time travel: a science fiction or a science fact?
DESCRIPTION
A Presentation slide based upon Time Travelling. Theory of Relativity, Forward & Backward Time Travel, Grandfather Paradoxes describedTRANSCRIPT
Time Travel:
A Science Fiction orA Science Fact?
Prepared by: Sayeem Khan (1106076)
Outline
Concept of Time Travel Time travel to Past Time travel to Future
Paradoxes The “Grandfather Paradox” Stephen Hawking’s Paradox
Some discussion on Ronalt Mallett’s Time Machine
Concept of Time Travel
Theory of RelativityTime is the “Forth Dimension”Time is relative
Time Travel to the Past
Possible Methods:•Travelling faster than light•Wormholes•Cosmic Strings or Black Holes
Time travel to the Future
Possible Methods:•Time-Dilation•Hibernation•Time-perception
The Grandfather ParadoxGoing back
in TimeChapman kills his
grandfather
Chapman’s parents are
not bornEven
Chapman is not born
So he didn’t kill
his grandfathe
r
??????
Replies to“Grandfather Paradox”
Novikov’s Self-Consistency principle• Contradictory causal loops cannot form, but
those consistent ones can.
Parallel Universes• Multiple version of future exist in parallel
universes.
Hawking’s Paradox
Why don't we observe tourists, souvenir hunters, historians, archaeologists, Criminals visiting us from future?
A Reply to this paradoxGlobal warming, Nuclear war, Super Viruses or The Robotic Uprising killed all human
Dr. Ronald Mallett
A Physicist trying to build world’s first “Time-Machine”
Concept of Mallett’s Time Machine
Question???