hello, friends it time for new scientific consideration ,usually what we think how time pass away,,,,,,,,,o come on i wish to get back in past...also in future......what you say???...take a look........
TIME?HOW IT IS RELATED WITH SCIENCE?CAN WE TRAVEL THROUGH TIME?IF YES HOW?BYRakesh Bisht
TIMETime is a part of the measuring system usedto sequence events, to compare the durations of events and theintervals between them, and to quantify rates of change such asthe motions of objects. The Standard S.I unit of time is Seconds.Time is hard to define. For starters you cannot see or touch it,but its effects are clearly visible.The evidence that we are moving through time is found ineverything: our bodies age, buildings weather and crumble,trees grow, etc.This is what we all know…But there is something more depth in time.The second is the duration of 9,192,631,770 periods of theradiation corresponding to the transition between the twohyperfine levels of the ground state of the caesium 133 atom.
SPACE AND TIMESpace and time are involved in a special relationship.The effects of time on our physical surrounding are very real.Apart from that, time is also defined as the fourth dimension ofthe universe with the other three being space dimensions.So tight that you might wonder whether either of them couldexist without the other.This interconnected relationship of space and time is called thespace-time continuum, which means that any event that occursin the universe has to involve both space and time.A simple example of this relationship would be that of twoobjects that cannot exist in the same space at the same time,they have to be in their own space, or they might occupy thesame space, but at different times.
EINSTEIN REVIEWS...for us physicists believe the separation between past, present,and future is only an illusion, although a convincing one...-- Albert Einstein
EINSTEIN THEORY OF RELATIVITYThe Einstein Theory of Relativity relates to our physicaluniverse. It notes that time is relative with the speed of theobject while moving through space.According to this theory time passes differently for celestialbodies that move at different velocities. This concept is hard to grasp, and even harder to apply to ourreality.The main reason for this is that we ourselves are physicalbeings that inhabit a planet that moves with a fixed speed.Time on earth is therefore linear.To measure the speed of time you need at least two objects thattravel at different speeds.When they reunite time has past differently for each object.The closer the speed of an object gets to the speed of light, theslower the time in that object passes compared to anotherobject that remains stationary.
EINSTEIN THEORY OF RELATIVITYThe concept here is that time is not linear, but relative. It indicates that our day-to-day perception of time, is differentthan its real nature.However, the circumstances needed to observe, proof andbenefit of this real nature are extreme and have not yet beenaccomplished.The one circumstance that we know that affects the behavior oftime is the speed of the physical object in the universe.However since it is proven that time is relative, it might also bepossible that its relativity depends on more variables than justmovement of the object.Also, since movement has direction (there are three spacedimensions) is seems conceivable that time itself has directiontoo, or could even curve, bent, fold, twist etc.This where the question arises??
EINSTEIN THEORY OF RELATIVITYIf this is true then time travel is possible….Now next question is how?This question is chasing the thoughts of scientist’s fromdecades…..
LETS SEE WHAT FURTHER THIS THEORY SAYS?Einsteins theories about time and relativity are based on theexistence of a physical universe.To be able to measure time you need to have physical objects(matter, mass) that move through space.These objects generally suffer the effects of time (aging).Further to that there seems to be a need for consciousness inorder to have a notion of time.Therefore, to measure the passing of time it seems that youneed matter, movement and consciousness.What would happen to time itself if one of these basic entities istaken away? Is time maybe a result of interaction of theseentities?Again a question mark????????
LETS SEE WHAT FURTHER THIS THEORY SAYS?As a comparison we could look at other entities that are theresult of movement: • An induction electric current for instance is the result of the movement and interaction of objects with certain characteristics. • Without objects or movement, induction electricity does not exist. • It gets only generated under special circumstances and disappears when the conditions needed cease to exist. • It is not an absolute static entity that always exists but a derived one. The question is: If you cannot measure time because one of the key entities is missing, whether time itself continues to exist, time might be generated and only exists as a consequence of interaction between matter, movement and consciousness.
LETS SEE WHAT FURTHER THIS THEORY SAYS?Universal rules determine how time applies to physical objectsthat move through space.However, there are no definite rules about how it would apply topure non-physical entities. Imagine a free, unattached, independed consciousness, thatcan move through space and interact with the physical universe,but without having mass or body (God, angels, spirits).A discussion regarding such entities might be useless as wecannot proof that they exist.If they would exist however It would be hard to determine andimagine how time would affect such entities.
TIME TRAVELTime travel is the concept of moving between different pointsin time in a manner analogous to moving between differentpoints in space.Time travel could hypothetically involve moving backward intime to a moment earlier than the starting point, or forward to thefuture of that point without the need for the traveler toexperience the intervening period (at least not at the normalrate). Any technological device whether fictional or hypothetical that would be used to achieve time travel is commonly knownas a Time machine.Although time travel has been a common plot device in sciencefiction since the late 19th century, and the theoriesof SPECIAL and GENERAL relativity suggest methods for formsof one-way travel into the future via time dilation. It is currently unknown whether the laws of physics would allowtime travel into the past.
TIME TRAVELThis lead to proposal of many theories and hypotheses….In modern Scientists STEPHEN HAWKING contributed majorpart….“BECAUSE THERE IS A LAW SUCH AS GRAVITY, THEUNIVERSE CAN AND WILL CREATE ITSELF FROMNOTHING” -STEPHEN HAWKING
STEPHEN HAWKING CONTRIBUTIONThe laws of physics actually accommodate the notion of timetravel, through portals known as wormholes."The truth is wormholes are all around us, only theyre too smallto see. They occur in nooks and crannies in space and time,"Hawking writes. "Nothing is flat or solid. If you look closelyenough at anything youll find holes and wrinkles in it. Its a basicphysical principle, and it even applies to time. Even somethingas smooth as a pool ball has tiny crevices, wrinkles and voids.”Down at the smallest of scales, smaller even than molecules,smaller than atoms, we get to a place called the quantum foam.This is where wormholes exist.Tiny tunnels or shortcuts through space and time constantlyform, disappear, and reform within this quantum world.And they actually link two separate places and two differenttimes.
WORM HOLESThe tunnels, unfortunately, are far too small for people to passthrough -- just a billion-trillion-trillionths of a centimeter -- butphysicists believe it may be possible to catch a wormhole andmake it big enough for people, or spaceships, to enter, Hawkingwrites.Theoretically, a time tunnel or wormhole could do even morethan take us to other planets.If both ends were in the same place, and separated by timeinstead of distance, a ship could fly in and come out still nearEarth, but in the distant past. Maybe dinosaurs would witness the ship coming in for alanding.
A wormhole is a theoretical tunnel or shortcut, predicted by Einsteins theory of relativity,that links two places in space-time - visualised above as the contours of a 3-D map,where negative energy pulls space and time into the mouth of a tunnel, emerging inanother universe. They remain only hypothetical, as obviously nobody has ever seenone, but have been used in films as conduits for time travel - in Stargate (1994), forexample, involving gated tunnels between universes, and in Time Bandits (1981), wheretheir locations are shown on a celestial map.
CONCLUSIONUltimately, scientists may find that only travel into the future ispossible, as the laws of nature may make travel to the pastimpossible so the relationship between cause and effect ismaintained. For example, if you could travel in the past and dosomething that prevents yourself from being born, how couldyou exist in the future to travel back in time?So, for every discovery there are both advantages anddisadvantages. But the ultimate goal must be , it should not beagainst the nature……