Big Questions ..., A PLATFORM OF KNOWLEDGE Options

[NATURE]

Hi Friends ...

Here we may ask Questions related to Science, Arts, History, Culture, Natural Phenomena and all ...
Just to start with something... Will Any 1 please answer this ???
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How some Animals like Dogs, Cats can see in the Dark ? How can we see some Object ?
Now r u happy Mr. Yaar Mere Ji ? Tell me what makes them able to see in the dark ...
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U may continue this by asking Questions that create a kind of sensation in your mind .....

[NATURE]

THANK U AZGAR JI ... for such a nice Article .... here is a short description that I came to know about :
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1. How can we see ? Isn't it the Light that comes from the Object to our Eyes ?
-----> When photon reflects from an object and falls into our eyes, our eyes sense (Hence we see)
It and transmit into an Electrical signal which is sensed by our brain and thus we feel like seeing.

2. How can some Animals like Cats can see in the Dark ? what's the Main difference ?
-----> Some Animals see because they have more number of rods (some cylindrical cell or something!)
In their eyes which help them to amplify that electrical signal. One more thing, the cats' eyes glow in dark,
That's also because of the rods. But human beings have less number of rods, so not much amplification in
Electrical signal, hence we cannot see in dark properly. They have a special layer of cells at the back of
Their retinas, called the Tapetum Lucidum (Latin for "Bright Carpet"). This shiny layer of cells, acting like
A mirror, reflects light back to the retina's cells.

So in near darkness, a cat's eyes collect what light there is and give the retina a second chance to absorb
Every photon. And domestic cats aren't the only ones with this light-enhancing device. Big cats like tigers
And lions, woodland deer, Ocean-dwelling whales and even your family dog all come equipped with the
"Bright Carpet" feature.
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The Next Question is :

Why it happens that in a Hot Sunny Day, we see the air at a far distance is vibrating like Fire ?

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Dear YAARMERE JI ... I think u know Hindi, that's why u didn't ask about the rest ... So No Rewriting ....