Since atom is just a solution of Shredinger equation, its size (maximum probability to find outer electron) is determined by h, e, c which do not change with time - thus the size of a meter stick stays the same.

Same with size of planets, stars, galaxies - their sise being solution of equations involving gravity depends not only on h,e,c, but also on G which does not change with time too.

• Rephrase - luis_hamburgh - November 21, 2001 - 00:23 UTC
• Then what is expanding? - pmartin - November 21, 2001 - 00:35 UTC
  • Virtual particles are filling in - yanniru - November 21, 2001 - 15:20 UTC
    • Wow, really!? - smartguy - November 21, 2001 - 16:43 UTC
    • But, how can we define 'length'? - pmartin - November 21, 2001 - 19:19 UTC
      • Definition of time and length - alexander - November 22, 2001 - 19:39 UTC
        • But you must make assumptions to make the definitions - pmartin - November 22, 2001 - 22:45 UTC
          • Both wavelength and frequency do not change. - alexander - November 22, 2001 - 23:35 UTC
            • How can we be so sure h, e, or c don't change? (nt) - pmartin - November 23, 2001 - 07:18 UTC
              • I predict... - luis_hamburgh - November 23, 2001 - 07:44 UTC
                • Wavelength of light changes - yanniru - November 23, 2001 - 15:07 UTC
                • Luis, you often makes wrong conclusions. - alexander - November 23, 2001 - 18:46 UTC
                  • It was a prediction, not a conclusion - luis_hamburgh - November 23, 2001 - 21:19 UTC
                    • Space is expanding, not structures. - alexander - November 23, 2001 - 22:47 UTC
                      • So, how did our universe attain its current size? - luis_hamburgh - November 25, 2001 - 20:26 UTC
                        • The dark side - yanniru - November 25, 2001 - 21:31 UTC
                          • Thanks, Richard - luis_hamburgh - November 26, 2001 - 02:46 UTC
                            • Universal expansion not detectable - yanniru - November 26, 2001 - 16:05 UTC
                  • Sums it up - bruce - November 23, 2001 - 22:54 UTC
                    • To see the derivation for fsc.. - bruce - November 23, 2001 - 22:57 UTC
    • Fruit salad - luis_hamburgh - November 21, 2001 - 23:47 UTC
• Accelerating Expansion - ymateen - November 21, 2001 - 15:36 UTC
  • Sorry, didnt see yanniru's msg. - ymateen - November 21, 2001 - 15:48 UTC
    • Well, stars are held together by gravity, so - alexander - November 27, 2001 - 00:05 UTC
      • How do you know size was the same? - yanniru - November 27, 2001 - 16:08 UTC