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5614

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Everything posted by 5614

  1. It's not just you. I press the "" button, it goes red, then nothing. Even if I then hit the Quote button it doesn't multi-quote. If you hover the mouse over the " button it says multi-quote this message, but either I can't work out how to use it or it doesn't work.
  2. Thanks Martin' date=' I didn't answer as I'm not really certain. We need Severian or Swansont to answer. If I were to guess I would say no, because: Whenever I've seen the maths it always involves a two state system, shown as [math']|0\rangle[/math] and [math]|1\rangle[/math]. I've never seen further variables or states mentioned. A system is described by one quantum state, although this can be described in different ways, for example a wavefunction or a set of quantum numbers, it is still one quantum state per system. In fact, and this convinces me that I'm correct, the definition of a quantum state is*: "the quantum state of a system completely describes all aspects of the system". *quote from Wikipedia, I know it's wiki, but I think it's correct and wiki worded it better than me, so I used it! If the (ie. the one and only) quantum state describes the entire system, then there is no second state. What other state did you have in mind? This is all my thoughts. It would be good if someone more knowledgable could comment on the above. In fact, I've just been reading a bit more and I think I know what Skye is getting at. There are many quantum numbers which combine to make what is known as the quantum state, ie. magnetic and spin numbers, as well as several others. If we were only teleporting part of the quantum state, say the magnetic number, then we could teleport that magnetic number and, say, the spin. However we are not teleporting part of the state. We are teleporting the entire quantum state and all the quantum numbers associated with it. We are teleporting every part of the whole system. When you teleport the state you teleport every single individual property, leaving no extras behind which you could teleport seperately or additionally. All of the 'other states' are included in the all-encompassing quantum state, which you are teleporting. Leaving no other property behind which you could use to store additional data. So I'm now even more convinced that the answer is no! Not that I'm necessarily right, just that I think I have convinced at least myself!
  3. And by "one-way" he means a hardware firewall, like you find in a router. A hardware router only stops the simplest of attacks. If Bob sends you a virus the router will say "alice hasn't asked for that" and reject it. If however Bob puts his virus on a website and you go to the website then the router will say "alice wants this website, allow it". This is the fundemental flaw in hardware firewalls. Using software firewalls, such as Norton and the popular free Zone Alarm, patches this flaw in your security. As for which programs, this is my list: Firewall (stops hackers): 1) for free Zone Alarm http://www.zonelabs.com/store/content/company/products/znalm/freeDownload.jsp?dc=12bms&ctry=GB〈=en 2) if you're willing to pay I prefer Norton Personal Firewall http://www.symantec.com/sabu/nis/npf Anti-virus (does what it says on the tin): 1) Avast (free) http://www.avast.com/eng/download-avast-home.html Anti-spyware: 1) Ad-Aware SE Personal http://www.download.com/3000-2144-10045910.html So that's 3 progs, which is as simple as it possibly gets! Unless you get two combined into one!
  4. Imagine you have your air conditioner cooling your room. You could think of it as heating the outside. The opposite of air conditioning is easily made, although heaters are a lot more common as they consume less energy. Having said that heaters, and reverse air conditioning, all run on electricity, which is currently generated, mainly, by burning fossil fuels. So quite how this is a solution to the 'fossil fuel issue' I can't see.
  5. Ah, that explains it Dak! They weren't really drunk, they were driving on the *real* side of the road! Americans Love from, The British!
  6. Yep, you still need to forward ports. Regarding static IPs, from a gamers point of view: Advantages 1) Were you to host a server your IP would always be the same, people would know and recognise it as, hopefully, a good server. It also means that if you want to invite someone to your server you know your IP, without having to check it (although that does only take 2 seconds). 2) If a game's tracking system worked by IP and your IP kept changing then the game couldn't track you personally as you would keep playing under different IPs, it couldn't properly track you unless there was an IP-independant login system. Disads 1) If you get banned (usually occurs by your IP) then you're stuck. Whereas if you could change your IP you could get around the ban. 2) It's easy to track you. Everyone knows that your IP is your IP, you can't change it, it identifies you. To be honest though, with the growth of broadband and 24/7 connections many people have a dynamic IP which they never change, so it seems like a static IP. So for example my dynamic IP only changes when I reset the router. I do this occasionally to save settings, however the average person doesn't change their router settings, they do not reset it either. So although their IP could, in theory, change (it is dynamic) as they are always connected and never reset their connection, their IP remains the same and seems as if it is static. A dynamic IP only changes when you reset the connection.
  7. Maybe I will try the non-breathing thing sometime soon, not now, just had dinner! Maybe tomorrow. Occasionally, by accident, I have let melted cheese unmelt (is that a word?!) and it does not taste good. Although my reasoning may not be universal. Normally I only leave melted cheese if it's too hot to eat, the only time it's too hot to eat is when I've melted it for so long that you have different liquids forming from the cheese. The cheese melts and seperates to its component liquids. As it 'unmelts' these liquids do not come back together, so the cheese doesn't taste the same. If however you melted cheese, but only so it was soft, not completely melted into its component liquids, then when it 'unmelts' you could get a normal tasting cheese. Maybe I'll try that as well! Finally, when I say it does not taste good, what I mean, scientifically, is that it doesn't taste like that cheese before it was melted. Its taste has changed, it is personal opinion as to whether it is nice or not.
  8. Ooh dear gawd, tau quarks, doh! No, there's no such thing! A tau is a fundemental particle and is a lepton, not a quark! There are only 6 quarks, and they are the 6 quarks (u, d, c, s, t, b) which can be found on the right side of the generation diagram. There's also another 6 corresponding anti-quarks, although generally you would say there are 6 quarks, it almost goes without saying that they have anti-quark partners which you're not including in the 6.
  9. Yeah, I agree with ParanoiA about the double quotes, although I could live without it. I also prefer the old New Posts button, with the time periods.
  10. Life's great isn't it. Maybe the girls were good looking and the teacher didn't want to take the matter further. And besides, if they were only doing 5mph then, although they're a bit drunk, it's nothing terrible. They were on private (school) land and not the main road afterall. But hey, I agree with you! What can ya do?
  11. Really? *interested* So if I put a peg over my nose and stopped breathing for a little bit would melted cheese not taste as nice? I wouldn't have said melted cheese does taste better. I prefer it, I like the softer texture and find that the flavour does change, and I prefer the melted flavour. However I also would have thought some people prefer it straight from the fridge. I would have put it down to a matter of personal taste/opinion...
  12. Yes, but it was our front page. A place with the logo, a general summary, buttons on the left, things on the right. News, recent threads. Less text and a bit more space. I often just went straight to the Forum Index, but I miss the fact there is no home page now. Not needed, IMO. How it was, as a home, a summary, a page which when someone logs onto they can get a really quick overview. Now if someone quickly logged on and saw a long list of text and lots of categories they'd be a bit put off. A simpler, plainer page, with more space, a nice logo etc. looks a lot better, to me and to visitors, guests, and prospective members. Additionally many current members seem to want it back. Those who don't just bookmark the index, so no probs with them either.
  13. Thank you very much YT! Always good to hear Well, the only time you could be referring to is the big bang. I don't know, but using logic I can say that at the time of the big bang, when the energies were massive there most certainly would be a lot of high energy particles, so there would be a majority of quarks leptons being tau. Tau quarks particles will quickly decay into other lower energy particles, however if we go to a moment after the big bang but before tau quarks particles had time to decay... I'm not sure, we're getting into the region of what exact particles were created at the instant of the big bang - no one knows. Were there only tau and no muons created? Was there a bit of all particles? Was there some even heavier undiscovered particle which decayed into a tau? The last is unlikely, but as far as I know we don't know which, if either, of the first two it was. You do see high energy particles during high energy collisions. So if you have an e- and an e+ with a high kinetic energy, then when they annihilate the photon produced will have sufficient energy to split into other particles. Or you could get no photons and some other particle instead, such as a W+ and W- pair or a single Z boson. As for how to think of it; when someone names a particle I think of it as just that. But when I think of them in relation to their generation I see electrons and e.neutrinos as, well, 'normal' particles. Then the 2nd generation as big things zipping around quickly with the view of decay, then as 3rd generation particles as rare, massive particles with a lot of energy that will decay, most probably, very quickly.
  14. Just to quote part of that second site: The point of me showing you that quote is just to make clear that this is quantum teleportation. Only the quantum state is being teleported, not the actual light. This quantum state can be teleported in various ways, usually a laser is used, meaning that the data is transferred at the speed of light (speed of the light from the laser) and so nothing is actually being transferred faster than c. I know many of you know, just pointing out for those who are not so sure.
  15. Or you can try using Google, but be careful, there are a lot of incorrect sites out there regarding this kind of topic, if you need help picking out trustworthy sites we can help. Also this is a currently debated topic and there is research going into things such as this, so reading a report from 2 years ago may not give you all the latest news.
  16. Yeah, I agree, 3 letters... dude, doesn't sounds the same as 4nums does it!? So yeah, I agree, Dak! Not that anyone would ever vandalise wiki! 'wireless compatable broadband', I hadn't seen that one, but it's such a joke. How little some people know and how far that is exploited by companies. There's probably people phoning BT saying "my service isnt called wireless compatable but I want wireless network, help", and I mean, tbh, it's quite sad. I can't belive an ISP would actually advertise an IP addy, but then I wouldn't have believed that BT one either...
  17. Demosthenes is correct. It hides you Public IP address from the sites you are visiting. It does not hide them for your ISP. These sites offering 'anonymous surfing' often work by routing data through their servers. So if you want to go to Google then you (by typing in the Google site address) send a message to anonsurf.com and then anonsurf.com loads Google. This means that were Google to be tracking who loads data from their site it would register anonsurf.com and not you as the person requesting the data. This is obviously simplified, but I feel it gets the point across. With the ISP it's different. Everything you do on the Internet goes through your ISP. The world works like this! Your computer --> ISP --> Rest of the world therefore everything goes through the ISP. ISPs generally protect customer details very well, although when there is sufficient evidence they can be forced, by law, to give the details of customers using the Internet for illegal purposes, e.g. downloading. It also is very linked to a few other related topics. In China data is censored at the ISP level, this means that you cannot get around the censoring. A slight complication, although interesting all the same, is ports. For those who don't know a port is like a door or a window of a house. Just when you go to your neighbours you knock on their front door, so when you play, for example, Halo PC it uses port 2302. When you use a download program it will, by default, use a certain port. For example Bit Torrent uses port 6881. Some ISPs want to prevent people from downloading, so can block or limit data transfer on port 6881. NB: You can change the port a program is using, but many people do not or do not know how.
  18. As others have suggested theories such as String theory says that there are more than 4 (3 spatial and 1 time) dimensions. The simplest reason for this, within string theory, is that the strings need to vibrate in quite specific ways. So all electrons are strings vibrating in exactly the same way. To allow for the correct vibrations for all the known particles there is a need for extra dimensions. The proof of this is very complicated maths! As for travelling in those dimensions as a shortcut, no.
  19. What Klaynos said is basically right. It's like your computer's house number, is the analogy I like to give. So saying that they're giving you a Public IP is like when you buy a house being told that you will get a house number. The analogy breaks down though, as two people can have the same house number, no two Public IPs can be the same. A better analogy would be the address or fingerprint of a computer. A unique identification number. As Klaynos suggested there are slightly different types of Public IP. Ones which change every time you restart your Internet connection, and those which are the same forever. This might have been what they're advertising, although it's really nothing to show off about. If you want more detail about how IPs work within a LAN (Local Area Network), in simple terms, then just ask!
  20. I don't know off the top of my head, but a search like this: http://www.google.co.uk/search?hl=en&safe=off&q=visual+basic+microsoft+fingerprint+reader&meta= should help.
  21. Yes, it's the mail server speed which counts. For example: When I send off an email I get taken to a 'sent' screen, I think click to go back to the Inbox. When I send off an email which generates an automated reply, if the automation is quick, then by the time I have gone back to the Inbox (a few short seconds) the response will be there. Whereas with some slower mail servers it will take more like 10 seconds before the response will be received. Different companies, different servers, different speeds.
  22. Yes, what Operating System? Also what devices, other than your printer, are you plugging into your USB port? And are these products officially supported by your OS?
  23. I made you a generation table: Where: Ve = electron neutrino Vu = muon neutrino Vt = tau neutrino u = muon and all the others are the normal meanings. I am aware that it should not just be a normal 'v' to represent neutrinos, but this is Paint! It'll do for now! (Same with mu and u for a muon.) OK, so the 4 fundemental particles in the middle red box are first generation. The 4 particles in the 2nd blue box (Vu, u, c, s) are second generation and the outter 4 in the green box (appologies, when I saved as .jpg the blue and green now look similar) are the third generation. This brings us back to the question; what's the difference? There are only two differences. 1) energy (or mass, same thing) 2) flavour As labelled in the diagram, oh, I wrote mass in the diagram and not energy, nevermind, same thing! The lower generations have a lower energy, this means that they are more stable. So if you look around you will see, or the things you see will be made up of, first generation particles. This is because particles prefer the lowest energy state they can reach, and attain it through decaying. Atoms are made from up and down quarks and orbitting electrons. Whilst the electron neutrino does not easily interact with anything, they are almost everywhere. In particle accelerators where there are a lot of high energy particles it is common place to find charm and strange quarks (as well as 3rd generation particles), although remember that quarks are never isolated due to confinement, they are always in groups of quarks. There are some theories which say that at even higher energies there may be a 4th generation, however the Standard Model and some other experiments suggest that it is theoretically impossible to have a 4th generation. I'm not quite sure what you mean by that. They are grouped that way according to their energies. Whilst I would think it more likely that higher energy particles were only discovered more recently, as high energy particle accelerators were only made more recently, I do not know the precise order in which the particles were discovered, nor does it have anything to do with which generation they are in. As for an example of one changing, I know one example off the top of my head:top quark --> bottom quark + W boson I know that one because that decay happens so quickly that the top quark does not even have time to form a hadron, ie. it effectively bypasses the confinement rule, which says that no quark is ever found by itself, because it decays so quickly. Long post, hope it helps, although I suppose you know some(/most?) of it already.
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