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  1. nucleartear

    Expert puzzle

    May be the fingers are an excellent example of base 1!
  2. nucleartear

    Gibbs paradox

    What I have not seen in books about the Gibbs paradox is that it doesn't exist if we make the Gibbs correction at the logarithm of the Z function, not at the Z function itself, in that way: \ln Z_{i} - \ln N_{i} ! where N_{i} is the number of identical particles of class i, where there...
  3. nucleartear

    Adiabatic theory of perturbations

    Hello there! Do you know any good link about the adiabatic theory of perturbations? (theoretical mechanics) thanx!
  4. nucleartear

    Sell your souls!

    Your soul is worth £147639. For your peace of mind, 1% of people have a purer soul than you. Yeah... I was afraid about questions like "have you ever eaten the heart of anyone?" or "have you ever created a biologic mass destruction weapon and used it at any country like China in the last...
  5. nucleartear

    Maxwell's Demon

    I have not been doing anything on Thermo for much time, but I will try anyway!... If the system is isolated, the temperature of the gas will increase, and the pressure too... If the temperature increases, the entropy will do too... Let's imagine that the gas is an ideal one (it couldn't be...
  6. nucleartear

    What Do You Do If ?

    If only a 10-years-old boy talks with me and I'm his psychologist, I would begin to suspect that maybe I am dead. What do you do if you begin to suspect that maybe you are dead?
  7. nucleartear

    Biggest Danger to the Enviroment?

    Since meteorology and paleontologic-meteorology are not very developed I read their data with care... We only have trustworthy data for the last century, and before the S.XIX some eventual points... At these points we can see the worst flood in the History of Europe was at S.XVII (some times...
  8. nucleartear

    About the amount of weapons

    heheheheheeh:smile: Well, you are right I'm not based on totally-objetive evidences... maybe the governments don't lain to us when they talk about the economy or how many hospitals they have build the last year, but about the details in strategic war movements, they actually do to controlate...
  9. nucleartear

    Interesting Fact: Is it true?

    yeah... I know the Casimir effect... and since it doesn't depend on mass is impossible make a relation between gravity... but since they couldn't compare them experimentally, we only have the theory, that is not so developed due to its "youth" and to the less people that has worked on it (if we...
  10. nucleartear

    Interesting Fact: Is it true?

    Well, it depends on what are u looking for... I read the last one many years ago and I found it... funny... but since I have my spirituality satisfied :wink: I have nothing to do with these books... hehehehehehehe :smile: of course! I think we were talking in a classical way... By the...
  11. nucleartear

    Nanotech will become the next science breakthrough?

    Yea, the technological breakthrough surely will appear at nanotechnology, biotechnology, information technology and cognitive science, where some theoretical basis is done (where the optical, quantum or genetic computing are an example, as you say). The power of these technologies are infitite!
  12. nucleartear

    Nanotech will become the next science breakthrough?

    So many years hearing it... the idea of an unified theory began when HC Oersted found the experimental relation between electricity and magnetism at 1820 as you know... and many times the scientists have believed to be close to it, before 1900! and some contemporaries big scientists predicted...
  13. nucleartear

    About the amount of weapons

    Do you believe that there are more than 20,000 nuclear weapons around the world? The communists used false inter-continental missiles in their military parades in order to scare their enemies and create confidence on their people... It's an ancient political strategy to seem more powerfull...
  14. nucleartear

    Biggest Danger to the Enviroment?

    Have u ever seen them? Remember that the communists used false inter-continental missiles in their military parades in order to scare their enemies... if they have deceived to us once, they can do it another time! Don't be so ingenuous! It's an ancient political strategy to seem more...
  15. nucleartear

    Interesting Fact: Is it true?

    I have read some Deepak Chopra's books! and you will be agree with me that we can only understand him in a spiritually way... About the question, all bodies composed by atoms at the universe are 99,9% empty space, because the 99,9% of the volume of an atom is empty (the space between the...
  16. nucleartear

    Biggest Danger to the Enviroment?

    Sorry for this out-topic question, but, about the heating... Since we are at inter-glacial age, could some facts of the global-heating be explained by a no-human reason? The last glacial-age finished "only" 10,000 years ago, so... maybe the defrosting of some of eternal snows (like at...
  17. nucleartear

    Some doubts on relativity

    Oh! I see where is the problem with the example... Thanx! I thought that we could make a kind of time-rate-map if we know all the objects and their velocity at the scene... and it would depend on the reference as we designated the zero-point in a metric... I see now that was not right...
  18. nucleartear

    Some doubts on relativity

    Thanx for your reply! But... (please, sorry if I'm bothering to you!!:smile:) ...I'm trying to find the relation between A, B and C, so I'm trying to make a mental-experiment where the trip towards the universe doesn't create any problem... You are analyzing the differences between...
  19. nucleartear

    Some doubts on relativity

    Yes, for this reason I say: "The unic forces involved are used to make the trip, so the three brothers have been put under the same forces, so we can't use them to try to find the solution." Yes, I have considered this situation and the other two possible situations: A is not moving...
  20. nucleartear

    Some doubts on relativity

    Thanx for the detailed explanation of the twin-paradox! I have saved a copy of your text in my computer! So, one of them will be younger and it doesn't depend on the reference. It only depends on who has received the forces. (let me know if I have understood it badly) So, in the...
  21. nucleartear

    Some doubts on relativity

    Well, I'm still thinking on it... and maybe the "natural" reference is the center of masses (I don't know if that's the word in english, u know: Rmc = [R1·m1 + R2·m2 +...+ Rn·mn] / [m1 + m2 +...+mn], where R is de vector-position and m the mass) Can anyone tell me if that could be right? Oh...
  22. nucleartear

    Let me tell u a problem

    Congratulations!!! You have win trhee adimensional-points!! You have your first block to make a triangle!! (silly joke, I know)
  23. nucleartear

    Some doubts on relativity

    To Janus, zoobyshoe and Sonty: That point of view is very interesting and makes me thinking... You actually say that the time flows at the same velocity, but if we make a mesure of the time in the moving-object while we are at the static-reference we will detect it flows slower at the...
  24. nucleartear

    How long till I time out on PF?

    The problem is that writting seems to be not an activity, and I spend more than 900 seconds to write some posts... and when I click in Submit, the site ask me for the password and I lose all what I had write... (if I have not made an Ctr+C for security) That PC is only used by me, so, is...
  25. nucleartear

    How long till I time out on PF?

    I'm not an english-speaker and I usually spend more time writting the messages... and I have to write them twice because the time of my account has over... So, can the time be longer[?] [?] [?] Thanx to all!
  26. nucleartear

    Some doubts on relativity

    So, I was thinking in it, and, if we see at the experiments we have: - The satellites orbit around the Earth with a big velocity respect to the Earth, and their time goes slower than at the Earth (the GPS system needs to coordinate the clocks of the satellites every time!) - The experiment...
  27. nucleartear

    Some doubts on relativity

    Sorry!!, it must be: - a-age > c-age > b-age ? - b-age > c-age > a-age ? or - c-age > a-age = b-age ? I have edit it in the other one! So, What's the information we need? What are the details? If we can't know this, that means that we can't know the kinetik energy, either... not...
  28. nucleartear

    Let me tell u a problem

    There are three guys who go to a motel. They ask for a room, and the owner of the motel receives to them $30. After, when the three guys are at the room, the owner remember that room is only $25, so, he calls to the bellboy and say: "Give that $5 to the three guys". But tomorrow is his...
  29. nucleartear

    Some doubts on relativity

    I'm agree with you!! But I don't trying to say they move instantaneously! Thanx anyway!! We have theese three galaxies, A, B and C, where A and B is moving at the same velocity at the C reference... So: - If we are at A, B is moving, so the time at B goes slower than at A. - If we are...
  30. nucleartear

    Some doubts on relativity

    I understand what u say! but seems like we still have a problem: If those three people were born at the same moment at the same place (call it D), equidistant from A, B and C, and each one goes to each galaxy at the same moment (moment at D), and some time after, they come back to D at the...
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