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angstrom |
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angstrom (ăng`strəm), abbr. Å, unit of length equal to 10−10 meter meter, abbr. m, fundamental unit of length in the metric system . The meter was originally defined as 1/10,000,000 of the distance between the equator and either pole; however, the original survey was inaccurate and the meter was later defined simply as the distance ..... Click the link for more information. (0.0000000001 meter); it is used to measure the wavelengths of visible light and of other forms of electromagnetic radiation electromagnetic radiation, energy radiated in the form of a wave as a result of the motion of electric charges. A moving charge gives rise to a magnetic field, and if the motion is changing (accelerated), then the magnetic field varies and in turn produces an ..... Click the link for more information. , such as ultraviolet radiation and X rays. Scientists now prefer to use the nanometer (nm); 1 nm=10 Å. The angstrom is named in honor of Swedish physicist Anders J. Ångström. angstromA unit of measurement equal to .1 nanometer, which is approximately 1/250 millionth of an inch. Angstroms are used to measure the wavelengths of light and the elements in a chip. One nanometer is equal to 10 angstroms, and one micron is equal to 10,000 angstroms. The size of an atom is three to 10 angstroms. angstrom a unit of length equal to 10--10 metre, used principally to express the wavelengths of electromagnetic radiations. It is equivalent to 0.1 nanometre. angstrom [′aŋ·strəm] (mechanics) A unit of length, 10-10meter, used primarily to express wavelengths of optical spectra. Abbreviated A; Å. Also known as tenthmeter. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| ? Mentioned in | ? References in periodicals archive | |
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Traditional products create dishing of about 500 angstroms during
the polishing process, so a thick coating must be placed over the copper
to secure proper interconnect thickness. 20 Ra angstroms in a mere matter
of seconds per measurement point, accurately, and repeatable. Brought no closer than about 200 angstroms from a
liquid's surface, the needle induces changes in the distribution
of electric charge and orientation of the liquid's molecules,
creating an attractive force. |
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