Changes

In addition to the International System (or in French, ''Système International'', or SI for short), scientists have invented other systems of measurement that include units of time, force, [[energy]], and electric charge. The most popular are the meter-kilogram-second and centimeter-gram-second systems.

In addition to the International System (or in French, ''Système International'', or SI for short), scientists have invented other systems of measurement that include units of time, force, [[energy]], and electric charge. The most popular are the meter-kilogram-second and centimeter-gram-second systems.

Various governing authorities have established conversion ratios to assist people in converting between the metric system and other, more traditional units of measurement. The definitions of US Customary units in the United States is an example of this.  The metric system is more efficient and easier to learn.

Various governing authorities have established conversion ratios to assist people in converting between the metric system and other, more traditional units of measurement. The definitions of US Customary units in the United States is an example of this.   

 

The metric system is more efficient and easier to learn, as units are based on powers of 10 and are better related to each other than with the imperial system.

 

According to [[CIA]]'s World Factbook<ref>[https://www.cia.gov/library/publications/the-world-factbook/appendix/appendix-g.html CIA World Factbook, Appendix G]</ref>, the SI system has been officially adopted in all countries of the world, with an exception of [[Burma]], [[Liberia]] and [[the United States of America]].

== References ==

== References ==