[Trying to blow the balloon]
[Giggles]
Is this balloon also with a hole? [says to himself]
In general, we use balloons many times in our daily lives
In case of teachers day in schools
we would be sticking the blown balloons all over the class
Similarly for students day
Similarly for annual day in schools
Similarly in colleges,
Open day
farewell day
and in such blissful days
In order to create a good mood
In order to create a happy mood
we would be suing and sticking the balloons in the halls
Today in this video, we are going to perform a small experiment with these balloons
Before that,we shall see
the various ways in which these balloons are used
Another voice: Would fill it up with air and make it fly
Okay!
Another voice: Would fill it up with water and make it fall
mm
Another voice: Would fill it up with air and color powders and make it burst
Okay!
Are there any other ways to use these?
In case if you know them,
drop them in the comment section below without fail
We can also be aware of that
Okay! We shall see a small introduction for our experiment
What is meant by water flow?
If we pour a glass of water on the ground
the water will spread/move all over the floor
This action of water moving is what we call water flow
If a solid substance moves,
it will be called motion
Whereas if a liquid or a gaseous substance moves,
it will be called flow
There are two types of flow in total
One of them is laminar flow
the other is turbulent flow
This laminar flow
we can see only at a very few occasions in our daily life
Meanwhile this turbulent flow
we can see at many of the occasions
What is meant by laminar flow?
What is meant by turbulent flow?
Before I explaining them to you
At the end of this experiment, yourselves
will be able to understand the laminar and turbulent flows on your own
Okay!
Before that
we shall look into the result of this experiment with balloons
Laminar flow will be seen
which means we are going to create a laminar flow in our homes using balloons
Shall we start the experiment
[background sound plays]
The aim of this experiment is
a situation  in which we can see flowing water to be frozen will be created
But the water is not frozen in fact
Our eyes perceive it to be frozen
But the water will be flowing in real
This type of flow is what we name laminar flow
The necessary items that are required for this experiment are
4 to 5 balloons
a tape to stick on the balloon
and a knife in order to pierce it
The main thing required in this is water. Isn't it?
So, water is also required
we shall fill the balloon with water
shall be filled to a moderate size
Because if it is too big, it will burst
If it is too small, the water in it will not be adequate
Hence, we shall fill water in the balloon to a medium size
After filling it, a knot should be made at the open end of the balloon
In case it is hard to make a knot,
This sort of thing will be sold in the stationary shops
You can buy them and tie a knot easily
This balloon shall not be kept in a flat surface
This balloon shall be kept in a medium flat surface
If it is kept in a moderately rough surface
hence the rough surface will not make the balloon flow
This balloon shall be placed
Stick the tape as shown
Stick it in a box shape
In case if we fail to stick the tape
the balloon might burst as a whole like this
So, the experiment might fail
And hence we are sticking this tape
if we let it out by the usual end of the balloon
the experiment might fail
Instead of the tape shown,
If you stick it using the normal household cello tape
the cello tape will not stick to the balloon properly as shown in this video
the gap will gradually enlarge and burst
So, this sort of tapes will be available in the electrical shops
this costs around 15 rupees
and will be very much useful for this experiment if you buy it
Using the knife, we have
If we pierce exactly at the gap between the cello tapes
water will flow out
Instead of placing the surface with hole vertically
only if we place it slantingly
we can see the laminar flow easily
So we shall now tilt it a bit
Okay!we now can see the water nearest to the balloon appear to be frozen
But
As we gradually we move away from the balloon
the flow changes into turbulent
which is it is not flowing evenly
not appears to be frozen
we can clearly see that it is moving
we shall zoom it further
wow!
you can now it see very clearly
The focus in the phone is only up to a small extent
As I myself piercing the balloon and shooting it simultaneously
I can not give you with that much clarity with the phone
And so it appears to be slightly in out of focus
But to see in real, it appears to be clearly and exactly in frozen state
Appears to be splendid for viewing
Okay! Now with another balloon
but this time surrounded by some people for helping
I hope this time i can shoot it with a better focus
Let us now see what will happen
Now, we have pierced it
The water is flowing out as usual
While viewing through this camera
we can see the nature of flow of water
In the starting, it appears to be frozen
and changes into turbulent gradually
which means in starting, it is laminar
and changes to turbulent gradually
If we disturb with one hand
we can clearly see how beautiful it appears to be frozen while flowing
Is it frozen for real?
Definitely not
It is flowing
But it seems to be frozen for our eyes
This flow is what we call laminar flow
Okay! I have mentioned already
The nature of the flow of the water is
First, it starts to be a laminar one
and gradually away from the hole in the balloon
it changes to turbulent
Laminar means
a smooth flow
All the molecules in the water
flowing smoothly in one path with no disturbance
is what we call as laminar flow
Whereas turbulent means
all the molecules in the water
does not flow in one straight line smoothly
but with a commotion between one another
and moves randomly
This sort of flow is what we call
turbulent
Hence during turbulent flow of water
we seen a shaky random flow
Okay!
I hope you all have understand about laminar and turbulent flows
try this in your homes too if you can
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Shall meet in the next video
Comment the mistake if you found
I am not sure about the clarity in this video
but this appears to be fantastic when seen with naked eyes
will be amazed at the possibility of doing such thing with the balloons
In case of any science experiments in our schools
we can even make use of this too
But cannot be used inside the class
But if used outside the class
will get good views
