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You do know that 3G is used for virtually ALL mobile phones around the world, don't you (the US is an exception)?
Hence, the answer to your question would be just about every company where the employees use mobile phones.
No, they do not exist. Because there are an infinite number of possible solutions.
There are however books/databases with numerical sequences. A well known example is the "Sloane"
http://www.research.att.com/~njas/sequences/
It varies. Sometimes we quite litteraly fabricate single chips and they are either 5x5mm2 or 2.5x2.5xmm2; usually because we are using an expensive or rare substrates (say a good batch of GaAs with embedded 2DEG).
The masks are either 3" or 4", this tends to be the standard size for manual...
I don't know for sure how it is done in industry. But I would assume that at least some steps include straightforward photo-lithography (for patterning pads etc) which at least in principle can be done over a whole wafer at once.
Also, you don't HAVE to use the whole mask. When I design masks...
While it is of course correct that there is no such thing as a "jewish race" or even genetic link between all jews the above is indeed largely true.
A good example is Russia where "Jewish" IS in fact considered to be a nationality, if you look in a passports that belongs to a Russian Jew it...
Yes, as far as a I remember Newton prefered to use momentum throughout his work.
This means that he instead of writing F=ma he prefered to use F=dp/dt=mdv/dt
You can easilty derive the expression Born2wire mentioned if you just conservation of energy (and he is right about the sqrt(2))
An...
Someone (I don't remember the name) came up with an analytical solution to the 3-body problem about 10 years ago. However, the solution is in the form of a very complicated series so it is useless for practical calculations.
Also, remember that being able to solve an equation analytically...
Both me and Born2Wire are active at www.physicsforums.com which has a very active sub-forum for number theory.
As far as I can tell (again, not my field) some of the people active in that forum know a LOT about primes so they should be able to give you some good feedback if that is what you are...
This is definitly not my area (I am a physicist) but -assuming that your proof is correct (btw, there is something wrong with your link)- have you verified that you simply haven't "re-invented" something that is already known?
Rember that people have been working on this for well over 2000...
What he was found guilty of is irrelevant. He was serving a life sentence in Scotland. Due process in Scotland is that if someone has terminal cancer (or something similar) that person is let out of prison a few months before he/she dies. They might make an exception if there is a risk to the...
The whole point of sending an ex-president is that he can NOT negotiate on behalf of the US. Clinton was merely visiting NK and had a friendly chat with their leader, the leader in question then decided to release the prisoners.
I agree that it is a bit silly but these things happens all the...
Eh?
You DO realize that the state is raising a lot of children, don't you?
There are over 500 000 kids in foster care in the US.
The main problem here in the UK is that social services tend to wait far too long before children are separated from abusive parents and -as a number of recent...
No, that is not quite how it works. I haven't read the article the OP linked to but it is well known that a "clean coal" plant will be less efficient than a conventional plant (although 30% sound hight; I've heard numbers around 25%). The reason is simply that the sequestration uses quite a bit...
Indeed, but while doing so it is also losing POTENTIAL energy (reemmber that the sum of potential+kinetic energy is constant); and since you need to raise the ball to the same height again in order to be able to repeat the cycle there is no net gain of energy than can compensate for the energy...
No, of course they can't "compensate" for it. Friction means that the system is losing energy meaning you have to add energy from OUTSIDE the system in order to keep it running, i.e. it is not a PM.
Neither gravity nor magnetism can create energy; just store it.
The "threshold" is that a christian countries have christianity as an official religion; i.e. there is a state church (a church endorsed by the state that often have a priviliged postion compared to other churches, e.g. the right to collect tax).
E.g the offical religion of England is...
No, that is NOT the reason why we cannot reach absolute zero; read my replies above.
Again, even if we COULD reach 0K particles would still move (albeit very slowly).
Note that the "equivalence" between motion and temperature to some extent breaks down when you go to low temperatures; we...
The fact that OK is not the same thing as "nothing moves" has -as far as I know- nothing to do with the Casimir force or even the vacuum.
You do not even need QED; it is just a result "ordinary" statistical physics.
I am reasonably sure you can find a discussion of this in Gardiner's book...
Why would it disappear:confused:
There is nothing "special" about absolute zero in this respect, remember that we use models where we assume the temperature to be zero all the time (just to simplify the equations).
The reason you can't reach absolute zero is more or less the same reason...
Maybe I am missing something here, but why EXACTLY do you find this to be controversial?
I can understand fears about data security etc (especially in the UK, the authories here do not exactly have a good track record when it comes to keeping data safe).
However, from what I can from some...
It very well might have the shape of a sphere, but a HYPERsphere; i.e a sphere in four dimensions.
Remember that a hypersphere is to a sphere what an sphere is to a circle; i.e. the same basic "shape" but in +1 dimension.
It is this extra dimension that might mean that one could end up a the...
They use the spectrum of the incoming light. We know -from experiments in the lab- what frequencies there should be lines from e.g. helium and hydrogen so these form a "fingerprint" to which you can compare the light from the stars.
Note that you shouldn't take the use of the words "red" and...
This idea -or variations of it- has been around for a long time, see e.g. "Altered Carbon" by Richard Morgan.
That argument doesn't quite work. We know we can -at least in principle- use computers to simulate any physical system, and since the brain is (as far as we know) a physical system...
For me it is actually easier to understand/speak Austrian than most of the German dialects you hear in Germany (rural Bavarian is nearly impossible; although I can usually get by if I am in e.g. Munich), but that is mainly because I am Swedish and most of the sounds used Austrian prononuciation...
Actually, Austrian is a language. It is obviously a type of German, but it is quite distinct from the kind of German spoken in most of Germany (it is easy to tell is someone is from Austria, the rolling "r" is a a dead giveaway). It is a bit like the difference between American and British...
The "story" comes from News of the World, which is the worst of the British tabloids (an achievement in itself).
http://www.newsoftheworld.co.uk/
One of their reportes POSED as a sheik (something they've done before to get other "stories"), i.e the story had nothing to do with SA or any...
The audio-out from your laptop is probably a line-out output; it is not meant to drive a speaker directly (headphones are a bit different since they have much higher impedance than a speaker and do not require much power).
It could be that you are basically shorting the output which would...
No, the properties of the speaker certainly changes. It is important to understand WHY the element is mounted in a box: namely that the air in the box essentially acts as a "spring", i.e. it "resists" the motion of the cone as it moves backwards (since there is nowhere for the air to go in a...
The maximum SPL ("volume") of a system depends on two things: The sensitivity of the speakers (usually rated in in dB/W at a distance of 1m) and how much power the amplifier can deliver.
The only thing that limits the SPL from the speaker is how much power it can handle before things start to...
Indeed, and if you ever see someone who doesn't use a teleprompter/paper you can be sure that the person in question has spent a LOT of time rehearsing his/her speech.
I sometimes give talks at conferences and it usually takes me about two days to prepare a 20 minute speech; and that includes...
Define "blast chamber". If you are talking about something that can fit inside a building the answer is definitly no.
Maybe if the chamber was spherical (with the bomb in the centre) with a diameter of a few km.
Remember that the nukes that complettely destroyed Hiroshima and Nagasaki were...
The idea of an "observer" comes out of the Copenhagen Interpretation of physics, i.e. it is not in any way central to the formalism (as opposed to the interpretation) of quantum mechanics.
There has been a LOT of work done on decoherence in QM over the past 25 years or so and most of it has...
There are plenty of HTS cables around, and they are not really more fragile than ordinary power cables. The main problem tends to be with the cooling system (the tube where the nitrogen flows etc) which can break if you bend the cable too much. But that is a problem with the cable, it has...
No, because the strength-to-weight ratio is nowhere near high enough for steel (or any other known metal). In order to build a structure that could reach orbit using metal it would need to be shaped like pyramid/cone and the base would have to be enourmous (I have no idea how big, but...
Because you would waste MORE energy that way, due to the fact that the conversion to electrical energy is not 100% efficient. The motor would just use more fuel in order to generate the energy going to the battery.
Remember that you HAVE to generate heat in order to get any useful work from a...
Well, the article doesn't say if the missing computers were used in any secret/sensitive work.
I realize that everyone thinks of nuclear weapons when they read about Los Alamos, but in reality that is just a part of what they do. LANL is a national lab (NOT a "nuclear weapons lab") and they...
You do realize that that "forecasting" (or to be more specific, understanding how the climate has changed thorughout the history of our planet and predicting how the climate will change in the future) is what the science of climatology is all about, don't you?
I.e. there are litterarly...
That depends, the losses can be significant.
One reason why there is so much research on superconducting cables in China is that they have a serious problem with losses in their transmission lines. The reason is simply that most of the power plants (hydroelectric dams etc) are located in the...
That is sort of correct. But remember that a real digital signal is always transmissted as an analog waveform, if a circuit is changing 1e9 times/s this means that the signal it is sending out will have frequency components in the GHz range. If you want ot transmit a signal with a speed of 1...
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