angstrom unit

ang·strom or ång·strom   (āng'strəm)    n.   Abbr. A or Å or angst A unit of length equal to one hundred-millionth (10-8) of a centimeter, used especially to specify radiation wavelengths. Also called angstrom unit. See Table at measurement. [After Anders Jonas Ångström.]

angstrom 

Main Entry: ang·strom
Pronunciation: 'a[ng]-str&m also 'o[ng]-
Function: noun
: a unit of length equal to one ten-billionth of a meter
Ångström, Anders Jonas (1814–1874) Swedish astronomer and physicist. One of the early formulators of the science of modern spectroscopy, Ångströmwrote extensively on terrestrial magnetism, the conduction of heat, and especially spectroscopy. He published a monumental map of the normal solar spectrum that expressed the length of light waves inunits of one ten-millionth of a millimeter, a unit of length now known as the angstrom. He discovered that hydrogen is present in the sun's atmosphere, and he was the first to examine the spectrum ofthe aurora borealis.

angstrom ang·strom or ång·strom (āng'strəm)
n.
Abbr. A, Å, angst
A unit of length equal to one hundred millionth (10-⁸) of a centimeter, used especially to specify radiation wavelengths.

Ångström   (āng'strəm)  Pronunciation Key  Swedish physicist and astronomer who pioneered the use of the spectroscope in the analysis of radiation. By studying the spectrum of visible light given off by the Sun, Ångström discovered that there is hydrogen in the Sun's atmosphere. The angstrom unit of measurement is named for him.