Uncategorized
-
19194
Your article reports that adding single-wall carbon nanotubes to a ceramic can “nearly triple its resistance to fracturing.” The similar technology of adding tubes (straw) to bricks has been around for thousands of years and is of comparable effectiveness. Lee W. CaspersonPortland, Ore.
- Materials Science
Fracture Protection: Nanotubes toughen up ceramics
The addition of carbon nanotubes to a ceramic material dramatically improves its fracture resistance.
-
Wonderful World of Color
What causes color? This nicely illustrated Web site offers vivid explanations of the different ways in which color arises when light interacts with matter. Go to: http://webexhibits.org/causesofcolor/
- Math
Lacing Shoes, Revisited
What is the best way to lace your shoes? This seemingly simple question, rooted in everyday life, can provoke passionate argument–and prompt a mathematical response.
