तुम सब हो मेरा

तुम सुबह तुम शाम हो मेरा..
तुम शुरुआत तुम अंत हो मेरा..
तुम जमीं तुम आसमां हो..


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The reason of mirage

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The Science of Mirages We’ve all seen that part in the movie where the weary desert wanderer has been walking for hours and is dying of thirst. Then he happens upon a vast body of water on the horizon. He runs towards the water, it grows closer and closer, until he springs himself into the air only to land back down in the sand and no water in sight. You might think the traveler was hallucinating, but mirages are a naturally-occurring optical illusion. In cartoons, a mirage is often depicted as a peaceful, lush oasis lying in the shade of swaying palm trees, but in reality it is more likely to just look like a pool of water. How do mirages form? Mirages really have nothing to do with water at all. It’s really all about how light travels through air. Normally, light waves from the sun travel straight through the atmosphere to your eye. But, light travels at different speeds through hot air and cold air. Mirages happen when the ground is very hot and the air is cool. The hot ...
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planet nine

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PLANETS Hypothetical Planet X Artist's concept of a hypothetical planet orbiting far from the Sun. Credit: Caltech/R. Hurt (IPAC) Overview Caltech researchers have found mathematical evidence suggesting there may be a "Planet X" deep in the solar system. This hypothetical Neptune-sized planet orbits our Sun in a highly elongated orbit far beyond Pluto. The object, which the researchers have nicknamed "Planet Nine," could have a mass about 10 times that of Earth and orbit about 20 times farther from the Sun on average than Neptune. It may take between 10,000 and 20,000 Earth years to make one full orbit around the Sun. The announcement does not mean there is a new planet in our solar system. The existence of this distant world is only theoretical at this point and no direct observation of the object nicknamed "Planet 9" have been made. The mathematical prediction of a planet could explain the unique orbits of some smaller objects in the Kuiper Belt, a d...
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why does diamond shine???????

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Why does the diamond shine - जानिए हीरा क्यों चमकता है  Diamond  एक nonmetal carbon से बना कठोर और बहुत ही costly  material  है | इसमें काफी shine होता है जिसके कारण यह देखने में भी काफी attractive  होता है लेकिन क्या आपने कभी सोचा है कि diamond  में इतना ज्यादा shine क्यों होता है ? आइये हम आपको बताते हैं | असल में diamond को जितना shiny  आप देखते है यह इतना shiny खदान से निकालने पर नही होता है, इसे खदान से निकालने के बाद कामगारों द्वारा attractive बनाया जाता है, इसे attractive  बनाने के लिए इस पर policing  भी किया जाता है। इस पर पॉलिश इस तरह किया जात है कि सैकड़ों वर्षों तक इसकी shine बनी रहती है, diamond  न ही घिसता है और न इसका स्वरूप बिगड़ता है। हीरा का refractive index  2.47 का होता है, और इसका critical angle 24 डिग्री के लगभग होता है, और जब प्रकाश इसके अंदर enter करता है तो इसमें critical angle कम होने की वजह से इसमें total internal reflection  होता है जिससे हीरा काफी shine करता  है |
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