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Some Observation On Black Hole

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  After or till 1960 there was only one topic in every scientist's mind,i.e., the black hole. Before 1960 or in 1920 to 1930, the scientists were afraid about that the theory which is given by them about black hole may be proved wrong and their career may be end but since 1960 they were as much as confident that all the scientists were calculating about it or analyzing about it. In this blog we also read about the contribution of greatest scientist Stephen Hawking. Stephen Hawking In 1960 when all the scientists were doing observation about the black hole, there were some proposals come. Using relativity theory a group of physicists proposed that the  black hole should be in a spherical shape but that can only be possible when the star is perfectly spherical, some of the scientists understood that thing but some of them were not. But not all the stars are spherical in shape and this can't be possible and it can't be a black hole. Again another group of physicists proposed ...
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Death of Sun

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    In between 1920 and 1930 people thought that when a star died, either it is a sun or a star, it becomes a white dwarf. There is a pair of Sirius in the universe that are Sirius A and Sirius B, which are the two stars and one of the star is a white dwarf.  But when scientists studied it, they found that the density of white dwarf, Sirius B, is millions time greater than its own sun. Now there is a thought in our mind that why that white dwarf is not turning into a black hole? or, why it doesn't pull it's sun towards it?  Then some scientists starts to study it, that was the time to arise of quantum mechanics, which says us that, if we take any two electron then they cannot in the same position, same size and doesn't have same properties in other words any two electrons cannot be twins.   Just imagine that there is a sun and its density is increasing and increasing due to putting mass in it and the particles will come close to each other. Then it will happen t...
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Black Hole

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   Black hole is a thing which attract everything of the universe which is nearest to it and engulf the thing inside it.         If we throw a thing upside then it will come back to the downward, this happens due to the gravitational force of the earth. If we have to throw the thing out of the gravitational pool of the earth than we have to give some energy and velocity to the thing, suppose we are standing in an open field and we threw the thing with some energy and velocity through which the thing can go out of the earth's gravitational pool and that velocity is called escape velocity .        Now the question arises ,i.e., Whom does the  escape velocity depends on? ANS- Escape velocity depends upon the mass of the earth and size of the  earth.    And we know that moon is smaller than earth on behalf of size, so the escape velocity of moon is lesser than earth that is why there is no atmosphere because the gases of ...
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Science and War

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  For a number of centuries science kept itself aloof from warfare. It was not until the Chinese invented the gun-powder that science became an active and powerful associate of war. It is curious that the gun-powder was invented for a very innocent and harmless purpose to be used in firecrackers. The evil nature of man, however, soon began to misuse the gun-powder for destructive purposes. And in sheer disgust we speak ill of science for all those acts of cruelty. Gun powder     Endowed with tremendous power modern science is yoked to the chariots of war. It is bound to annihilate life on earth. It is very intriguing question whether advancing science is the cause of world devastating war or wars are the cause of the advancement of science.    Modern wars are being fought with scientific weapons like tanks, aeroplanes, guns, bombs, missiles and rockets, etc. The warriors are simply media for the application of the scientist’s inventions. Igneous scienti...
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History of Tesla

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    The tesla company is also known as Tesla motors. It was founded in 2003 by Martin Eberhard and Marc Tarpenning and was name after Nikola Tesla, an American inventor.      Areas of involvement :  Automobile, Automotive industry, Electric automobile, Manufacturing Roadster.    Related People : Elon Musk, Martin Eberhard, Marc Tarpenning.          This company was formed to develop an electric sports car. Tesla’s chief executive officer (CEO) was Eberhard and Tarpenning was its chief financial officer (CFO). The company obtained funds from variety of sources, mainly the PayPal cofounder Elon Musk, who contributed more than $30 million to the new venture and served as chairman of the company, beginning in 2004.                                               First car of Tesla in 2008     The...
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Why is the sky blue

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 When sunlight enters to the atmosphere of earth, they get scattered in the dust particles and gases. We know that the particles are able to scatter light of shorter wavelength of blue much more than colors of other wavelengths like red.     Hence the scattered light of of blue color so the sky looks blue.
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Crypto Currency

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  A crypto currency is a digital asset designed to work as a medium of exchange wherein individual coin ownership records are stored I a ledger existing in a form of computerized database using strong cryptography to secure transaction records, to control the additional coins, and to verify the transfer of coin ownership. Cryptocurrency does not exist in physical in physical form (like paper money) and is typical not issued by a central authority. Cryptocurrencies typically use decentralized control as opposed to a central bank digital currency (CBDC).                                                                                                                            ...
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