Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Know H or CM?

  1. Dec 1, 2007 #1

    cornfall

    User Avatar
    Gold Member

    Does hydrogen in its ground state occur naturally, ideally, experimentally? Is it stable? Is this like asking, "Does a center of mass occur naturally, ideally, experimentally? Is it stable?"
     
  2. jcsd
  3. Dec 1, 2007 #2

    malawi_glenn

    User Avatar
    Science Advisor
    Homework Helper

    Center of mass with respect to what?

    What hydrogen are you refering to? H-1, H-2, H-3, H-4, H-5 etc?
    or Hydrogen ATOM?
     
    Last edited: Dec 1, 2007
  4. Dec 1, 2007 #3

    Dr Transport

    User Avatar
    Science Advisor
    Gold Member

    Hydrogen not helium??????
     
  5. Dec 1, 2007 #4

    malawi_glenn

    User Avatar
    Science Advisor
    Homework Helper

    hehe was just reading about Helium "burning" (triple alpha), so therefor my missprint;)

    Have edited now
     
  6. Dec 1, 2007 #5

    cornfall

    User Avatar
    Gold Member

    Center of mass for two particle's equal and opposite 4 momenta or for the separation of a system's internal motion from its external motion.

    The not allowed hydrogen atom.
     
  7. Dec 2, 2007 #6

    malawi_glenn

    User Avatar
    Science Advisor
    Homework Helper

    What is a not allowed hydrogen atom?

    You have the boltzmann distribution that hydrogen can be in its excited state for some certainty. Yes stable Hydrogen in ground state exists.

    What that has to do with your question about center of mass, I have no Idea.

    Center of mass is a description, so it is not an entity. It is like asking if length exists.
     
  8. Dec 2, 2007 #7
    The transition energies from the Hydrogen ground state to the various excited states have been very well measured. That couldn't easily be done if the ground state were not physically realizable.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Know H or CM?
  1. Revival of CM ? (Replies: 78)

Loading...