rstofer
Contributor
I think Mr. Richard gave me the answer I was looking for. It is an ATA to depth conversion. Now why in the world could PADI not have just put that in thier book for over analyzing brains like me?
Thank you everyone for you responses.
The only reason I knew what those 'magic numbers' represented is because, like you, I wanted to really understand the equations. All of the other equations were quite simple but when PADI decided to use 'magic' constants, I couldn't sit still until I knew where they came from.
It's an engineer thing, I guess.
Richard