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angstrom unit, symbol: A or Å
A length equal to 10-10 meters or one-ten-millionth of a millimeter, used for atomic measurements and the wavelengths of electromagnetic radiation.
A unit that measures the wavelength of light and equals 0.00000001 of a centimeter. Blue light has a wavelength of about 4400 angstroms, yellow light 5500 angstroms, and red light 6500 angstroms.
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Science and Technology
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A unit of length equal to one ten-billionth of a meter (10 meters or one-ten-millionth of a millimeter): The angstrom is used to measure the wavelengths of electromagnetic radiation.
It was named after Anders Jonas Ångström (1814-1874), a Swedish astrophysicist.
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Measurements and Mathematics Terms
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Word Entries containing the term:
“symbol”
Amphora: The word and the @ symbol
Greek > Latin: @ two-handled; a vessel with two handles or ears; a pitcher or vase unit.
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Units of Special Compositions, Topics, or Subjects That Provide Special Information
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A unit for measuring the reaction of optical materials to stress: Brewster is defined in terms of the slowing down of light passing through the material when it is stretched or compressed.
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Measurements and Mathematics Terms
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An SI unit of luminous intensity: The candela replaced the old units of candle and standard candle.
Candela measures the brightness of a light itself rather than the amount of light falling on an object, which iC called "illuminance" and measured in "lux".
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Measurements and Mathematics Terms
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A metric unit of length equal to one hundredth of a meter: Joe measured his son's height that turned out to be 70 centimeters.
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Measurements and Mathematics Terms
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