Black Holes !! for a time machine ??

In my previous blog , I discussed about how we can visualize wormholes for making time machine from scientific point of view. That idea was a quite a fascinating one but is very difficult to implement. That concept was bounded by a paradox.Time in various aspects flows like a river. A river has different speeds at different places during its journey to the oceans. Just like that , Time also has different speed at different places. Sounds creepy !! but thats true,,,, not everywhere in the universe we have 24 hour's day and 365 day's year. Time is different at different parts of the universe. One of the main factors for this behavior of time is the weight of different objects in the universe. Heavier objects have the capacity to reduce the speed of time in the environment around it. Lets understand that with an example.Around earth we have a GPS system of 31 satellites. These satellites revolves around earth on their respective fixed orbits. They have a very accurate atomic clock embedded inside them. That clock has a very strange behavior. It becomes faster by 10 billionth of a second every day , and people monitoring those satellites , have to correct it everyday. If they don't correct that then that would cause drastic changes on earth. It will result in a difference of 10 killometers on earth and that will cause serious troubles on earth when we will use the GPS system. Now the reason behind that problem is the weight of the earth , and the Gravitational force. objects
pull Time. Thats the concept. Earth too tries to slow down Time by pulling it in the environment around it. That causes the clock in the satellites to become faster as we measure time with reference to earth. If we consider the pyramids , they too seem to show the same behavior. Each pyramid in Egypt has a weight around 40 million ton. According to the concept above that objects pull time , a pyramid also pulls time around its environment. If we consider that , then everything around the pyramid will seem to move a bit slower compared to distant objects , when people standing far will watch towards pyramid. When people near pyramid will watch at objects at far , they will look faster to them.But that we don't feel because that haapens at a very insignificant level.Now Thats the key point. The way to travel in time is hidden in that concept. For that we need much much heavier object than a pyramid or earth so that the effect of time being pulled by that object could become significant enough for us to experince our journey in time. And such an object we can find at the center of our galaxy , 26000 light years away from us - a Black Hole. The weight of that particular Black Hole is equal to 4 million suns.These kind of black holes have extraordinary gravitational pull and even light can't escape near them.It has the ability to reduce Time's speed. So they can become our natural Time machine. How ? Lets consider .The diameter of such a Black hole is 50 million Killometer. Now if a spacecraft reaches to such distance , then we can simulate a time machine. Suppose the spacecraft has enough speed to be stable and move in an orbit around the Black hole , seems difficult but not impossible. Now consider a situation in which the spacecraft takes 16 minute to complete one rotation around black hole.But due to strong pull of black hole Time will become slow in the vicinity of the black hole. That means for example people in the spacecraft would feel as if they are taking 8 minutes to complete one rotation when they measure time refering to their current position in space. So on earth actually 16 minutes would have been passed but in that spacecraft only 8 mintutes have passed. Now consider the situation that they have rotated around the black
hole for five years. But on earth 10 years would have been passed. That means people in the spacecraft would be 5 years younger than the people on earth. The people sitting inside the spacecraft would become one way "Time travelers". 'one way' because in that situation they can't move back 5 years. The advantages of this concept over wormholes are - It doesn't have any paradox , and it also doesn't have any feedback kind of phenomena to destroy it. The difficulty is to send a spacecraft that far and make its speed enough to be able to revolve around black hole of such an extraordinary gravitational pull. So we have to risk our lives to reach that far. What if we could create a system on our planet itself , so that we don't need to be foolhardy. Thats the point of next concept I am gonna discuss....... We have a concept of creating such a system. For that we will exploit speed of light. And that would be my topic of discussion in my next blog......... till then happy blogging.....
If you have an idea in your mind then do share.......
comments are welcome.....