I believe you are referring to the Ångstrom, a unit of measure invented by Anders Ångstrom (if I remember his first name correctly.
One Ångstrom is equal to 10^-8 cm and is not an official SI unit, but it (like the liter) is tolerated.
Ångstrom was a spectroscopist, involved in measuring wavelengths of lines like are present in the Balmer series. In fact, I believe it was Ångstrom who first determined that there were four (and not three) lines in the visible portion of the Balmer series.
One Ångstrom is equal to 10^-8 cm and is not an official SI unit, but it (like the liter) is tolerated.
Ångstrom was a spectroscopist, involved in measuring wavelengths of lines like are present in the Balmer series. In fact, I believe it was Ångstrom who first determined that there were four (and not three) lines in the visible portion of the Balmer series.
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r. it will have the same title
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An Angstrom is simply a measurement of length defined as 0.1 nanometer or 10^(-10) meter and is used as a matter of convenience (bond lengths are on the order of one to a few Angstroms).
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it's an angstrom, a unit of length equal to 1e-10 meters. chemists often use it to refer to bond length or the distance between atoms or molecules.
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