About the sonic pressure wave, yes that tube thing should work and you
could make an optical feedback system to change the frequency....similar
to what Dr. X used to change the frequency in a column of water so a
standing wave was MAINTAINED as the water evaporated.
As to the sonic garbage crushers and the sonic compression and
refrigeration, those are on http://keelynet.com/index98.htm
I am working on a search engine for the keelynet.com website and
directories so it will be easy to look up any file by a search word or
phrase. Never did PERL before but found some great resources and
programs that I can modify and experiment with....always something
else...but this will be helpful to a lot of people....including
me...<g>..
-- Jerry W. Decker / jdecker@keelynet.com http://keelynet.com / "From an Art to a Science" Voice : (214) 324-8741 / FAX : (214) 324-3501 KeelyNet - PO BOX 870716 - Mesquite - Republic of Texas - 75187