Yes, but I guess this method would only be used if the message not being intercepted was more important than the message getting there. I imagine the cable would be fairly secure anyway - guards at access points, steel conduit around it, etc.
No, it works because there being only one photon an interceptor can't both read it and let it through unchanged. Just stopping the transmission if you didn't get a bit wouldn't be reliable enough - some bits might not arrive for legitimage reasons, and someone intercepting might be able to resend the photon faster than the margin of error in the timing system.
Yes, that is exactly what they do. However not the whole bitstream is used, because some of it is read wrong due to quantum effects - the same ones that stop you being able to intercept it flawlessly.
It's more complicated than that. The act of observing the photon changes it, so you can't always read it accurately. The method of communication involves checking if you read all the bits correctly afterwards and discarding any you didn't - if you've been reading them in the middle they'll think they read it correctly, but will still have the wrong bit so will get nonsense out when they send a message (probably a simple test message that won't tell you anything useful) and they won't send the real message until they've got rid of you.
Yes, they do. The expats are rich, but the locals are often very poor by western standards (I doubt many are particularly poor by asian standards, but that's really relevant)
If memory serves that moon creation theory has a mar-sized asteroid hitting the *still semi-molten* Earth... I don't see life evolving on molten rock... not in any form that could develop what we call civilisation, anyway...
The grandparent said DNA didn't do it intentionally. Just because he doesn't write jokes in base 13 doesn't mean he disapproves of fans coming up with an explanation...
Conduction and radiation... depending on how much of you is in contact with the surface, and how insulated you are (probably just your feet with thick rubber soles most of the time) radiation is probably more significant.
That review says it's based on a test screening, Simo's review says a lot of the things that were missing were in the tests. So they could well both be right - their just talking about different versions of the movie... unfortunately the one we get to see if the bad one...
Ah, here's the book. Page 140 of my version, Tom says "Run naked on the grass, while Tom goes a-hunting". It says they did run around... doesn't mention if they run naked... (they were "clad in white" before...)
I had the same problem - it looks like a great program, but I never got to use it because my computer barely responded to anything after it started trying to load...
Good point... in theory the strong force could do it - as it does the nucleous of an atom - but it's unlikely to be able to get the charge density high enough to make a "black hole" (not that photons are charged, so light would still be able to get out, so it wouldn't be black)
In newtonian physics that would be true, in relativity it's not. I'm not entirely sure why not - I'm not an expert on relativity - but I know it's to do with relativistic effects.
I suppose you could think of it in terms of time dilation - at the event horizon time doesn't flow at all, so although, from your point of you, you could gradually escape, from a external observer's point of view it would take you an infinitely long time to do so.
He says that electron-positron anihilation could account for the radiation observed at the center of the galaxy. The radiation produced when an electron collides with a positron is of a very specific wavelength - I think someone would have noticed if the radiation at the centre of the galaxy was at that wavelength, rather than a distribution of wavelengths in the way you would expect from a very hot object (superheated plasma in this case).
No. The event horizon is the distance at which the escape velocity is the speed of light - you can't travel at the speed of light, so it's impossible to escape. (That's something of a simplification, but it will do)
I suppose you could have an electric version of a black hole (not magnetic though, it would have to be a magnetic monopole [magnet with only one pole, rather than the usual north and south poles] which are thought not to exist). An object with sufficent charge that no charge object could escape it. Neutral opjects would still be able to leave, of course, and the event horizon would be different depending on the charge of the object trying to leave...
"Filter for valid patents"? Since when has the patent office had anything to do with validity? You give them the information, you give them money, they give you a patent. The information is optional.
Of course, you wouldn't get anywhere... you'd have paid large amounts of money to get a large number of patents that virtually no-one is ever going to want to license or use without a license... I guess if only a few turn out to be useful you could get your money back, but it's quite a risk.
A white dwarf isn't a collapsed star - well, yes it is, but not in the sense that it's too small to have enough fusion to keep it's size. It's a star that no longer has enough fusion because it's all been turned into carbon. A white dwarf is pretty much solid carbon - there's no way a young star can turn into a white dwarf by gravitational collapse.
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Yes, but I guess this method would only be used if the message not being intercepted was more important than the message getting there. I imagine the cable would be fairly secure anyway - guards at access points, steel conduit around it, etc.
No, it works because there being only one photon an interceptor can't both read it and let it through unchanged. Just stopping the transmission if you didn't get a bit wouldn't be reliable enough - some bits might not arrive for legitimage reasons, and someone intercepting might be able to resend the photon faster than the margin of error in the timing system.
Yes, that is exactly what they do. However not the whole bitstream is used, because some of it is read wrong due to quantum effects - the same ones that stop you being able to intercept it flawlessly.
It's more complicated than that. The act of observing the photon changes it, so you can't always read it accurately. The method of communication involves checking if you read all the bits correctly afterwards and discarding any you didn't - if you've been reading them in the middle they'll think they read it correctly, but will still have the wrong bit so will get nonsense out when they send a message (probably a simple test message that won't tell you anything useful) and they won't send the real message until they've got rid of you.
I British - I certainly wouldn't mean USA when I say western.
The GDP may be higher, but it's much less evenly distributed.
Yes, they do. The expats are rich, but the locals are often very poor by western standards (I doubt many are particularly poor by asian standards, but that's really relevant)
If memory serves that moon creation theory has a mar-sized asteroid hitting the *still semi-molten* Earth... I don't see life evolving on molten rock... not in any form that could develop what we call civilisation, anyway...
The grandparent said DNA didn't do it intentionally. Just because he doesn't write jokes in base 13 doesn't mean he disapproves of fans coming up with an explanation...
Conduction and radiation... depending on how much of you is in contact with the surface, and how insulated you are (probably just your feet with thick rubber soles most of the time) radiation is probably more significant.
That doesn't derserve a response, so I'll just go with "Huh?".
That review says it's based on a test screening, Simo's review says a lot of the things that were missing were in the tests. So they could well both be right - their just talking about different versions of the movie... unfortunately the one we get to see if the bad one...
This sentence does not parse.
Yes, it does. The sentence before it didn't parse, though. I think you meant "that". Try to be correct when correcting people.
I haven't checked, but I think he's right...
Ah, here's the book. Page 140 of my version, Tom says "Run naked on the grass, while Tom goes a-hunting". It says they did run around... doesn't mention if they run naked... (they were "clad in white" before...)
That's be iHop... Apple have never been one to miss an opertunity...
I had the same problem - it looks like a great program, but I never got to use it because my computer barely responded to anything after it started trying to load...
True, that would be hawking radiation, wouldn't it? It's in very small amounts for a supermassive black hole though...
Good point... in theory the strong force could do it - as it does the nucleous of an atom - but it's unlikely to be able to get the charge density high enough to make a "black hole" (not that photons are charged, so light would still be able to get out, so it wouldn't be black)
True, it could be, but I would still expect a spike at the anihilation wavelength - not all of it is going to be absorbed before it gets here.
Are you sure you did the maths right? How do you account for the rotation being faster than the observed mass would imply?
In newtonian physics that would be true, in relativity it's not. I'm not entirely sure why not - I'm not an expert on relativity - but I know it's to do with relativistic effects. I suppose you could think of it in terms of time dilation - at the event horizon time doesn't flow at all, so although, from your point of you, you could gradually escape, from a external observer's point of view it would take you an infinitely long time to do so.
He says that electron-positron anihilation could account for the radiation observed at the center of the galaxy. The radiation produced when an electron collides with a positron is of a very specific wavelength - I think someone would have noticed if the radiation at the centre of the galaxy was at that wavelength, rather than a distribution of wavelengths in the way you would expect from a very hot object (superheated plasma in this case).
No. The event horizon is the distance at which the escape velocity is the speed of light - you can't travel at the speed of light, so it's impossible to escape. (That's something of a simplification, but it will do) I suppose you could have an electric version of a black hole (not magnetic though, it would have to be a magnetic monopole [magnet with only one pole, rather than the usual north and south poles] which are thought not to exist). An object with sufficent charge that no charge object could escape it. Neutral opjects would still be able to leave, of course, and the event horizon would be different depending on the charge of the object trying to leave...
"Filter for valid patents"? Since when has the patent office had anything to do with validity? You give them the information, you give them money, they give you a patent. The information is optional. Of course, you wouldn't get anywhere... you'd have paid large amounts of money to get a large number of patents that virtually no-one is ever going to want to license or use without a license... I guess if only a few turn out to be useful you could get your money back, but it's quite a risk.
Wow... you really are american, aren't you? Your regime can change just as much as anyone elses... stop being so arrogant and open your eyes.
A white dwarf isn't a collapsed star - well, yes it is, but not in the sense that it's too small to have enough fusion to keep it's size. It's a star that no longer has enough fusion because it's all been turned into carbon. A white dwarf is pretty much solid carbon - there's no way a young star can turn into a white dwarf by gravitational collapse.