Different Types of System of Units in Measurement

Hello friends, Today we are talk about related to measurement in which we will know about different types of systems of units in measurement. 

Basically, A system of units is divided into two main categories: fundamental units and derived units. The fundamental units are further classified into systems such as SI, FPS, CGS, and MKS, each defining specific fundamental measurements like length, mass, and time.

So without wasting time let’s know step by step different types of systems of units.

What is Measurement?

Measurement is the process of assigning a numerical value to a physical quantity in order to quantify and express its magnitude. It involves comparing the unknown quantity with a known standard, which serves as a reference. The result of a measurement is typically expressed using a specific unit that represents a standardized amount of the measured quantity. Measurements are fundamental in various scientific, industrial, and everyday contexts, providing a basis for communication, comparison, and understanding in fields such as physics, engineering, chemistry, and more.

Different Types of System of Units in Measurement
Different Types of System of Units in Measurement

This fixed predetermined quantity is called the unit.  

System of Units 

Units serve as globally accepted standards for measuring quantities, examples of which include foot, pound, centimeter, gram, second, etc.

Types of System of Units

Fundamental Units

Fundamental units are the basic, independent units used to quantify fundamental physical quantities. These units serve as the foundation for measuring various aspects of the physical world. The fundamental units typically include:

  1. Length:
    • Meter (m)
  2. Mass:
    • Kilogram (kg)
  3. Time:
    • Second (s)
  4. Electric Current:
    • Ampere (A)
  5. Temperature:
    • Kelvin (K)
  6. Amount of Substance:
    • Mole (mol)
  7. Luminous Intensity:
    • Candela (cd)

These fundamental units are chosen to be independent of each other, meaning that none of them can be expressed in terms of the others. They provide the basis for constructing derived units, which represent more complex physical quantities by combining these fundamental units in various ways. The International System of Units (SI) is the most widely used and accepted system incorporating these fundamental units for measurement on a global scale.

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Derived Units

Derived units are formed by combining fundamental units in various ways to express more complex physical quantities. Unlike fundamental units, which represent basic and independent measurements, derived units are combinations of these fundamentals. Some common examples of derived units include:

  1. Velocity:
    • Derived from fundamental units of length and time (meters per second, m/s).
  2. Acceleration:
    • Derived from fundamental units of length and time (meters per second squared, m/s²).
  3. Force:
    • Derived from fundamental units of mass, length, and time (newton, N).
  4. Energy:
    • Derived from fundamental units of mass, length, and time (joule, J).
  5. Power:
    • Derived from fundamental units of energy and time (watt, W).
  6. Pressure:
    • Derived from fundamental units of force and area (pascal, Pa).
  7. Volume:
    • Derived from fundamental units of length (cubic meter, m³).

Derived units allow us to express a wide range of physical quantities with clarity and consistency. The International System of Units (SI) provides a standardized set of derived units, ensuring uniformity in scientific, industrial, and everyday measurements worldwide.

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So here I discussed different types of systems of units in the measurement.

I hope you all enjoy this topic.

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