Skip to main content

Black Holes


I recently watched the "Chrsitopher nolan" movie INTERSTELLAR and there were somethings about black hole that i quiet didn't understood.Then i came to know many other people were having this problem,so this post is to you guys


  • Astronomers have spent much time analysing how stars form and how they develop.One problem was to explain what happened to a massive star at the end of its life.
  • In 1967 the term "black hole" was used to describe one type of object that is left when a massive star dies.
  • Four years later,Cygnus X-1 was found,the first candidate for a black hole

 1.DETECTING A BLACK HOLE 

  • Black holes appear black because nothing,not even light, can escape from their gravity.
  • Astronomers cannot detect them directly, but can "see" them because of the effect their gravity has on everything around them,such as gas from a nearby star.
  • The boundary of the black hole is called event horizon.

2.ENTERING A BLACK HOLE
  1.   At the start of the fall, everything appears normal.
  2. As the astronaut approaches the hole, he starts to be stretched.
  3. Light is also stretched to a longer wavelength so the astronaut appears redder
  4. Gravity stretches the astronaut.Close to the hole, he is torn apart


3.INSIDE A BLACK HOLE


  • Space and time a highly distorted inside a black hole.
  • Anyone unlucky enough to fall into one would be stretched to resemble spaghetti, as gravity pulled more on the feet than the head.
  • An observer watching the person fall would also see time running slower as the person fell towards the event horizon 

Roger Penrose 

  • The English mathematician Roger Penrose (b.1931) theorizes on the nature of space and time
  • He has shown that a massive collapsing star inevitably becomes a black hole, and that all black holes have a singularity point, occupying no virtually no space,that contains the entire mass of the dead star
  • Penrose believes the singularity is always hidden by an event horizon 


Comments

Popular posts from this blog

മധുരയും കൃഷ്ണനും കലാമും

മധുരം മധുരൈ. ഇത് എല്ലാ പ്രാവശ്യവും പോലെ ഒരു സാധാ യാത്ര ആയിരുന്നില്ല. ഒരുപാട് നല്ല അനുഭവങ്ങൾ തന്ന , ഒരു ലോ ബഡ്ജറ്റ് ട്രിപ്പ്‌ എന്ന് വേണേൽ പറയാം.കുട്ടിക്കാലം തൊട്ടേ ഉള്ളിലുള്ള ആഗ്രഹമാണ് ഒറ്റയ്ക്ക്ഒരു യാത്ര. എന്നാൽ അതിനിയും നീണ്ടു പോകുന്നു. പുസ്തകങ്ങൾ  കൊണ്ട് നമ്മുക്ക് അറിവ് നേടാനാവുമായിരിക്കും, എന്നാൽ ചുറ്റിലും ഒന്ന് ശ്രദ്ധിച്ചു നോക്കി ഒരു നടത്തം നടന്നാൽ ഒരുപാട് കാഴ്ചകളായിരിക്കും നിങ്ങളെ കാത്തിരിക്കുന്നത്. അത് തന്നെ ആണ് ഈ  ലോകത്തിലെ ഏറ്റവും നല്ല യൂണിവേഴ്സിറ്റി , അവിടെ കിട്ടുന്നത് വില കൊടുത്ത് വാങ്ങാൻ കഴിയില്ല എന്നൊരു വ്യത്യാസം മാത്രം. :"നിക്ക്  നിക്ക് ..!!" :"എന്തേയ്!? :"കാര്യം പറയാതെ കാട് കയറല്ലെന്റെ ചങ്ങായി ....!" :"മറന്നു വെറുപ്പിക്കുന്നില്ല ...കാര്യത്തിലേക്ക് കടക്കാം ." വെറുപ്പിക്കുന്ന ക്ലാസ്സ്‌ ടൈമിൽ ഞാൻ  ഫ്രണ്ട് അജ്വദിനോട്   മധുരയ്ക്ക് കോളേജിന്റെ മുന്നിലെ  കിളികൊല്ലൂർ  റെയിൽവേ സ്റ്റേഷനിൽ നിന്ന് തന്നെ ഒരു പാസ്സന്ജർ ട്രെയിൻ ഉള്ള കാര്യം പറഞ്ഞു ....വീക്കെൻഡ് ആണ് വരുന്നെ ...വെറുതെ  ഹോസ്റ്റലിൽ ചടചിരിക്കുന്നതിലും നല്ലത് എവിടേക്കെങ്...

Cadence of suffering

I am in pieces.  I can't think of anything good to do. I look into all these peoples faces and I wonder how they just go with them the flow. This has to get better. You lose pieces of your life every once in a while. You can either find a new piece or you can live a whole miserable, tedious life trying to retrieve that lost piece.  Life is a maze that you'll never be able to find your way out from. Love is a riddle that you'll never be able to find an answer for.  Yet you run, trying to find that exit door, looking for answers of rhetorical questions.  You know the path you chose is gonna get you hurt. But you can't turn back now because what else is there? We've all been there. That phase in life when you feel like everything is falling apart. That there's isn't a single thing you can do to make it alright.  Stephen Hawking said, ”However bad life may seem, there's always something you can do to succeed at it. Where ther...

The unbearable weight of consciousness.

I’ve always been pretty conscious about myself. I am not sure if that’s a good thing or not. A bit of both, I could say. Being fully aware of myself has always helped me to know what I want in certain situations, with people, etc. I know what sort of person I want to be, in general. I’m 100% certain about the vibe I want to give out to people, and I am sure that for the most part, I’ve succeeded in doing the same. But still, being super conscious most of the time has not helped me figure out what I want to do with life. This has been my life’s biggest dilemma. I used to be ambitious growing up, I guess up until end of the college. Maybe corporate did it, perhaps I did this to myself. I am the most unambitious man I know right now. Does that scare me, I don’t know. I see people around me hustling, switching techs, and companies, climbing up the ladder, making huge life decisions, and moving out of countries. I feel nothing. There is nothing I want to be.  Sometimes I feel like I pea...