New NIST nano-ruler sets some very small marks
Tuesday, September 22, 2009 - 18:07
in Mathematics & Economics
The National Institute of Standards and Technology (NIST) has issued a new ruler, and even for an organization that routinely deals in superlatives, it sets some records. Designed to be the most accurate commercially available "meter stick" for the nano world, the new measuring tool -- a calibration standard for X-ray diffraction -- boasts uncertainties below a femtometer.