A simple explanation of the phenomenon making travel through time possible.

1. Time Travel
By Cyprien CHARRA

2. DID YOU
KNOW ?

3. TIME TRAVEL IS
FEASIBLE !

4. NOT
WITH SOME FAKE
TIME MACHINE

5. BUT
THANKS TO …

6. RELATIVITY

7. 299 792 458 m / s
THIS IS THE SPEED OF LIGHT

8. 299 792 458 m / s
IF YOU MANAGE TO GO FASTER

9. YOU WILL GO BACK
TO THE
PAST*
*But probably not with Michael J. FOX

11. THEN, WHAT USE IS

12. WE CAN USE IT TO
SEE THE PAST

13. HOW ?

14. LOOK
UP

15. WATCH
THE
STARS

16. WE SEE THE LIGHT OF
THE
WITH 8 MIN OF DELAY

17. WHICH MEANS… IF IT
" turns off " NOW

18. WHICH MEANS… IF IT
" turns off " NOW
WE WON'T NOTICE IT
BEFORE THE END OF
THE PRESENTATION

19. THE FARTHEST WE EVER
SAW * IS A BLACK HOLE
6 MILLION LIGHT-YEARS AWAY
*IN JANUARY 2010

20. WE NOW SEE THE
GALAXY NGC 300
HOW IT WAS
6 MILLION
YEARS BEFORE

21. WHAT
ELSE
?*
*WITH RELATIVITY …

22. IF YOU
GO
FASTER
YOU WILL
LIVE
"LONGER"

23. WHY ?

24. WITH TIME RELATIVITY
A CLOCK IN A
SATELLITE AT
HIGH SPEED

25. GOES SLOWER
THAN THE
SAME CLOCK
ON EARTH

26. IF YOU LIVED AT
80 MILLION KM/H
AROUND EARTH,
YOU WOULD LIVE
3.6 TIMES
LONGER

28. BUT ON EARTH 250 YEARS
WOULD HAVE PAST

29. ISN'T THERE ANY
SAFER WAY ?

30. WELL …
YEAH !

32. WITH THESE
TOOLS !

33. FOSSILS
TELL US A
LOT ABOUT
OUR PAST

35. AND THE UNDERSTANDING
OF OUR ORIGINS

36. TO SUM UP :
IF YOU WANT TO SEE THE PAST
1 Go faster than the light
2 Watch the stars
3 Dig the ground

37. TO SUM UP :
IF YOU WANT TO SEE THE FUTURE
1 Go faster than other people
2
Just wait for it !

38. WRITTEN WITH A LOT OF JOY
A BIT OF SCIENCE
AND THE HOPE THAT ALL YOUR
QUESTIONS FOUND AN ANSWER…

40. … OR NOT !*
*THAT WAS NOT THE PURPOSE ANYWAY

41. THANKS FOR ENJOYING MY
PRESENTATION.
ALL COMMENTS ARE WELCOME
TO MAKE THE NEXT ONE EVEN
BETTER