Thanks a lot. I have since found daniel's post on this subject that I missed when he first entered it. Actually, I have been swirling the container only but now will find an appropriate stirrer as you suggest. Also per daniel's suggestion, I only drink out of a glass and not plastic cups. I need to search my area for natural artesian water sources.bruce wrote: If you're going to swirl, use a copper paddle, not iron, steel or aluminum--and particularly not plastic. Silver is better, but pricey. You can use wood, too.
Is one of the reasons for using copper and silver (gold?) that they repel magnetism? Diamagnetic? I have seen the videos online where a neodymium magnet is slowed down in free fall while passing through a copper pipe.
Also, thanks for your reevaluation book on rs2theory.org. So many fundamentals are beginning to get cleared up, but the section on calculus differentials is still eluding me more than I would like. Funny, calculus in school came fairly easily but I wish we were given more real life applications. It has been such a long time since I have looked at this subject and the recall is slow at best. The concept of projective geometry shadows in space is just starting to kick in. Amazing. Poco a poco.