Aspects of this topic are discussed in the following places at Britannica.
in Washington, D.C., an official source, with the U.S. National Institute of Standards and Technology (NIST; formerly the National Bureau of Standards), for standard time in the United States. The positional measurement of celestial objects for purposes of timekeeping and navigation has been the main work of the observatory since its beginning. In 1833 the first small observatory building was...
...century, pressure grew to enlarge the role of the Office of Standard Weights and Measures, which, by Act of Congress effective July 1, 1901, became the National Bureau of Standards (since 1988 the National Institute of Standards and Technology), part of the Commerce Department. Its functions, as defined by the Act of 1901, included, besides the construction of physical standards and...
Precise values of physical constants are determined at various laboratories throughout the world, such as the U.S. National Institute of Standards and Technology (NIST; formerly the National Bureau of Standards), and are refined as experimental methods and techniques are improved.
Link to this article and share the full text with the readers of your Web site or blog-post.
If you think a reference to this article on "National Institute of Standards and Technology" will enhance your Web site,
blog-post, or any other web-content, then feel free to link to this article,
and your readers will gain full access to the full article, even if they do not subscribe to our service.
You may want to use the HTML code fragment provided below.
We welcome your comments. Any revisions or updates suggested for this article will be reviewed by our editorial staff. Contact us here.
Regular users of Britannica may notice that this comments feature is less robust than in the past. This is only temporary, while we make the transition to a dramatically new and richer site. The functionality of the system will be restored soon.