Definition of angstrom
: 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.
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Origin and Etymology of angstrom
Anders J. Ångström
First Known Use: 1892See Words from the same year
Definition of Ångström
Anders Jonas 1814–1874 Swedish physicist
Biographical Note for angstrom
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.
Learn More about angstrom
Britannica.com: Encyclopedia article about angstrom
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