Uncategorized

  1. Math

    Crystal Möbius

    Take a ribbon of paper, twist one end 180 degrees, and attach it to the other end. The resulting surface, called a Möbius strip, has only one side and one edge. Scanning electron microscope image shows niobium selenide crystals in a Möbius-strip conformation (top). In the schematic diagram (bottom), a white ribbon represents a niobium […]

    By Ivars Peterson
  2. Chemistry

    Carbon nanotubes burn when flashed

    Carbon nanotubes can ignite when exposed to an ordinary camera flash.

    By Jessica Gorman
  3. Humans

    Science Derby: Student research and inventions nab awards

    On May 12, more than 1,200 high school students came to Louisville, Ky., to vie for more than $3 million in scholarships and prizes at the Intel International Science and Engineering Fair.