Dictionary

angstrom

noun ang·strom \ˈaŋ-strəm also ˈŋ-\

Definition of ANGSTROM

:  a unit of length equal to one ten-billionth of a meter

Origin of ANGSTROM

Anders J. Ångström
First Known Use: 1892

Ångström

biographical name Ång·ström \ˈaŋ-strəm, ˈŋ-\

Definition of ÅNGSTRÖM

Anders Jonas 1814–1874 Swed. physicist

angstrom

noun ang·strom \ˈaŋ-strəm also ˈŋ-\   (Medical Dictionary)

Medical Definition of ANGSTROM

:  a unit of length equal to one ten-billionth of a meter

Biographical Note for ANGSTROM

Ångström, Anders Jonas (1814–1874), Swedish astronomer and physicist. One of the early formulators of the science of modern spectroscopy, Ångström wrote 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 in units 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 of the aurora borealis.

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