Optical Illusion maze of multiple spinning circles. Created by Yonatan Frimer. Maze solution can be found at http://teamofmonkeys.com
If you feel faint or dizzy while trying to solve this maze, then close your eyes! Don't bother to try looking away as that might not work, so if you get dizzy, remember CLOSE YOUR EYES, and then look away before opening them again.
1195 days ago via site
Running ASTM C 944 Abrasion Resistance of Concrete or Mortar Surfaces by the Rotating-Cutter Method
1609 days ago via site
1734 days ago via site
Swiss A332 from this afternoon.. nice rotation.
1927 days ago via site
The view was hazy but actually much better than this photo suggests (poor mobile cam). Inspiring view for planning.