The units of measure are instruments used to quantify different things, to the extent that the numbers in themselves only allow counting those separable things as units. Not everything that people intend to measure can be separated by units, not even adding the possibility of fractions: it is necessary in certain cases to introduce different measurement patterns.
These units complement the scalar values, and generally constitute one or two words mentioned at the end of the number. Knowing about units of measurement makes it easy to understand what kind of unit is being talked about. However, within what is the measurement of a magnitude there are different expressions, which makes it necessary to conversion process, of which knowledge is sometimes restricted to expert scientists on the subject.
That is why, as far as most of society is concerned, it is common for units of measurement to be presented in only one per area, within the same region: in any case, the multiples of the same unit, which does not constitute two different (grams, milligrams, and kilograms are part of the same unit of measure). When a person who does not know much about units of measurement travels to another place, it is common for him to have confusion in the quantification of the quantities.
However, it has been agreed to introduce a international system of units so that the world has a unique way of measuring certain quantities. It was agreed, then, to draw up a list of seven units of measurement: one for length, one for mass, one for time, one for electric current intensity, one for thermodynamic temperature, one for quantity of substance and one for light intensity.
Twenty examples of units of measurement will be detailed here, highlighting those that are part of the international system of units. For other cases, the relationship established with the international one will be mentioned.
- Meter (measure of length, international system of units)
- Inch (length measurement, where one meter equals 39.37 inches)
- Yard (measure of length, where one meter equals 1.0936 yards)
- Feet (measure of length, where one meter is approximately 3.2708 feet)
- Mile (measure of length, where one meter is 0.00062 miles)
- Kilogram (measure of mass, international system of units)
- Libra (measure of mass, where a kilogram is 2.20462 pounds)
- Stone (measure of mass, with 1 kilogram equal to 0.157473 stone)
- Ounce (measure of mass, where a kilogram is 35.274 ounces)
- Second (measure of time, international system of units)
- Liter (measure of volume, commonly used)
- Centesimal degree (angle measure)
- Radian (angle measure, where 1 centesimal degree is 0.015708 radians)
- US gallon (volume measure, equal to 3.78541 liters)
- Amp (current measurement, international system of units)
- Kelvin (thermodynamic temperature measurement, international system of units)
- Celsius degrees (temperature measure, estimated by Kelvin subtraction - 273.15)
- Fahrenheit degrees (temperature measurement, estimated by the operation [(Kelvin - 273.15) * 1.8] + 32)
- Mol (measure of quantity of substance, international system of units)
- Candle (measure of luminous intensity, international system of units)
