Black holes continued...

Consider a case when a photon(a light ray) of certain energy equal to hf where h is plank's constant and f is the frequency of radiation is sent near the black hole it is likely to fall into the singularity due to its intense distortion or if the photon is sent in such a way that the photon maintains some distance with the event horizon then light suffers deviation and its direction of propagation changes this phenomenon is termed as ‘gravitation lensing ' it is bending of light in simple terms this phenomenon is used to study the things behind huge objects like planets stars and other heavenly bodies.

Usually the deviation of light near huge objects are negligible when compared to black holes ,the deviations near black holes can even get to 180 degrees sometimes . In simple terms this means that the direction of light can get reversed .

Black hole

The idea of black holes makes us think that they may be invisible but this big monster which feeds on so many cosmic entities and even energy is very distinct in our universe but unfortunately they are many light years far from us and also as black holes consumes everything even light hence it becomes very difficult to prove its existence and also to study about it.

Is black hole immortal ?

According to Stephan hawking one of great cosmologists, had a very interesting theory to explain the end of a black hole . Related to this theory the event horizon constantly dissipates energy in the form of heat and electromagnetic radiation. Laws of thermodynamics governs the working of the black hole system. Even though black holes consumes a lot of matter and energy

The constant loss of energy from the system dominates or overcomes its energy intake and eventually the black hole starts to contract and its radius decreases and finally it evaporates into the universe.