Introduction to Physics
Definition:-
“The
branch of chemistry which deals with the study of matter, energy and their
interaction is called Physics.”
In other words, we can also say that in physics, we study
about how a machine works, how everything in the universe is kept in orbit and
how everything we see, came into existence.
Importance:-
The importance
of physics lies in the fact that everything we see functioning is due to some
principle of physics. The car washing centers use hydraulic press which works
on the principle of Pascal’s Law. Similarly,
some other examples can also be found in the working of other machines.
Branches of Physics:-
1) Mechanics:-
“The
branch of physics which deals with the study of motion of objects, its causes
and effects is called Mechanics.”
2) Heat:-
“The
branch of physics with the study of heat, modes of transfer and effects of heat
is called Heat.”
3) Light:-
“The
branch of physics which deals with the physical properties of light, working
and use of optical instrument is called Light.”
4) Sound:-
“The
branch of physics which deals with study of physical properties of sound, their
production and application is called Sound.”
5) Electricity:-
“The
branch of physics which deals with the study of electric current and their
properties is called Electricity.”
6) Magnetism:-
“The
branch of physics which deals with the study of properties of magnetism is
called Magnetism.”
7) Atomic Physics:-
“The
branch of physics which deals with the study of atoms and their structure is
called Atomic physics.”
8) Nuclear Physics:-
“The
branch of physics which deals with the study of behavior of nuclei is called Nuclear
physics.”
9) Plasma Physics:-
“The
branch of physics which deals with the study of fourth state of matter, i.e.,
plasma is called Plasma physics.”
10) Geophysics:-
“The
branch of Physics which deals with the study of internal structure of earth is
called Geophysics.”
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