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SP 811 designated acceptable, temporary acceptable, and non-acceptable units #2

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ronaldtse opened this issue Feb 2, 2021 · 2 comments
Open

SP 811 designated acceptable, temporary acceptable, and non-acceptable units #2

ronaldtse opened this issue Feb 2, 2021 · 2 comments

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@ronaldtse
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According to SP 811, there are 3 categories of non-SI units relating to use within the SI

Acceptable
Examples: minute, hour, day, liter, metric ton, natural and atomic units

Temporarily acceptable
Examples: nautical mile, knot, ångström

Unacceptable
Examples: erg, dyne, fermi, torr, micron
@ronaldtse
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We have most of these filled in but not 100% covered.

@ronaldtse
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Also, "ångström" clearly requires an i18n approach.

Relevant page from SP 811:
https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-5-units-outside-si

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