Photons and the black holes

-
Of course, photons do not become heavy and does not hit you down. That is because as the theorists explain, the mass of photon at rest is supposedly zero!

So when the photon is having a zero mass, the equation we saw earlier would have a zero in the numerator and therefore, there is no mass to it even while travelling.

Or should we say it becomes an indeterminate, a zero / zero!

Well, let us leave aside Einsteinian Photon for a moment and get back to Newton. If as the theorists say, photon has zero mass. Then according to Newton's gravitational law, the force of gravity between any two objects is proportional to their masses.

Force of gravity = G x m1 x m2 / square of r where G is gravitational constant, m1 and m2 are masses of the objects and r is the distance between them.

So, when light tries to escape from, let us say a black hole, the mass of the photon is zero while that of the black hole is very huge! 

Theorists again say, black hole is black because light is unable to escape from a black hole due to its huge gravitational pull.

If photon has zero mass (m1 in the formula), then the gravitational pull on a photon has to be zero.

If this is the case, then light cannot be withheld by the black hole and therefore, light should emanate out of the black hole or in other words, black hole cannot be black!

But that again, is not what is happening!

What is wrong here? Comments please!

What is a Logical Fallacy?

Comments

Post a Comment

Popular posts from this blog

Krishna's Curse

-
Image
  1. “Sanjaya”, called out Dridharashtra.   It was the first day of Uttrayana, the winter Solstice. Almost, two months have gone by since his son, Dhuryodana met his end at the hands of Bhima. Dridharashtra could almost feel the impact of the mace on the thighs of his son. The pain that swept through him also went through the arms of the blind man and crept up to his heart!   Tears welled up in his eyes every time he thought about it and grimaced every time, as if he suffered the pain.   He heard the soft steps approaching him and could immediately recognize that it was Gandhari. He can recognize everyone around him from the way they walked. The gait differed. The pressure on either of the feet differed. He always spotted a new person in the room with ease and élan.   He even identified in which direction they are facing; he would know when they turned from one side to the other. The pressure that the legs exerted on the ground was ‘audible’ to him. He could sense it as if he had some
Read more

நுண் அண்டம் (சிறு கதை)

-
Image
நடந்ததை புரிந்து கொள்ள கொஞ்சம் நேரம் பிடித்தது ! நாங்கள் இரு நூற்று எட்டு பேர் இருந்தோம் . புது விதமான பயண முறைகள் பல உலகங்களில் தோன்றி நெடு நாட்கள் ஓடி விட்டன . ஆனாலும் , ஒவ்வொரு பயணத்திலும் நாம் சந்திக்கின்ற பிரச்சனைகள் இந்த அண்டத்தை புரிந்து கொள்ளுவதில் நமக்கு பெரிய உதவியாக இருக்கிறது . ஏறக்குறைய ஆயிரம் வருடங்களுக்கு முன்னால் , அடுத்துள்ள கிரகத்தின் புவி ஈர்ப்பு சக்தியை பயன் படுத்தி , மனித இனம் ஒரு கிரகத்தில் இருந்து இன்னொரு கிரகத்திற்கு பயணித்தார்கள் .  இன்று பல ஆயிரம் ஒளி வருடங்களை கூட வால் நட்சத்திரங்கள் போன்ற விண் கோள்களை ஒட்டிக் கொண்டு பல உயிரனங்கள் சென்று வருகின்றன . ஏன் , நம் பூமிக்குக் கூட முதல் உயிரனம் அப்படித்தான் வந்து இருக்கும் என்று பலரும் நம்புகிறார்கள் . நாங்கள் எங்கள் இருப்பிடத்தை விட்டு கிளம்பியவர்கள் அல்ல . என்னுடைய மூன்றாவது முறை தாத்தா , அதாவது என் தாத்தாவின் அப்பா , எனது மூன்றாவது முன்னோடி தாத்தா , அந்த தாத்தா தான் , இருப்பிடத்தை விட்டு கிளம்பியவர் . இருப்பிடத்த
Read more

Black Tax Economy

-
Image
  Black Money is money earned by an individual or a citizen without the knowledge of the government of his country! White money is what he earns with the knowledge of his government and pays tax for.   Similarly, Black Tax is that income which the government gets without the knowledge of the common man of their country! While the white tax is the one that the government collects directly from its citizens.   You may be wondering, is there any income that the government might get beyond the known taxes. Yes, there are many that would of course, be brought under the accounts but might be pretty far from proper utilization!   Black Tax, like black money, is very harmful for the economy, in the sense that it generates black money; it is the source of creation of inequality; using this the government misappropriates public wealth which could go to anybody’s kitty and so on. In short, many activities that have negative connotations have their beginnings in Black Taxes!   So, let us take a qu
Read more