Well worth a skim by electrical types, and probable value to most people with an inquiring mind. Fundamental physical constants. 8 page PDF. Comprehensive :-) http://physics.nist.gov/cgi-bin/cuu/Category?view=pdf&All+values.x=108&All+values.y=21 "Unusual research" home page. http://www.unusualresearch.com/index.html Much good electronics stuff. Old data sheets and app notes. Also some weird stuff. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body