Learn How to Make a Rainbow at Home - Kids Science Experiments
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Hi! My name is Niranjan
and welcome to another episode of "Champak's IQ"
where we teach you
simple science experiments
that you can try at home.
Now, depending on where you live
it's either raining or its not
but irrespective of that
the best part about the rain
is the Rainbow.
But because it's kinda rare
you're not going to able to see much of it.
But I am going to teach you how to make it
at home, so you can see it whenever
you want.
So, what are we gonna need for this?
Well! We are gonna need some
water, a bowl, a mirror, and a phone.
Well.. rarely the tiny LED that's on the back of this phone.
So, let's get started.
So we start off with a little bit of water
in a bowl.
Now the idea is to fill up,
fill it up almost to the top,
but leave just a little bit
and I will explain why.
Al right! So we have enough water
Now we take a mirror
because mine is in a "L" shape mirror
I am not gonna bother tapping it on
but I would recommend that you do if you don't have
a "L" shaped mirror.
Place at an angle in the water
now, half the mirror should be under water
this is where the magic happens.
So now, when I take my torch
and shine it into the half of the mirror
that's under water.
And on this card that I have placed here
you get the rainbow.
How cool is that.
Now if you can't see the rainbow really clear
you should try turning the lights down
or may be make sure that no
light falls on the card that you are capturing it on.
Now let's move on to what's happening here.
Now, before we begin
let's establish a visible light
white light is actually made up of
seven colours.
So, when we shine light on the part of the mirror
that's under water
the light bends as it moves from air to water.
But because the components of white
light travels in different wave lengths
they bend to different degrees
these colours are reflected by the mirror
which you catch on the piece of the card.
Now, light travel in waves.
Now, a wave is an oscillation
or a disturbance that travels through space.
This is why we can't see the
other components that light is made up of.
We can't see components like
Ultraviolet or Infrared
because the wave lengths are either too long
or too short.
Now, a wave is made up of
peaks and troughs
and the distance between the peaks and troughs
is the wave length.
And it's not just light that travels
in waves, sound travels in waves too.
So do radio waves, micro waves and
whole bunch of other things
including me
because I am going to wave good bye
and I am going to ask you to try this at home
and leave your thoughts in the comments below.
My name is Niranjan.
Thank You so much for watching this episode of Champak's IQ.