time travel - university of british columbiaudls/slides/udls-sam-creed-time-travel.pdf · the...
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Time Travel
UDLS - Jul 10 2015
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time trav·elnoun1. (in science fiction) the action of traveling
through time into the past or the future.
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In Pop Culture
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In Pop Culture
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Can it be done??
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Yes!We are all currently traveling forward in time!!
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Forward Time Travel
Stories from early history (Hindu, Japanese, Buddhist mythology)- involve protagonist visiting supernatural
entity; return home after 100+ years
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Time Dilation
Special Relativity- Einstein (1905)
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Twin Paradox
Sergei Krikalev spent 803 days in space orbiting Earth;result, traveled 0.02 seconds into future
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Backward Time Travel
- modern idea- first appears in early 18-19th C. English Lit
- Christmas Carol?- H.G. Wells The Time Machine (1895)
also time zones.
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Backward Time Travel
Impossible in the standard model; would require information propagation FTL speed
Theoretical particle: Tachyon- travels faster than c- uses more energy as it slows down
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The Grandfather Paradox
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The Butterfly Effect
Chaos Theory
smallest change to the past could drastically alter future
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The Einstein-Rosen Bridge
Blackholes; wormholes
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Timelines