by Astromontufar » Sun Nov 30, 2014 12:32 am
Hi all,
I understand the 500 rule or 600 rule perfectly fine, however a question came up while talking about the rule, does any knows why is 500 or 600, I mean where did that number came from?
Thank you,
Sergio
Hi all,
I understand the 500 rule or 600 rule perfectly fine, however a question came up while talking about the rule, does any knows why is 500 or 600, I mean where did that number came from?
Thank you,
Sergio