Welcome to Smartindia Student's Blog


hai

hai friends

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fan

iam the big fan of the sachin tendulkar

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why space is black?

You might wonder with all the stars shining, why is space black? The answer is that in space, sunlight or any kind of star light does not have anything from which to bounce off. We see color because light is reflected back to our eyes. Normally if an object can reflect back all light we see the color white. However when we see the different colors we know about it is because only one part of the visible spectrum of light is reflected back to our eyes and the rest is absorbed by the object we are absorbing.
On Earth this phenomenon is why the sky is blue and clouds are white. Each have their unique color because of how light is scattered and reflected by molecules in the air. This does not happen in space. Since space is a perfect vacuum the only thing that can travel through it without a medium is light. Light natural follows a strait path so if it is not reflected by objects like planets and natural satellites it simply “absorbed” by space. However, in this case absorbed means it is not reflected to our eyes.
This also explains why we can see nebulae which should be simply clumps of invisible gas in space. We can’t see the air in front of us, right? The reason for this is that in nebulae and galaxies the gases and dust do reflect the light of the stars near them. So this makes it possible for us to seem them. However if were to enter a nebula the gases would not be as visible as from far off.
In the end, space is black to our perception because there are few molecules of matter that can reflect or scatter light like our atmosphere on Earth. Since light goes in a straight line it seems to be absorbed by the void and vacuum of space. Otherwise space would look similar to the sky on Earth.




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what do matter

you when you leave your school forever and join another?

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who is

your favorite writer?

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what is

the thought that makes you overjoyed with watering mouths and feel with delicious scents around you?

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Hooray!

I has just read out 3 famous books, 3 of them - ( Man eater of Malgudi, Swami and friends, Grandmother's tale ) are wrote by the famous writer, R.K.NARAYAN ( I has got inspired by his imaginary village MALGUDI ) , and the other is the Famous work of  PAULO COELHO ( The Alchemist ), a Brazilian writer. I got these precious books from my school library.Ithank it a lot now.

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what about Gandhi?

What do you guys think of Ghandhiji - the father of our nation, India?

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smile

Dont cry because its over.Smile because it happened.

                                                                                  -Dr.Suess

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smile

Peace begins with a smile.

                                            -Mother Theresa

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FRIENDS

what is your best friend name

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face book

you like facebook

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