http://arxiv.org/abs/gr-qc/9712019

http://docs.google.com/a/colemantech-high.com/viewer?url=http://www.grc.nasa.gov/WWW/k-12/Numbers/Math/documents/Tensors_TM2002211716.pdf

3d sketchup models

http://www.3dxtras.com/3dxtras-free-3d-models-details.asp?prodid=4418 (nmccurdy)

Net-SEAL: Switch Networking Animation

Net-SEAL: Switch Networking Animation:

'via Blog this'

http://blog.bogojoker.com/2008/07/command-line-svnignore-a-file/

Unison as rsync replacement

http://www.cis.upenn.edu/~bcpierce/unison/download/releases/stable/unison-manual.html#backups

'via Blog this'