In this video we will talk about
the four fundamental forces
this video is part of a series of my channel
named "Unified Field Theory"
which is the one and only series
on Unified field
on youtube in hindi
If you haven't watched the first part
which was the introduction to
Unified field theory
you must watch it first
link is provided in description box
as we proceed, you will get to
know new things
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First, let's see today's Question Time
When was GENEral theory of relativity published?
Stop the video
and comment your answer in comment box
Where there is nothing on Earth,
there is gravity
also where there is everything
then also gravity is there
It is a force which pulls you down
Probably, due to which we are able to
walk firmly
2nd Fundamental force is
Electromagnetism
When you keep books on a table
why don't the books just smash inside
the table
as we know that
there is lots of empty space
in atom
of the books as well as of table
this is not possible due to
a force called Electro magnetic force
This force binds a matter
and dosn't let it split
3rd Fundamental force is
Strong nuclear  force
in a atom there are protons and neutrons
but, how can in a atom many protons
be kept as there will be a repulsive force
this is posiible because there
is a Strong nuclear force between the protons.
as the repulsive force will try to separate
protons apart
but nuclear force binds them
one more thing that
among the four fundamental forces
only the first two can be felt physically
other two are felt at the subatomic level
one more interesting thing
that Strong nuclear force= Gravity* 10^38
now you can understand
how strong is the
strong nuclear force
4th fundamental force is
Weak nuclear force
it is like strong nuclear force
but it is very weak
it is also felt at subatomic level
when a nucleus of an atom
becomes unstable due to some reason
it starts throws out matter from it's nuceus
say, protons
which is called Radioactivity
weak nuclear force helps in this only
with this Two parts are
completed of Unified field theory
Further we will see some more theories
LIKE, Generall theory of relativity
special theory
and much more
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