Externet Posted March 7, 2008 Share Posted March 7, 2008 How is it called? It is shown usually in the Pacific ocean -for available space-, I believe has something to do with (solar?) declination trough seasons, it is an elongated "8" What does it mean ? Link to comment Share on other sites More sharing options...
swansont Posted March 7, 2008 Share Posted March 7, 2008 It's an analemma, that describes the "equation of time." The earth's orbit isn't perfectly circular, so the orbital speed changes over the course of a year, and that means that the sun's position at noon varies. The analemma describes the deviation. http://www.analemma.com some awesome pictures (taken over the course of a year at the same place and same time of day) at http://www.perseus.gr/Astro-Solar-Analemma.htm Link to comment Share on other sites More sharing options...
Externet Posted March 7, 2008 Author Share Posted March 7, 2008 Thanks ! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now