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mayankdevnani

  • 2 years ago

My first TUTORIAL on BLACK HOLE-

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  1. mayankdevnani
    • 2 years ago
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    \[\Huge{\bf{\color{blue}{Whatis }\color{red}{Blackhole--}}}\] \[\Large{\bf{\color{black}{What is }\color{red}{Blackhole==}}}\] A black hole is defined by the escape velocity that would have to be attained to escape from the gravitational pull exerted upon an object. For example, the escape velocity of earth is equal to 11 km/s. Anything that wants to escape earth's gravitational pull must go at least 11 km/s, no matter what the thing is — a rocket ship or a baseball. The escape velocity of an object depends on how compact it is; that is, the ratio of its mass to radius. A black hole is an object so compact that, within a certain distance of it, even the speed of light is not fast enough to escape. A black hole itself is invisible because no light can escape from it. In fact, when black holes were first hypothesized they were called "invisible stars." If black holes are invisible, how do we know they exist? This is exactly why it is so difficult to find a black hole in space! However, a black hole can be found indirectly by observing its effect on the stars and gas close to it. For example, consider a double-star system in which the stars are very close. If one of the stars explodes as a supernova and creates a black hole, gas and dust from the companion star might be pulled toward the black hole if the companion wanders too close. In that case, the gas and dust are pulled toward the black hole and begin to orbit around the event horizon and then orbit the black hole. The gas becomes heavily compressed and the friction that develops among the atoms converts the kinetic energy of the gas and dust into heat, and x-rays are emitted. Using the radiation coming from the orbiting material, scientists can measure its heat and speed. From the motion and heat of the circulating matter, we can infer the presence of a black hole. The hot matter swirling near the event horizon of a black hole is called an accretion disk. \[\Large{\bf{\color{pink}{What does a}\color{green}{black hole look like?}}}\] John Wheeler, a prominent theorist, compared observing these double-star systems to watching women in white dresses dancing with men in black tuxedos within a dimly lit ballroom. You see only the women, but you could predict the existence of their invisible partners because of the women's' spinning and whirling motions around a central axis. Searching for stars whose motions are influenced by invisible partners is one way in which astronomers search for possible black holes.

  2. mayankdevnani
    • 2 years ago
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    @ajprincess @JOYAL @jiteshmeghwal9 @thivitaa @rahul_rajawat have a look:)

  3. mayankdevnani
    • 2 years ago
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    @ganeshie8 @hba @moongazer @Musicdude123 @Miyuru plz

  4. mayankdevnani
    • 2 years ago
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    @scarydoor @shahzadjalbani @Shadowys @SheldonEinstein have a look:)

  5. rahul_rajawat
    • 2 years ago
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    thanks the information is realy nice dear... :)

  6. mayankdevnani
    • 2 years ago
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    welcome

  7. jiteshmeghwal9
    • 2 years ago
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    ``` \[\Huge{\color{red}{\text{What \space is \space Black \space hole ?? }}}\]

  8. jiteshmeghwal9
    • 2 years ago
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    It ill give u gap

  9. mayankdevnani
    • 2 years ago
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    \[\Huge{\color{red}{\text{What \space is \space Black \space hole ?? }}}\]

  10. jiteshmeghwal9
    • 2 years ago
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    Well, really good concept about black hole :)

  11. mayankdevnani
    • 2 years ago
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    hey!!! don't works @jiteshmeghwal9

  12. Miyuru
    • 2 years ago
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    Wow Great tutorial. I didn't knew these facts... Thanks very much for sharing.. And for the space you don't actually need to type space.. :)

  13. mayankdevnani
    • 2 years ago
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    ok thnx... @Miyuru

  14. Miyuru
    • 2 years ago
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    No problem..

  15. jiteshmeghwal9
    • 2 years ago
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    & when the astraunauts go to space they first look at the space which is very dark & they try to escape. Black holes are made when star become much older & then there is a very great blast namely nova or supernova & then it turns to black hole. Nice stuff @mayankdevnani :)

  16. jiteshmeghwal9
    • 2 years ago
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    \[\Huge{\color{red}{\text{What is Black Hole ?}}}\]

  17. jiteshmeghwal9
    • 2 years ago
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    It's working in my computer :)

  18. Miyuru
    • 2 years ago
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    Great indeed @mayankdevnani

  19. jiteshmeghwal9
    • 2 years ago
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    Ok ! now write it without putting space in LaTeX

  20. mayankdevnani
    • 2 years ago
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    ok

  21. Miyuru
    • 2 years ago
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    Well is the escape velocity greater than the speed of light ? ;)

  22. jiteshmeghwal9
    • 2 years ago
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    \[\Huge{\color{gold}{\star \star \star}{\color{red}{\mathbb{G}\color{blue}{\mathbb{r}\color{green}{\mathbb{e}}\color{magenta}{a}\color{purple}{t}\color{violet}{!!!}}}}}\]

  23. mayankdevnani
    • 2 years ago
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    That is the very definition of a black hole: an object so massive and dense its escape velocity is greater than the speed of light. So yes. If the escape velocity was slightly less than the speed of light the object would be a neutron star. ok @Miyuru

  24. hba
    • 2 years ago
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    \Huge{\color{red}{\text{What is Black Hole ?}}}

  25. Miyuru
    • 2 years ago
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    Ohh NICE Got it Thanks again... And nice letters @jiteshmeghwal9

  26. jiteshmeghwal9
    • 2 years ago
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    Thanxx !!! XD

  27. hba
    • 2 years ago
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    @jiteshmeghwal9 Can you teach me latex ?

  28. jiteshmeghwal9
    • 2 years ago
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    yeah ! why not

  29. hba
    • 2 years ago
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    @jiteshmeghwal9 So Lets start with it in a new tab i want it from the basics

  30. jiteshmeghwal9
    • 2 years ago
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    but in LaTeX group :)

  31. jiteshmeghwal9
    • 2 years ago
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    ok !

  32. Miyuru
    • 2 years ago
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    \[\color{green}{\text{I'll give you a nice idea what about posting a tutorial about LaTex..}}\] @jiteshmeghwal9

  33. mayankdevnani
    • 2 years ago
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    @Kira_Yamato @nubeer

  34. mayankdevnani
    • 2 years ago
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    @Shadowys @shahzadjalbani @scarydoor @SheldonEinstein

  35. Kira_Yamato
    • 2 years ago
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    すごいい

  36. ajprincess
    • 2 years ago
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    \[\Large\frak\color{silver}{Great~Tutorial}\] @mayankdevnani

  37. mayankdevnani
    • 2 years ago
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    thnx... @ajprincess

  38. mayankdevnani
    • 2 years ago
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    what? @Kira_Yamato

  39. Miyuru
    • 2 years ago
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    Great letters @ajprincess

  40. mayankdevnani
    • 2 years ago
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    @idkm @InYourHead

  41. Kira_Yamato
    • 2 years ago
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    すごいい = Great, Impressive, Awesome

  42. mayankdevnani
    • 2 years ago
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    i don' think @moongazer would like my tutorial!!!

  43. mayankdevnani
    • 2 years ago
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    thnx... any medals @Kira_Yamato

  44. ajprincess
    • 2 years ago
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    welcome:) @mayankdevnani nd thanx:) @miyuru

  45. mayankdevnani
    • 2 years ago
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    @RahulZ @Calculator @FlyingBubbles

  46. nubeer
    • 2 years ago
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    it's a nice tutorial. Good Work. :)

  47. mayankdevnani
    • 2 years ago
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    thnx... @nubeer

  48. jiteshmeghwal9
    • 2 years ago
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    @Miyuru most better LaTeX tutorial has been given by @AccessDenied :)

  49. mayankdevnani
    • 2 years ago
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    @angela210793 @AccessDenied

  50. Miyuru
    • 2 years ago
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    Ohh really @jiteshmeghwal9 thnx for telling me tht .. How can i find his tutorial...:)

  51. jiteshmeghwal9
    • 2 years ago
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    wait...

  52. mayankdevnani
    • 2 years ago
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    @sirm3d

  53. mayankdevnani
    • 2 years ago
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    @Hero @karatechopper @Jonask @EarthCitizen @uri

  54. jiteshmeghwal9
    • 2 years ago
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    http://openstudy.com/users/accessdenied#/updates/4fa5b375e4b029e9dc35a2cf

  55. jiteshmeghwal9
    • 2 years ago
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    In this tutorial my bro @TheViper has a gr8 role :)

  56. jiteshmeghwal9
    • 2 years ago
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    @Miyuru :)

  57. Miyuru
    • 2 years ago
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    Ohh thnx a lot @jiteshmeghwal9 for the links I'll see them ....:)

  58. jiteshmeghwal9
    • 2 years ago
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    yw :)

  59. Shadowys
    • 2 years ago
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    I'm guessing this is the Newtonian description of a black hole. :) Nice work.

  60. mayankdevnani
    • 2 years ago
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    thnx...

  61. mayankdevnani
    • 2 years ago
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    any medal @Shadowys

  62. mayankdevnani
    • 2 years ago
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    @mukushla

  63. mayankdevnani
    • 2 years ago
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    @TheViper

  64. mayankdevnani
    • 2 years ago
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    @ganeshie8

  65. TheViper
    • 2 years ago
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    \[Nice \quad Tutorial\]

  66. mayankdevnani
    • 2 years ago
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    thnx....

  67. mayankdevnani
    • 2 years ago
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    @nincompoop

  68. mayankdevnani
    • 2 years ago
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    @Omniscience

  69. mayankdevnani
    • 2 years ago
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    hey!!! @nincompoop it's just a basic

  70. mayankdevnani
    • 2 years ago
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    what??

  71. Shadowys
    • 2 years ago
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    As a side note, the black hole must be thought in terms of General Relativity instead of Newtonian Mechanics to avoid discrepancies between "gravity". For example escape velocity of a black hole is infinite and is not subject to the radius of the black hole in GR instead but not NM. IOW, NM just don't cut it.

  72. mayankdevnani
    • 2 years ago
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    it's just a structure not a deeply study ok @nincompoop but you are said it was very imp. part of black hole.....thanks for your advice

  73. mayankdevnani
    • 2 years ago
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    very-2 thank you @Shadowys

  74. mayankdevnani
    • 2 years ago
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    yaa

  75. mayankdevnani
    • 2 years ago
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    @Faris_Waleed

  76. Shadowys
    • 2 years ago
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    You're welcome! :) Just helping you helping others lol

  77. mayankdevnani
    • 2 years ago
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    :)

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