That means that if two different scientists use SI units, they will use the SAME definition of the units, even if they live in different countries. In contrast, if they use "pounds" for example, this isn't the case, since different countries may use different definitions of pounds.
The metric system has not been 'renamed' SI. SI is simply the latest standardised version of the metric system.Previous standardised versions include the cgsA(centimetre, gram, second, Ampere) system, and the mksA(metre, kilogram, second, Ampere) system. Metric units (such as calories, litres, ergs, etc.) used in these systems are not used in SI.
SI stands for System Internationale. It allows for standardised units for certain measurements that can be understood all over the world. Whereas stones, pounds and ounces were used to weigh everything in Britain, the SI kg is coming into force. SI units are essential for science. For example, in chemistry, we wouldn't dream of using the Fahrenheit scale for measuring temperature. Either Celsius or the SI Kelvin are used instead.
In SI units, that would be the Newton.In SI units, that would be the Newton.In SI units, that would be the Newton.In SI units, that would be the Newton.
SI and metric are the same units.
International System of Units (SI)
The principal SI units used to derive all other SI units are the base SI units. These are the units for physical quantities such as length, time, mass, electric current, temperature, amount of substance, and luminous intensity.
most of the world does SI so more people can understand with it in SI units
most of the world does SI so more people can understand with it in SI units
SI units are more accurate than English system units
When SI units combine, they create derived SI units that are used to express physical quantities. These derived units are formed by multiplying or dividing the base SI units. Examples include the Newton (kg*m/s^2) for force and the Pascal (N/m^2) for pressure.
Si and metric are the same thing. SI was a redefinition of metric in 1960.
"SI", from the French "Systeme Internationale".