angstrom

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noun ang·strom \ˈaŋ-strəm also ˈȯŋ-\

Definition of angstrom

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

Recent Examples of angstrom from the Web

  • Gaps between the probes measure a mere 100 angstroms – roughly the space occupied by 66 hydrogen molecules – which requires the manufacturing process to be perfect, lest a researcher end up looking at the wrong probe.

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'angstrom'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of angstrom

Anders J. Ångström


Ångström

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

Definition of Ångström

  1. Anders Jonas 1814–1874 Swedish physicist


Medical Dictionary

angstrom

play play
noun ang·strom \ˈaŋ-strəm also ˈȯŋ-\

Medical Definition of angstrom

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

Biographical Note for angstrom

Ångström

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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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