Units, fundamental quantities and derived quantities. Skip to main content

Highlights

Science: one of the army of our country

⚔️🔬 Science 🔬⚔️         The importance of science is well known today. Science is not just limited branch, it is very wide branch and extend study of the basics of science makes a new branch of science. For example, Biology is branch in which the study of living being occurred,  Chemistry the study of chemical, Microbiology the study of microorganisms, cell biology the study of all types of cell....etc....etc. But science does not seem to be as important as it should be. Now people understand that there is no alternative without science. Every one know that the science is a great career field, this is also a good education field, that's all there is to it. Still, we can say that ' Science is the one of the army of our country '. What is this nonsense....... How is that........ So let to prove this sentence, with evidence.... At first I would like to say that, we can't imagine the world without Science, because Science has given us so much
Post a Comment

Units, fundamental quantities and derived quantities.

What mean by Units......?

Unit is the basic part of the measurement, because without unit we don not measured anything.

Unit:-

The reference standard used for the measurement of a physical quantity is called a Unit.

System of units:-

  1. C.G.S.
  2. M.K.S.
  3. F.P.S.

S.I. units :-

           Use of different system of units became very inconvenient for exchanging scientist information between different parts of the world.
    Hence, in October 1960 at the Eleventh International General Conference of weights and measures, in Paris, a common system of units called  "System International d' Units"  was accepted.
        This system of units called S.I. units consistent of seven fundamental units, two supplementary units and large number of derived units.
    

Units are classified into two  groups   Fundamental units and Derived units.


The seven basic physical quantities:



Length, mass, time, temperature, electric current, luminous intensity and amount of substance which are independent of any other quantities for their measurements are called Fundamental Quantities and their units are called Fundamental Units. 

Fundamental Quantities :-

     "The physical quantities which do not depend on any other physical quantities for their measurements are known as Fundamental Quantities".

Fundamental quantities with S.I. units and symbols.

Fundamental Units :-

  "The unit's used to measure fundamental quantities are called Fundamental Units".
Seven fundamental units.

Derived Quantities :-

       "The physical quantities which depend on one or more fundamental quantities for their measurements are known as Derived Quantities".

Derived units :-

     " The unit's of derived quantities which depend on fundamental units for their measurements are called Derived Units".

Below shows the some examples of derived derived quantities and units.

Derived quantities with S.I. Units.








*Science world*
Labels:

Comments

Post a Comment

Popular posts from this blog

Concepts of atom

In Last article We Define  Atom ,  Molecules  & Nuclei.  And the molecule    Atom and atomic concept is the very interesting part and it's not just interesting but important part for chemistry, physics.    Atom is considered as the basic and fundamental unit of the molecule or elements.    Atom is the important back bone of the chemistry, because no one any chemical compound is made up of without atom. Atom is the basic , fundamental and functional unit of the elements is not wrong.     Atomic model and atomic concept of the atom, Scientists gives verious information and the reality of the atom. For the extra and proper information, some scientists like J.J. thomason, John Dalton, and Rutherford gives the atomic theory, due to which the concept of atom for understanding is very easy. Before the atomic theory, we start the concept related to atom.                *  The Concept Related to Atom * In 1808 , John Dalton performed an his experiment and prove that
1 comment
Read more

Atomic theories

                    * The   Atomic   theories *    The atomic theories are the best successful contribution of the scientists, because it's gives most important information, some properties and the concept of atom.    Before the atomic theory some misunderstanding related to the atoms are created. Scientists find this misunderstanding and solve the all problems related to the atoms by giving the atomic theory to the world. All the concept of the atom are clear with the atomic theory. Dalton atomic theory :-   John Dalton proposed that all matter is                 composed Of small ,Hard,Indivisible particles called "Atom" . Atom of given element are identical and have characteristic mass. Atom combine to form a molecule.                     Thomson atomic theory :-        J.J. Thomson discovered Electron .        According to Thomson, atom consist of                 positively charged sphere with negatively                 char
Post a Comment
Read more