·m, since it's probably the
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In accordance with our policy that Knowledge is not for the indefinite hosting of material deemed unsuitable for the encyclopedia
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submissions. Please feel free to continue to work on it there. If you have any questions about this, you are welcome to ask me on
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and myself in a discussion of which terms should apply to the Cyberdyne Systems Model 101 Infiltration Unit in its various forms.
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of the light is also a factor. You can be blinded by a relatively low-power laser, because the laser's beam can be focused by the
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is another good place to learn about editing the encyclopedia. If you have any questions, please feel free to drop me a note.
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Secondly, I understand your point, but userpages are about users, not for commenting. Talk pages were created for this purpose.
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make lasers at longer wavelengths. It's a lot easier to make a high power infrared laser than a high power ultraviolet one.--
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Back to Bell's inequality: it isn't possible (we think) to send information instantly using this property, because you don't
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on talk pages using four tildes (~~~~); this will automatically produce your name and the date. If you need help, check out
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399:. I was reverted because it looked like vandalism. The proof it is not vandalism is .". Make sense? I thought it did. —
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describes the Committee's roles and responsibilities in greater detail. If you wish to participate, you are welcome to
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Re. travel to Andromeda Galaxy in 29 years. I think you basically understand the situation, in that 29 years of time,
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Another user left the comment below on your user page (I guess by mistake). I've moved it here, and refactored it per
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impossibility, simply because we know no practically conceivable way to build a ship that could accelerate at one 1
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gives examples of some things that are louder than a sonic boom. Note that your eardrums rupture at around 195
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could conceivably be reached in this manner (which is very exciting) — but then, somehow, you have to stop.
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100 km, with a 1 um λ. NB the mirror needs to be optically perfect to << λ, but the sail does not.)
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Well, good luck! I learned much of my calculus when I was a kid, pondering the mathematical appendix to
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walks you through editing step by step. A list of resources to help edit health content can be found
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Well thanks, and it's says your a physicist, are you professor, or just work doing research, etc?
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on your talk page and someone will show up shortly to answer your questions. Again, welcome! --
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in Newtonian approximation, which is applicable at the speeds we could hope to reach. Then
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There's actually already a non-draft article on her, so you can go ahead and delete that.
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I wasn't signed in, my username is the snare, what article wasn't I neutral about?
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SORRY, YOU ARE WRONG! HE WAS CATALAN, AND ONE DAY THIS WILL BE COMMON KNOWLEDEGE.
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are an example of this. In principle, one could imagine a shock wave that would
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about the structure and content of medicine-related encyclopedia articles. The
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http://science.discovery.com/videos/sci-fi-science-ii-approach-light-speed.html
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Anyway, since you're here I wondered if you could explain this from this URL:
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I wasn't vandalizing, there's a lot of evidence that the Q aren't omnipotent.
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the beam to a small spot, it spreads out faster after it passes that focus.
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If you could help or add your two cents I'd really appreciate it. Thanks--
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describes the Committee's roles and responsibilities in greater detail.
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describes the Committee's roles and responsibilities in greater detail.
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Hello, The snare. It has been over six months since you last edited the
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describes the Committee's roles and responsibilities in greater detail.
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Fusion only works up to iron. The elements heavier than iron are formed
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is the panel of editors responsible for conducting the Knowledge
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Remember that when adding content about health, please only use
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is the speed achieved according to Newtonian physics, ln is the
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Join us in the "Terminator" Article discussion page...please...
498:. I will be dropping him a note about Knowledge's rule against
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For more information on using images, see the following pages:
218:, and that a shock wave of around 200 dB can kill you outright.
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is small. But since the intensity of sunlight decreases like
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I recall a discussion of the maximum loudness of sound at
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even UV and higher frequencies by the same mechanism (
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FACT to a wikipedia, especially if it's true, sheesh
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of 0.5 light years, 10/2 cm, which makes the mirror
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If you are still a member of Knowledge, please join
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895:. Even if the exhaust velocity were
176:(or mixture of wavelengths) present.
7:
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602:04:29, 21 January 2007 (UTC)
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85:05:31, 23 April 2006 (UTC)
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89:I reversed your edit to
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21:Hello, The snare, and
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1580:Articles for Creation
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1147:Interplanetary Flight
961:, you reach velocity
881:in its own rest frame
451:Thanks for uploading
244:the air, producing a
1564:Your draft article,
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1030:, the ship sail dia
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782:Insterstellar travel
717:Talk:Kardashev scale
93:, because the term "
1600:edit the submission
1586:page you started, "
1305:arbitration process
1048:and acceleration 10
1002:gets very large if
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624:blackbody radiation
490:Comment on columbus
377:Please remember to
374:Alright, first off:
70:Knowledge:Questions
1774:arbitration policy
1701:arbitration policy
1576:
1514:. We also provide
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1404:arbitration policy
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806:absolutely at rest
444:Image Tagging for
107:luminous emittance
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35:How to edit a page
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1342:Dark Sun Citation
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1786:voting page
1713:voting page
1445:Good luck!
1250:Draft moved
1096:Best, Bill
786:Hi Snare,
204:Shock waves
76:, or place
1770:topic bans
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1606:{{db-afc}}
1588:Anna Lunoe
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1277:Sam Sailor
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667:TomTheHand
595:WP:POKEMON
383:talk pages
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1004:a
1000:s
996:v
980:)
967:s
963:v
959:a
945:(
924:(
907:0
903:1
901:M
897:c
893:t
876:0
874:M
869:1
867:M
862:e
860:v
858:,
852:v
844:0
840:1
838:M
833:e
821:g
744:(
723:(
643:(
422:m
360:(
146:(
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