time travel:time and tides wait for none or does it???

Time travel:

Time travel A RACE AGAINST TIME

A PRESENTATION BY::

A PRESENTATION BY: GROUP-7 GROUP LEADERS: SARITA KUMARI(CS/09/35) SAYANTAN SAHA(CS/09/36 ) GROUP MEMBERS: SHANTANU MAITRA(CS/09/37) SHELLY BOSE(CS/09/38) SHIVAM KUMAR JHUNJHUNWALA(CS/09/39) C.S.E~2 nd year

agenda:

agenda INTRODUCTION MYTH ABOUT TIME TRAVEL POSSIBILITY OF TIME TRAVEL SCIENTIFIC EXPLANATIONS VIA FASTER THAN SPEED OF LIGHT USING WORMHOLES USING COSMIC STRINGS PARADOXES THE IN TWO PLACE AT ONCE PARADOX THE PARADOX OF CHANGING THE PAST GRANDFATHER PARADOX BUILDING A TIME MACHINE ALTERNATE UNIVERSE EFFECT OF TIME TRAVEL ON SOCIETY

INTRODUCTION:

INTRODUCTION WHAT IS TIME TRAVEL??? It is the concept of moving between different points in time. It is sending of objects backward in time to some moment before the present. Or it is sending of objects forward from the present to the future.

Myths About Time Travel:

Myths About Time Travel In old days, there were some myths or theoretical evidences regarding time travel. We can take some of them as examples :- The Tale of Urashima Taro. The Story of Lord krishna .

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APPARENT TESTIMONY OF TIME FORWARDING BY LORD KRISHNA

Myths of Time Travel:

Myths of Time Travel Urashima Taro, an young fisherman from Japan, Visited an undersea palace for three days. But When he returns back to his land, he found himself After 300 years in the future. So, can we say that Urashima travelled in time???....

IS TIME TRAVEL REALLY POSSIBLE ????:

IS TIME TRAVEL REALLY POSSIBLE ????

POSSIBILITY OF TIME TRAVEL:

POSSIBILITY OF TIME TRAVEL IT IS POSSIBLE THEORATICALLY. BUT PRACTICALLY???? BEFORE GETTING INTO THAT LET US EXPLORE THE THEORATICAL POSSIBILITIES……

SCIENTIFIC EXPLANATIONS:

SCIENTIFIC EXPLANATIONS Time travel to the past is theoretically allowed using the following methods:

VIA FASTER THAN SPEED OF LIGHT :

VIA FASTER THAN SPEED OF LIGHT If one were able to move information or matter from one point to another faster than light , then according to special relativity , there would be some inertial frame of reference in which the signal or object was moving backward in time.

USING WORMHOLES :

USING WORMHOLES WORMHOLES ARE A HYPOTHETICAL WARPED SPACE TIME…. IT HAS GOT TWO ENDS The stationary end The accelerated end

USING WORMHOLES:

USING WORMHOLES One enters the wormhole through the stationary end and leave through the accelerated end Time dilation causes the accelerated end to have aged less than the stationary end HENCE YOU HAV REACHED THE PAST…..

Use of Cosmic Strings:

Use of Cosmic Strings According to the Cosmic String Theory , the perfect definition for a cosmic string is that, it is a type of string that having a high characteristic energy scale close to the Plank Energy. It is diluted away with the expansion of the universe and not observable.

BUILDING A TIME MACHINE:

BUILDING A TIME MACHINE According to Stephen Hawking , building a time machine isn't hard: "All you need is a wormhole, the Large Hadron Collider or a rocket that goes really, really fast." Just grab one of those and hop right through the fourth dimension ( i.e.TIME ).

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Hypothetical view of time machine

Evidence of time travel….:

Evidence of time travel…. Given below Is an article from a newspaper… This might be a hoax……..but still it was printed in a newspaper

but where are the Time Travelers, then?:

but where are the Time Travelers, then? Therefore, it’s very unlikely that time travel ever becomes possible It is very unlikely that the time travelers could have left no evidence But there is no evidence of time travelers in our past If time travel ever becomes possible in the future, then time travelers would most likely have visited our past already

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THOUGH SCIENCE BELIEVES THAT TIME TRAVEL INTO THE PAST OR THE FUTURE IS POSSIBLE BUT THERE ARE CERTAIN CONTRADICTION OR PARADOXES TO THESE SCIENTIFIC THEORIES …….. LETS CHECK THESE OUT….

paradoxes:

paradoxes Trust no Future, however pleasant ! Let the dead Past bury its dead !

The In Two Places at Once Paradox:

The In Two Places at Once Paradox No one person can wholly be in two places at once Wholly is important here If you believe this, (which you should) then doesn’t that mean time travel is impossible? It would allow you to go and wish yourself many happy returns at your last birthday party

Visiting Myself:

Visiting Myself Me existing through space-time MY LAST BIRTHDAY PARTY

The Paradox of Changing the Past:

The Paradox of Changing the Past If you could go back in time, you could do more study for the test and get a better mark But , you already have a mark! You can’t change it – its part of history now! If time travel is possible, then you could change the past It is never possible to change the past

The Grandfather Paradox:

The Grandfather Paradox If you could go back in time, you could kill your grandfather before he could produce any offspring But, if you did that, then there would have been no you to make a time machine and go and kill him! Which means that you can’t have killed him…

SOLUTION TO THE PARADOXES:

SOLUTION TO THE PARADOXES ALL THE PARADOXES WE HAVE COME ACROSS SUGGESTS THAT TIME TRAVEL IS IN NO WAY POSSIBLE…….. THEN WHATS THE SOLUTION???? AN ALTERNATE UNIVERSE

ALTERNATE UNIVERSE:

ALTERNATE UNIVERSE Time travel is possible, but it does not and cannot change the past When you time travel, you create a new alternate universe So you can change things, but not things from the past in our universe When you time travel, you can affect the past because you already did

ALTERNATE UNIVERSE:

ALTERNATE UNIVERSE The alternative universe theory suggests that for every possible outcome of an event, an alternative universe is created. Which means there will be infinite number of universes. But are all this universe real????? We know that anything which is infinite cannot be real……. So alternate universe cannot exist…..

Effect of time travel on society..:

Effect of time travel on society.. Time travel may or may not be possible practically but its very conception has made people to believe that they can visit their past or the future…… Books on time travel: Time's Last Gift by Philip Jose Farmer Soldier From Tomorrow by Harlan Ellison and many others…..

Effect of time travel on society..:

Effect of time travel on society.. TERMINATOR SERIES… STAR TREK SERIES FILMS ON TIME TRAVEL

Effect of time travel on society..:

Effect of time travel on society.. CRIME TRAVELLER TIME SLIP CAPTAIN ZORO DOCTOR WHO TELEVISION SERIES ON TIME TRAVEL

Effect of time travel on society..:

Effect of time travel on society .. So in spite of being an hypothetical concept time travel has aroused hopes of visiting the past or the future in people. these books films and television series proves that people do believe in time travel and they are trying their best to make it happen….

Can we change our past???:

Can we change our past??? Regardless of the theories we cannot believe time travel is possible main reason for this is because we have recorded history and we know what events happened in the past…then how can we change our past??? The question still remains unsolves …… The following quote sums it up rather well I think "This only is denied to God: the power to undo the past "

ACKNOWLEDGEMENT:

ACKNOWLEDGEMENT We had been assigned the task of choosing a topic and preparing a presentation on it.while searching for some “off the hook” topics we came across this topic of “ TIME TRAVEL ”.The concept of time travel is rather hypothetical but it did created a stir amongst people and aroused hopes of visiting the past and the future in them We are really grateful to our teacher Mrs.Mahua Chaudhuri who have helped us immensely in preparing the presentation….

Bibliography…:

Bibliography… WEBSITE: www.google.com www.wikipedia.com www.brianbosak.com

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Enjoy your present instead of repenting your past or hovering over your future....... Thank you