LancPhotoMeetup-0019
Simple to explain, hard to solve. This classic puzzle has a lot of hidden mathematics in it.
14-03-22 LSF-40
IMG_0756
IMG_3332
Benhams_disk_1_
A Benham’s Disk
sign
318054_10151390123289819_249018902_n
trussbridge2
The Truss Bridge, special thanks to High Steel Structures, Inc.