Colour of the Sun at Sunrise and Sunset Video Lecture - Class 10

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hello everyone and welcome back to our
universe today you will be answering the
question why is the Sun set red the
lights that we see looks white but if
you look at it for a prism you can
actually see that the light is divided
up into many colors these are the colors
of the light spectrum and they are the
same colors that we see within a rainbow
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we can see all of the colors of red
orange yellow blue and violet with the
exception of indigo with our eyes this
is very important because everything
that we can look at seems to have color
including the sunset each color that we
can see has a certain wavelength the
longer way vents are found in colors
such as red green yellow and orange and
the shorter wavelengths are in the blue
colors when light comes from the Sun to
the earth it comes in a straight line
and this has all of the colors of the
spectrum and each color is traveling at
its own wavelength
Sun could be slow and some could be fast
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by the time that light reaches the
atmosphere of Earth it may encounter
water molecules dust or ice since the
light waves are incredibly small and I
mean smaller than one millionth of a
meter the light waves will interact with
even the tiniest gas molecules in the
air then they begin to bounce off the
parts course and this bouncing process
is called scattering and where they go
depends on how large the molecule was
compared to the wavelength size and
small particles compared to their
wavelength will scratch a blue light
more strongly than red light since the
Earth's atmosphere is mainly made up of
oxygen and nitrogen the Blues will
scatter sunlight in more directions than
the red and this creates the blue sky
that we see the red light waves have the
least amount of scattering and this is
due to the interaction with the gas
molecules so when you see a sunrise or a
sunset the sunlight is actually
travelling in a longer path through the
atmosphere and then finally to your eyes
where you can see it the blue light has
almost been completely removed but that
still leaves the red and yellow light
this is why when you see a sunset you're
actually seeing the colors of reds
oranges and yellows
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and if there are any clouds in the sky
they will reflect these colors the
colors are being reflected from the
water and the ice particles in the
clouds and the molecules also absorb the
wavelength colors as well so when you
look up at a sunset you just realized
that there's no more blue left and the
Sun has to go for a lot of atmosphere to
actually show off the new colors of red
orange and yellow there are actually a
lot more colors but humans can't
actually see them there are specialized
equipment that scientists use to
actually see these colors and these help
scientists in various scientific studies
so in conclusion you can probably say
that the sky is not blue or red you can
actually say it's white until it
actually hits something within the
atmosphere that changes its color so I
hope that's given you a great insight
into why the sky is red or orange or
yellow when the Sun rises or sets and
also I've done another video on this
channel of why the sky is blue
that explains a little bit more on the
Rayleigh scattering and as always if
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watching
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