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published by the National Physical Laboratory
The NPL is the UK's national measurement institute, established in 1900 to develop and apply accurate measurement standards for science and technology. The NPL conducts international research, provides commercial services in calibration, and maintains a collection of publications and reference materials relating to standard measurement.

Educators will also find fact sheets on topics such as uncertainty in measurement, history of measurement, atomic timekeeping, and background information on basic and derived units. Teachers can freely download posters on mass, length, light, temperature, and more.
Subjects Levels Resource Types
General Physics
- Measurement/Units
= Error
= Units and Dimensional Analysis
- High School
- Middle School
- Lower Undergraduate
- Collection
- Reference Material
= Nonfiction Reference
- Dataset
= Database
Appropriate Courses Categories Ratings
- Physical Science
- Physics First
- Conceptual Physics
- Algebra-based Physics
- AP Physics
- Activity
- New teachers
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Limited free access
A few items are available for purchase, such as the NPL's simulations for educators.
© 2011 National Physical Laboratory, http://www.npl.co.uk/category/235
SI units, accuracy, calibration, derived units, mass, measurement, physical quantities, precision, uncertainty
Record Creator:
Metadata instance created February 23, 2011 by Caroline Hall
Record Updated:
May 22, 2012 by Lyle Barbato
Last Update
when Cataloged:
January 31, 2011
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
(National Physical Laboratory, Middlesex, 2011), WWW Document, (https://www.npl.co.uk/).
National Physical Laboratory (NPL) (National Physical Laboratory, Middlesex, 2011), <https://www.npl.co.uk/>.
APA Format
National Physical Laboratory (NPL). (2011, January 31). Retrieved June 21, 2024, from National Physical Laboratory: https://www.npl.co.uk/
Chicago Format
National Physical Laboratory. National Physical Laboratory (NPL). Middlesex: National Physical Laboratory, January 31, 2011. https://www.npl.co.uk/ (accessed 21 June 2024).
MLA Format
National Physical Laboratory (NPL). Middlesex: National Physical Laboratory, 2011. 31 Jan. 2011. 21 June 2024 <https://www.npl.co.uk/>.
BibTeX Export Format
@misc{ Title = {National Physical Laboratory (NPL)}, Publisher = {National Physical Laboratory}, Volume = {2024}, Number = {21 June 2024}, Month = {January 31, 2011}, Year = {2011} }
Refer Export Format

%T National Physical Laboratory (NPL) %D January 31, 2011 %I National Physical Laboratory %C Middlesex %U https://www.npl.co.uk/ %O text/html

EndNote Export Format

%0 Electronic Source %D January 31, 2011 %T National Physical Laboratory (NPL) %I National Physical Laboratory %V 2024 %N 21 June 2024 %8 January 31, 2011 %9 text/html %U https://www.npl.co.uk/

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Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

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The MLA Style presented is based on information from the MLA FAQ.

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