Point of No Return - The Event Horizon

For our amateur scientists who are curious...
Quantum Reality
Theory of Everything
The God Particle
Gravitational Lensing

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An Event Horizon for a layman, is an outer covering of an extreme astrophysical phenomena known as Gravitational Singularity. Just like a magnet has its magnetic field, Singularities have a gravitational field. Near the singularity escape velocity is much much grater than the speed of light but moving away it decreases and at a certain distance it is exactly equal to the speed of light or "c"(say). This one dimensional distance in 3-Dimension corresponds to a sphere which surrounds the singularity and known as the Event Horizon. Since the escape velocity is greater than the speed of light and nothing can cross the speed barrier so it is a one way route to the centre and also known as the Point of No Return.



It makes impossible to see inside a black hole or a naked singularity.

As an object or dust particles from comets, planets or even stars rotating around a black hole gradually reaches near the event horizon it starts gaining speed, breaks into pieces and gets heated up due to the collision between different bodies at high speed and thus forms Accretion Disk which in turn covers the Event Horizon up and makes it impossible to see it.

Event Horizon is the point where we observe certain events varying in properties than we normally observe in day to day life. Let's assume an Astronomer falling into a black hole. Closing into the event horizon he will experience tremendous amount of gravity. Gravity will change drastically from his head to neck to chest to other parts of the body that his body will be elongated and stretched infinitely and be torn apart.

The most interesting thing about this place is we can't see any object actually crossing the event horizon because of the General Relativity. The speed of the falling object is approaching "c" thus time is dilated to infinity. So the object, for an observer (in his frame of reference), will appear taking forever to fall into the black hole and will appear to have frozen to a stationary state and seize to go beyond. But in reality (object's frame of reference) it would have easily crossed the barrier and would have fallen into the singularity very long ago.

Now this property of gravity to dilate time could be harnessed to have a inter-planetary sling-shot into the future. A little maneuver around the event horizon for like 5-6 minutes will account for aprox. 100-150 earth yrs. Thus, someone can go past centuries without actually living it i.e. into the future. Also the maneuver is above the horizon so the risk of falling into the black hole is under control.
Please post your valuable comments.

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For our amateur scientists who are curious...
Quantum Reality
Theory of Everything
The God Particle
Gravitational Lensing

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The Concept of Time Travel

                                                         Page under heavy maintenance....

What do we exactly means when we talk about Time Travel and Wormholes. Time travel means gazing into time with speed greater than that of light. Going from one place to another with time elapsed much less than what would light have taken. So how to get that that speed to reach a point before light.

Below two simple figures can give us answer. Now seeing the figures what we conclude ? Actual distance between A and B is πr. Now time taken , T = [ πr /( 3x10^8 )] sec. But if somehow we manages to bend space-time and distorts it, then this will bring the two points A and B closer to each other. Now the distance become 2r and time taken T' = [ 2r /( 3x10^8 )] sec.

Thus it is clear that T' < T and thus we can reach to place B even before light does.

So, we concluded that on distorting space-time we can reach a place before light and this is the concept of time travel. This distortion is the fundamental property of the Wormholes. These are like tunnels whose one end is at one place and another is somewhere else in universe light years away.

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