60,000-Year-Old “Highly Unusual” Etchings Could Point to Humanity’s Earliest Use of Geometric Design
Evidence of early human use of geometric concepts in prehistoric art has surfaced in Africa, pointing to complex patterns in ancient etchings on ostrich eggshells.
Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...
Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...
The following article on the geometry of cutting inserts was prepared by Iscar Ltd. and edited by Bruce Vernyi, Editor-in-Chief The evolution of cutting tool shapes and cutting edge geometry is an ...
Watching sparks fly and 600 pounds of melting iron glow from a historical furnace set in the parking lot of Ryan Field, Mike Pitorak was excited, fulfilling his year-long plan to take DSGN 395-64: ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results