The files in this section are more than a dozen years old. Knowledge, data, information - whatever - do not "age" as do physical artefacts. They can become outdated, or be superceded by more recent discoveries. Most here, however, describe fundamental physical phenomena that are millennia old and, if not eternal, at least approximately so.
What does change is presentation. The computers and screens of last decade were much inferior to those of today, and the styles of presentation here are decidedly dated. If time and interest permit they will be upgraded. For the present they are presented "warts and all". Kindly excuse the warts and savour the information.
When reading other files, use INDEX in the Navigation Bar above to move between them.
Index to the Music Section