Time Travel
Abstract: During our research on the theories of time travel we discovered several possible means of traveling through time. These means were most notably by phenomena known as wormholes, rotating cylinders and cosmic strings. We also learned about why it is that time travels in one direction and how time can change at relativistic speeds. The issue of paradoxes that arise from time travel was also addressed, such as the question put forth by the famous grandfather paradox. Possible solutions to these paradoxes are also included as proposed by Stephen Hawking.One of the biggest fascinations to people is the question of whether or not we have the capabilities to travel backwards or forwards in time. This fascination has been expressed through countless works in both literature and cinema. But the question remains: Do the laws of physics allow for travel to a time other than one's own? And if they did, what would be the results? In fact, time travel is permitted by the laws of physics in certain circumstances. Theoretical phenomena such as wormholes, rotating cylinders, and cosmic strings all provide possible means of traveling through time. First off, it is important to discuss the concept of time itself. For example, why
Is time travel possible? Most physicists believe it does not violate the laws of physics, but still, even if possible, would we have the needed technology and resources to succeed? Or should we simply accept the theory of Stephen Hawking that space-time will only be curved enough in the future? In the end, we'll just have to wait and see. So even if this character killed his grandfather in the past, he would still exist, as it is really not his grandfather. In this curved space-time, objects with positive mass-energy density produce positive curves in space-time like a sphere, while those with negative mass-energy density produce negative curves like a saddle. Further support for this comes from how the human mind remembers things. Those with wavelengths that do not fit a whole number of times in the distance between the plates will not remain in the area. Fortunately what is usually considered the void of space actually contains virtual particles. 3 Now imagine that one end of the wormhole is moving at a velocity near the speed of light while the other end is stationary. Some unanswered problems with the rotating cylinder concept are the possibility that the cylinder would collapse under its own gravitational pressure or "explosively disintegrate" due to the incredible speeds it would spin at. In order for Thorne's model to work however, some sort of "exotic" matter would be required at the center of the wormhole that would somehow keep the wormhole open and stable. According to this conjecture it is impossible for macroscopic bodies to carry information into the past. Something would always interfere to ensure that the time line remains as it already is. Unfortunately all bodies in space have positive density relative to space which is considered zero. Such exotic matter though has not been proven to exist as of yet. Another point that can be drawn from this theory is that if someone somehow traveled faster than light, they would go into the past, although traveling this fast is forbidden by Einstein's theory. It would also allow for the person to return to this time from which they started.
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Acceptance Essays
