This document is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. The copyright holder grants you permission to redistribute this document freely as a verbatim copy. Furthermore, the copyright holder permits you to develop any derived work from this document provided that the following conditions are met. a) The derived work acknowledges the fact that it is derived from this document, and maintains a prominent reference in the work to the original source. b) The fact that the derived work is not the original OpenMath document is stated prominently in the derived work. Moreover if both this document and the derived work are Content Dictionaries then the derived work must include a different CDName element, chosen so that it cannot be confused with any works adopted by the OpenMath Society. In particular, if there is a Content Dictionary Group whose name is, for example, `math' containing Content Dictionaries named `math1', `math2' etc., then you should not name a derived Content Dictionary `mathN' where N is an integer. However you are free to name it `private_mathN' or some such. This is because the names `mathN' may be used by the OpenMath Society for future extensions. c) The derived work is distributed under terms that allow the compilation of derived works, but keep paragraphs a) and b) intact. The simplest way to do this is to distribute the derived work under the OpenMath license, but this is not a requirement. If you have questions about this license please contact the OpenMath society at http://www.openmath.org. Author: Joseph B. Collins (2009), Naval Research Laboratory, Washington, DC. Copyright Notice: This is a work of the U.S. Government and is not subject to copyright protection in the United States. Foreign copyrights may apply. SIUsed_OffSystemMeasuredUnits1 http://www.openmath.org/cd/SIUsed_OffSystemMeasuredUnits1.ocd 2009-04-01 experimental 2009-01-10 1 0 This CD defines symbols to represent units that are off-system with respect to the SI system of units, but are retained for use with the SI. Each unit is determined by experimental measurement. (DRAFT INTERNATIONAL STANDARD ISO/DIS 80000-1 - "Quantities and units", 2008). electronvolt This symbol represents the measure of one electronvolt of energy. It has the short symbol form, "eV". It is the kinetic energy acquired by an electron in passing through a potential difference of 1 volt in a vacuum. Its measured value is 1 eV = 1.602176487(40) * 10^–19 J [CODATA 2006] 1 electronvolt = 1.602176487 * 10^–19 joule 1 10-19 dalton This symbol represents the measure of one dalton of mass. It has the short symbol form, "Da". The dalton is one-twelth the mass of an atom of Carbon-12 at rest and in its ground state. Its measured value is 1 Da = 1.660538782(83) * 10^–27 kg [CODATA 2006] 1 dalton ~ 1.660538782 * 10^–27 kilogram 1 10-27 astronomical unit This symbol represents the measure of one astronomical unit of distance. It has the short symbol form, "ua". It is the mean distance between the sun and the earth. Its measured value is 1 ua = 1.49597870691(6) * 10^11 m [DRAFT INTERNATIONAL STANDARD ISO/DIS 80000-1, International Organization for Standardization, 2008] 1 astronomical unit ~ 1.49597870691 * 10^11 metre 1 1011