Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos

measurement summary

verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Share
Share to social media
URL
https://www.britannica.com/summary/measurement
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

External Websites
Written and fact-checked by
The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
The Editors of Encyclopaedia Britannica
Below is the article summary. For the full article, see measurement.
Ramadan ifṭār meal
Ramadan Summary
Ramadan, the ninth month of the Muslim calendar and the holy month of fasting in Islam. During the month of Ramadan Muslims fast from dawn until dusk, and they are permitted to eat and drink only before sunrise and after sunset. Observing the daily fast for Ramadan comprises one of the Five Pillars
Understanding the International System of Units in science
International System of Units Summary
International System of Units (SI), international decimal system of weights and measures derived from and extending the metric system of units. Adopted by the 11th General Conference on Weights and Measures (CGPM) in 1960, it is abbreviated SI in all languages. Rapid advances in science and
default image
astronomical unit Summary
Astronomical unit (AU, or au), a unit of length effectively equal to the average, or mean, distance between Earth and the Sun, defined as 149,597,870.7 km (92,955,807.3 miles). Alternately, it can be considered the length of the semimajor axis—i.e., the length of half of the maximum diameter—of
Infographic comparing metric vs imperial systems: weight, volume, temperature, car speeds, length, height, track distances, and global usage.
metric system Summary
Metric system, international decimal system of weights and measures, based on the metre for length and the kilogram for mass, that was adopted in France in 1795 and is now used officially in almost all countries. The French Revolution of 1789 provided an opportunity to pursue the frequently