What is the Significance of the "S" and "A" in the Physics Forums Logo?

[Chris Hillman]

In the "Physics Forums" logo, what is the significance of the small white "S" inside the large blue "P" and the small white "A" inside the large green "F"?

This mystery has been eating away at me for some time...

 

[Kurdt]

there's a sticky in GD about that very subject.

https://www.physicsforums.com/showthread.php?t=165003

It might be better if the sticky was moved to this forum.

 

[Chris Hillman]

Thanks! I never thought of that (maybe because my presence at PF hardly overlapped with his, but I've been impressed by some of his posts from years ago which I happened across.)

 

[Astronuc]

SA's last post was on 12/02/06 and then he took off for vacation with family.

 

[Danger]

And that was the up-side; he was with his family. His extended family here takes comfort in that.