Worzel, huh? That makes for an interesting connection. Thanks for identifying yourself. Don't take offense at this but coming over to this site has made you seem much more the diplomat than when you were on BA. (D'ya think it would do the same for even Maksutov? Hmm. That fellow was harsh. At any rate, I don't think a guy who tosses hotel bibles in the trash for fun would ever darken our door.) I should re-read some of your posts there now. When I went to BA I wondered if Rob Glover would show up and then one day he recognized me from here and identified himself as Yorkshireman. It all makes for some interesting connections. (Where does "Worzel" come from, BTW?) Mike wrote: > But the point is this isn't completley closed. The kinectic engergy is > disapted as heat while the angular momentum remains constant. I was > showing you that loss of kinetic energy is not necessarily loss of > angular momentum. Do you agree with that statement? > Mike, from what I know, I agree with you on the "completely closed" thing. I don't understand how anything could really be considered "closed" in this universe, except in some very limited "mostly closed" sense. So as far as this thought that losing kinetic energy would not affect AM, let me say that it seems to me you are postulating that this part of your metaphor IS in a closed situation where, yes, the AM would be conserved. But, Mike, if there is openness for the kinetic energy to dissipate, isn't it just as true there would be openness for the AM to dissipate? Is not friction a valid "outside" force for both, Mike? I mean, a number of times someone or the other on BA would tell me that space is not a perfect vacuum. And Dr. Jones just stated that it is full of "debris". Well, if that's true (or if aether is considered) then would there not be a component of friction in your hypothetical space example that would actually reduce, albeit possibly minutely, the AM between the two bodies? Now I suppose you could say that the AM of "space", or of the particles that caused the friction in space at least, would have changed a corresponding amount, but then that does seem mighty open. If we're talking about friction on the earth's atmosphere from space, then over billions of years what effect would that have had? Thank you, Sincerely, Gary