Notices
Results 1 to 2 of 2

Thread: Question about quantum mechanics!

  1. #1 Question about quantum mechanics! 
    Forum Freshman
    Join Date
    Feb 2013
    Posts
    15
    I am confused about group velocity, phase velocity, and signal velocity of waves. Which of these would be the velocity of the corresponding particle to that wave? And, what's the difference between signal and group velocity? Is there a difference?


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Professor river_rat's Avatar
    Join Date
    Jun 2006
    Location
    South Africa
    Posts
    1,497
    Group velocity = velocity that the wave packet moves through the medium in question.
    Phase velocity = velocity that a single market node or anti-node moves through the medium in question.
    Signal velocity = velocity at which information carried by the carrier wave propagates through medium. This is usually equal to the group velocity, if the medium is linear for example.

    In relativity, signal velocity is bound by the speed of light - the other two arent.


    As is often the case with technical subjects we are presented with an unfortunate choice: an explanation that is accurate but incomprehensible, or comprehensible but wrong.
    Reply With Quote  
     

Similar Threads

  1. Replies: 59
    Last Post: February 23rd, 2013, 11:32 AM
  2. Quantum mechanics
    By Garrett M in forum General Discussion
    Replies: 0
    Last Post: February 19th, 2013, 06:51 PM
  3. What is Quantum Mechanics?
    By TheScienceNerd in forum Physics
    Replies: 1
    Last Post: April 5th, 2010, 07:43 PM
  4. quantum mechanics
    By shawngoldw in forum Physics
    Replies: 4
    Last Post: July 17th, 2007, 03:41 PM
  5. quantum mechanics???
    By pyrofreak2 in forum Pseudoscience
    Replies: 6
    Last Post: August 13th, 2006, 08:29 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •