Jump to content

5614

Senior Members
  • Posts

    6408
  • Joined

  • Last visited

Everything posted by 5614

  1. That sounds unusual. Can your computer detect that there is a CD in the drive? If so within the BIOS you can firstly disable other startup methods (ie. disable HDD) only leaving the CD, which you did. Alternatively you can change the booting order, so it first attempts to boot from the CD, then the hard drive. The point being it attempts to boot from a CD first - before any other method. If it fails to boot from the CD then it will move onto the second choice (e.g. hard drive).
  2. Try deleting cookies and temporary (incl. offline content) files.
  3. http://en.wikipedia.org/wiki/Double_planet
  4. Works fine for me. If there is an issue it would seem to be an individual issue.
  5. I interpreted his last question differently. I thought he meant why is c = 299,792,458 m/s? Why not 200,000,000 m/s or 300,000,000 km/s? The answer I would give to that would be; that is how the universe is.
  6. There were 3 tracks I could listen to, didn't really like them. Reminds me of Fitness To Practice (Dr Adam Kay and Dr Suman Biswas aka Amateur Transplants) with their songs like: Paracetamoxyfrusebendroneomycin and The Drug Song (just like The Element Song, but it lists all the drugs).
  7. I think I understand it better now. But I can't see how entangling the photons changes the scenario. As far as I can see when you enable the WPD it would still take a/c seconds for the first non-intefering photons to be observed, where 'a' is the distance between the WPD and the detection screen and c is the speed of light. Remember a photon which has passed the WPD but has not yet left the cable will still show interference, as it has not passed through the WPD.
  8. Woa... nice trick! No idea, btw.
  9. Err, I'm not sure! Kinda weird I spose. Kinda cool I guess. Reminds me of people who can remember pi to a stupidly high number of decimal places, or can remember other long lists with ease.
  10. I like reading that, it was very interesting. I think many youth grow up using modern technology and take it for granted, not appreciating the work behind it. As humans enter the world of work and see themselves trying to invent and discover new things it becomes easier for them to appreciate the brilliance of modern technology and those who designed it. I think there's a difference in what is meant by "know everything". An average teenager thinks he knows everything about computers because he's up to date with the latest blogs and YouTube. An adult thinks he knows everything because he designed the hardware and software that the teenager is using. So who really knows everything? Whilst the teenager couldn't identify a RAM module, the adult hasn't heard of YouTube. Of course there are many exceptions to this. One of my Grandpas knows less than nothing about anything modern, whereas the other has spent far too much money and time on his computer. Some teenagers do appreciate just how complex computers are and some olders cannot understand the teenager's world (eg. growing up with and taking for granted computers) and so cannot understand much of the teenage physcology.
  11. Very often the modem is integrated into the router. So you plug your phone line into the router box and a cable between the router box and your NIC (network interface card) in your computer. The router is acting as a modem and a router. As mentioned above, microfilters on ALL sockets. Even the router is faulty it seems peculiar that it would "kill" the phone line. What's the latest news?
  12. Are these two seperate setups? Or are the photons from one fed into the other? Does the 2nd setup just entangle photons? Or are you using them to make an interference pattern aswell? I'm confused about this "other side", what is it? I think the confusion originates from not knowing how these two setups are linked (eg. photons from one fed into another, or totaly seperate setups?) I think the only useful thing I can say is this: Say you have a "which path detector" half way down your fiber optic cable. If you turn it on at t=1 then any photons which have already passed the detector (half way down the cable) before t=1 will display interference. So from the time the detector is turned on the first photon to show no interference would take a/c seconds to emerge. Where a is the distance between the detector and the end of the cable and c is speed of photons travelling along the cable (it's a model, lets assume they travel at exactly c). So for the first a/c seconds interference will still be shown. However then you started talking about entanglement, which confused me, so maybe this is not what you mean.
  13. Yes, that might be a bit of an issue... however I can't see any sensible legal reason why you should not be able to do this.
  14. Easily. A CD is 700MB, so 4 of them is 2.8GB and a standard DVD is 4.7GB. All you need is some software to burn the DVD with. I use Nero. Or just do a google search for; dvd burner free: http://www.google.co.uk/search?hl=en&safe=off&q=dvd+burner+free&meta= Does that help?
  15. 1) This is not certain, it is an estimate. If the actual average density of the universe was known then the future of the universe (ie. big crush vs expand forever) would be known. However we do not know the average density of the universe, although there are many estimates and calculations which seem to vary between 5 and 10 atoms per meter cubed. However in a star you're getting billions and billions of atoms per m³, so in deep space the density must be significantly lower to average out the relatively massive density of the stars/plannets. If you think that there are [math]10^{23}[/math] atoms in just 12 grams of carbon-12, the density in deep space must be very, very low.
  16. 5614

    House Doors

    My back door opens outwards, and the front opens inwards. I think the idea is that you don't hit someone who knocks on your door. Not so sure about the backdoor, other than it is a door which leads to the garden, so it opens towards the garden. It could just be one of those things. Like having the hot water tap on one side, why don't we have it on the other?
  17. Well, I won't download that song... And that guy had too much spare time on his hands!
  18. If the above don't help you could look into some of the iPod video converters, they will generally change it to mp4 format. ImTOO iPod or Videora are ok ones, I think you need to pay for both of them though.
  19. Up to you! If you have the time then go for it!
  20. 5614

    OpenSci?

    Yer, I saw someone on something unusual a few weeks ago, it might have been OpenSci. I followed the link on the Who's Online page only to see that I couldn't access it...
  21. 5614

    Relocating Israel

    You wouldn't suggest moving Florida because of all the natural disasters (hurricanes and the like) that occur there. Now I know this is natural disasters whereas in Israel it is terrorism, but the reality of wanting to move a whole country (or even just 1 state) is just totaly impractical, it could never be done.
  22. Well, the critical density of the universe is about five hydrogen atoms for every cubic meter*. Now whether the average density is above, below or exactly that figure is still unknown, but it's not going to be vastly vastly different. So it gives you an idea. However this is an average for the entire universe. Within a planet it is, relatively, very dense. Even a solar system is, relative to the universe, very dense. "Using the average density of the Earth, or the solar system, or even the Milky Way galaxy as an indicator [of density] for that of the whole universe would be like using Bill Gate's net worth as an indicator of the average earthling's finances... there is a lot of nearly empty space between the galaxies that drastically lowers the overal average matter density"* So back to your question. You ask between stars but within the Milky Way. So I'd say it's about critical density, as a massive guess! So about 5 atoms per cubic meter. Within a solar system with many plannets it is much more. Between galaxies it is much, much less. Hope that answers the question, approximately! *source and quote; The Elegant Universe by Brian Greene
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.