Monday, March 19, 2007

Can Present Change Past?

Scientist and researchers has always been curious of knowing past and future but is this possible that present could affect past?In India from the early age this is common conception what we are now because what we have done in past thats Karma principle but what scientist are saying that our present can influence past?Imagine if we given a chance to rectify our past mistakes which we didn't want to happen,what and how we will change and what would be the world then Imagine If Hitler has to given chance to rectify his past what he would have do or done .Life would be more beautiful or uglyonly researchers can says:
"Common sense tells us that influencing the past is impossible -- what's done is done, right? Even if it were possible, think of the mind-bending paradoxes it would create. While tinkering with the past, you might change the circumstances by which your parents met, derailing the key event that led to your birth.
Such are the perils of retrocausality, the idea that the present can affect the past, and the future can affect the present. Strange as it sounds, retrocausality is perfectly permissible within the known laws of nature. It has been debated for decades, mostly in the realm of philosophy and quantum physics. Trouble is, nobody has done the experiment to show it happens in the real world, so the door remains wide open for a demonstration.
It might even happen soon. Researchers are on the verge of experiments that will finally hold retrocausality's feet to the fire by attempting to send a signal to the past. What's more, they need not invoke black holes, wormholes, extra dimensions or other exotic implements of time travel. It should all be doable with the help of a state-of-the-art optics workbench and the bizarre yet familiar tricks of quantum particles. If retrocausality is confirmed -- and that is a huge if -- it would overturn our most cherished notions about the nature of cause and effect and how the universe works.
Dating back to Newton's laws of motion, the equations of physics are generally "time symmetric" -- they work as well for processes running backward through time as forward. The situation got really strange in the early 20th century when Einstein devised his theory of relativity, with its four-dimensional fabric of space-time. In this model, our sense that history is unfolding is an illusion: The past, present and future all exist seamlessly in an unchanging "block" universe.
"If you have the block universe view, the future and the past are not any different, so there's no reason why you can't have causes from the future just as you have causes from the past," says David Miller of the Centre for Time at the University of Sydney in Australia. .....
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Posted by Ajay :: 5:30 PM :: 0 comments

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---------------oOo--------------- Two Talking Birds

Two old friends(birds) met after long time and they start talking about their life and what path they choosen at young age.
Ist Bird:I think which path of safe life I chosen for me is useless or can say is boring.While your life is full of excitement and freedom .You can conquer sky as king conquer his kingdom.Nobody can stop you from exploring sky,you can fly as high as you can..Lots of freedom but no boundation.Lovely..Na!
IInd Bird:Well,I think your life is much better behind the closed bar as their is no worry,no fear,you eat like king,everything at doorsteps,men are servant for you,what more one can wish.Truly five star life..
Ist Bird:Ya, I have everything except freedom,no excitement with safe life..
After talking sometime they decided lets change our respective life and see how it works for each other.
Ist Bird:After getting freedom from closed bar that bird start flying as child got freedom when their parents went away.But,after few hours of excitement , thrill,speed her wings start aching as she forget to practice how to fly and she felt she will fall as her wings were aching and she wished ,she would reach her closed bar as soon as possible.
IInd Bird:She too was enjoying life of no physical works,day night what she has to do is eat and sleep,at first she become mad when she got hot milk in morning and lavish lunch and excellent dinner but after eating she always felt urge to fly and sometimes she feel as someone has cutted her wings and she wished ,she could go away from this safe and protective life...
After few days they met again and tell each other what they felt off and wished and after exchanging smile they exchange their respective earlier position.

Posted by Ajay :: 9:19 AM :: 0 comments

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