ISO 80000-7:2008 gives names, symbols and definitions for quantities and units for light and other electromagnetic radiation. Where appropriate, conversion factors are also given.
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International Organization for Standardization [iso]
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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.
