---------------
Acknowledgments
---------------

Thanks to the contributors to 
- the newsgroups sci.physics.research 
- the newsgroups de.sci.physik, and 
- the Physics Forums at http://physicsforums.com
- the Physics Stack exchange at http://physics.stackexchange.com
for their more or less challenging questions and comments, without 
which this FAQ wouldn't exist.

Thanks also to Steve Carlip, Norbert Dragon,
Hendrik van Hees, Don Koks, Nick Maclaren, 
Alejandro Rivero, Joe Rongen, Nicolaas Vroom and Gerard Westendorp 
for useful comments that lead to improvements in the FAQ.

Finally, thanks to God for his wonderful and interesting universe,
and for the gift of being able to understand his many wonders on all 
time and length scales.