The Archives

Sayanee's blog 2005 - 2012. Checkout her latest blog!

Rees' physical constants

15 Feb 2008 on learning

there are only 6 major constants according to Martin Rees:

  1. ?, Nu: the ratio of the coupling constants for the electroweak force and gravitation (circa 1043). The former is simply the fine structure constant, while the latter is the gravitational coupling constant;
  2. ?, Epsilon: related to the strong force;
  3. ?, Omega: the number of electrons and protons in the observable universe (circa 1080);
  4. ?, Lambda: the cosmological constant;
  5. Q: a ratio of fundamental energies;
  6. ?, Delta: the number of spatial dimensions.