Dear Allen, Thanks for the diagram but really it doesn't help me at all (I'm probably too thick!). I'm sure my question could be explained in just a few words. First of all what kind of clock do we use meaning how do we define what an 'hour' is? Or is an hour defined from how we define what a year is? Jack ----- Original Message ----- From: Allen Daves To: geocentrism@xxxxxxxxxxxxx Sent: Sunday, November 11, 2007 5:13 PM Subject: [geocentrism] Re: Magnitude of scale CORRECTION Jack, i attach a diagram that i think will explain the MS explination for you quite easily...