The second is common to both systems.
The meter, kilogram, second, ampere, kelvin, candela, and mole all make up the international system of units. The United States does not follow the metric system.
Systeme Internationale (SI)
The foot, yard, mile, gallon, quart, pound and fluid ounce are examples of units of measurement in the United States customary units system. Examples of metric units of measurement include the meter, kilometer and gram.
Of all countries in the world that has an officially established system of measurement, only Burma/Myanmar, Liberia and the United States do not use the International System of Units (SI). The United States use Imperial units and U.S customary units. That is not to say that SI is not in use in the U.S. The customary units are nowadays defined from SI units. And the National Institute of Standards and Technology uses it. To answer your question: the metrication of the United States is gradual and there is no fixed date where you can say that the US adopted SI. http://en.wikipedia.org/wiki/Metrication_in_the_United_States
Measuring. Most of the world use the metric system. Only three countries in the world still have not imposed the metric system as norm; the United States, Liberia and Myanmar. Globally, metric rulers rule.
All scientists measure in metric units. Scroll down to related links and look at "THE UNITED STATES AND THE METRIC SYSTEM".
The meter, kilogram, second, ampere, kelvin, candela, and mole all make up the international system of units. The United States does not follow the metric system.
The meter, kilogram, second, ampere, kelvin, candela, and mole all make up the international system of units. The United States does not follow the metric system.
Usually people use the metric system, some (like people of the United States) use the English system.
The international system of units is practically legal in all the countries; but some countries as United States, United Kingdom and the old colonies of US and UK refuse this system.
Actually the rest of the world uses the metric system, the United States are the only ones who have not changed. There is not particular reason besides that the rest of the world uses it.
Systeme Internationale (SI)
They should start using ONLY metric units. It is high time that the United States starts using international units.
What metric unit would you use to measure a computer keyboard
The foot, yard, mile, gallon, quart, pound and fluid ounce are examples of units of measurement in the United States customary units system. Examples of metric units of measurement include the meter, kilometer and gram.
Of all countries in the world that has an officially established system of measurement, only Burma/Myanmar, Liberia and the United States do not use the International System of Units (SI). The United States use Imperial units and U.S customary units. That is not to say that SI is not in use in the U.S. The customary units are nowadays defined from SI units. And the National Institute of Standards and Technology uses it. To answer your question: the metrication of the United States is gradual and there is no fixed date where you can say that the US adopted SI. http://en.wikipedia.org/wiki/Metrication_in_the_United_States
In 1975, the United States passed the Metric Conversion Act. The legislation was meant to slowly transition its units of measurement from feet and pounds to meters and kilograms, bringing the US up to speed with the rest of the world. There was only one issue: the law was completely voluntary.