Weights & Measures


QC 91 Special Systems. Metric System. International System (SI). General Works, Treaties, and Textbooks

Names and Symbols of SI Units

Names and Symbols of SI Units is a service of Photobiology Online, a WWW site which details developments and research in "...the branch of biological science which studies the interactions of light with living organisms." All material within this site comes from the journal, Photochemistry and Photobiology, a publication of the European and American Societies for Photobiology.
The site's main page is divided into three sections. Each section denotes physical quantity symbols and names of units for those topics within its respective subject area. The first group, "Basic Units," reveals this criteria for: length, mass, time, electric current, temperature, luminous intensity, and amount of substance. The "Derived Units" section features these same criteria, describing forty-three topics, among which are: area, volume, frequency, density, speed, acceleration, force, rad/s, pressure, radiant flux, voltage, electric capacitance, inductance, wave number, and entropy. The final section, "Supplementary Units," features plane angle and solid angle, described in terms of the aforementioned criteria.
At the bottom of the site's main page is a link to the WWW site, Photobiology Online. The site is sponsored by the European and American Societies for Photobiology; the University of Kansas Medical Center; Kansas City, Kansas.
To Search:
Browse through site's listings.

QC 100.A2A Standards (General). Governmental Standardization Bureaus. General Works, Treatises, and Textbooks

Journal of Physical and Chemical Reference Data

Journal of Physical and Chemical Reference Data, a publication of the American Institute of Physics is detailed in this site, sponsored by the American Institute of Physics (AIP), an organization begun "...for the purpose of promoting the advancement and diffusion of the knowledge of physics and its application to human welfare." The site is a compilation of available issues of the publication, which are listed chronologically, beginning with the most recent issue. No actual texts are open for viewing within the site; users should seek ordering and subscription information through the applicable link at the top of the site's main page.
Each issue listing features the volume and issue numbers, along with the journal's individual release date. Users should select an issue of interest; a listing of articles is then displayed, showing the texts, in their order of appearance within the periodical. Each article's record includes: (1) the title; (2) name(s) of author (initials, last name); (3) the page numbers where the article is located within the issue; and (4) a designation (via an icon) noting whether the text is available for ordering. Users should scroll to view site listings and issue listings.
At the bottom of the site's main page are three major links. The first gives access to the AIP homepage, for further information. The second opens the "Titles in Physics" homepage, a service which allows users to search 47 AIP society journals for topics of interest. The last link, "Journal List," accesses a comprehensive listing of all AIP journals. The site is maintained by the American Institute of Physics; New York.
To Search:
Select issue of interest from site's main page; then scan table of contents. Ordering and pricing information found via top link within site page.

NIST WWW Home Page

The NIST WWW Home Page is the main Internet area for the National Institute of Standards and Technology (NIST), which was established by the United States Congress to "...assist industry in the development of technology...needed to improve product quality, to modernize manufacturing processes, to ensure product reliability...and to facilitate rapid commercialization...of products based on new scientific discoveries." NIST's primary mission is to "...promote U.S. economic growth by working with industry to develop and apply technology, measurements, and standards."
Within the site's main page, the user will find nine major site links noted with image links and textual links, which also provide information on data contained therein. The "general information" division offers a site introduction, site maps and tour information, conferences information, and employment opportunities with NIST. "News" provides details on press releases, newsletters, and announcements. "Programs" offers information on major activities and links to NIST laboratories. "Products and services" reveals information on reference materials, standards, and calibrations. "Gallery" offers images of NIST programs, sites, and research.
"Staff directory" provides an NIST staff listing, offering phone, fax, and e-mail information. "Search" operates as the site's search engine, allowing for searching by keyword, activity, or organizational unit. "FAQ's" offers the most requested questions, with their respective answers. Lastly, "Web links" provides WWW access to other organizations giving scientific standards information. To search the site, a user should select the "search" link from the main page and then specify a search method. A keyword search offers a query page which solely searches the NIST site. Searching the Technical Activities Database also offers a query page and searches the NIST Technical Index. An organizational chart search allows a user to select a portion of a displayed chart to then be linked to that respective organization's WWW site. In the case of the database search, resulting matches will offer a listing of organizational units. Selecting a unit name then reveals its complete record: (1) name; (2) group; (3) division; (4) organization; (5) e-mail address; (6) location; (7) phone number; (8) keywords; and (9) functional statement (summary of research and activities.)
An added feature of the site are images on the homepage which reveal information on NIST research programs in: (1) graphic modeling; (2) SEM retrofit; (3) atom lithography; (4) finding flaws in solar energy films; and (5) materials theory. The site is sponsored by the National Institute of Standards and Technology; Boulder, Colorado.
To Search:
Select link of interest from site's main page. Follow onscreen links to reach desired information.