angstrom angstrom  /ˈæŋ strəm/


  • (n) a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation



  1. Using film treated with neocyanine the solar spectrum has been photographed up to 11,634 angstrom units, far beyond red at 8,000 angstrom units, the longest visible wavelength.
  2. The visible spectrum ranges from 8,000 to 4,000 angstrom units.
  3. Its field of operation extends on both sides of the visible light spectrum up to 10,000 angstrom units on the infra-red range, down to 1,000 on the ultra-violet.



  • "In the Nature experiment, we carried out the highest-resolution measurement ever made of an individual protein," says Steven Block, professor of applied physics and of biological sciences. "We obtained measurements accurate to one angstrom,...
    on Nov 13, 2005 By: Steven M Block Source: EurekAlert (press release)

Word of the Day
pivotal pivotal
/ˈpɪ və təl /