Mathematics *Explore April 24, 2013 #4* (at one time)
For Our Daily Challenge: Inventions... to me it's probably Mathematics, without which little else may have followed.
This is several images, textures and brushes blended and composited with Photoshop. Added some noise and other Photoshop filters to roughen the image.
The composite image is mostly my basement wall, and public domain grunge textures; the graphs and charts, photographs from Math and other texts; and the formulae Photoshop brushes.
For Our Daily Challenge: Invention
Project 365 2013: Day 106