The document discusses different aspects and theories of time travel, including: 1) It explores Einstein's theory of general relativity which seems to allow for the possibility of backwards time travel if space-time can curve enough. 2) It addresses that going forward in time is relatively easy, while going backwards is much harder due to the challenges of significantly warping space-time. 3) The document discusses that time travel may be possible if there are differences in the flow of time between people, for example if one was able to travel at speeds close to the speed of light relative to others.

1. Time Travel By Ankush M. Tayade Stud's Of Electronics & Telecommunication DES’s COET Dhamangaon Rly.

2. This ppt Is Dedicated To Nature

4. Afraid of the Dark? Who remembers trying to race against light so you could get in bed before it got dark? Turned out light was really fast If only we had a time machine Note: All The concept On that ppt are concesion to NASA & Stefan Hawking Theory

6. If we had very fast spaceships, this would allow us to observe some crazy things

7. For example

8. The twin paradox

9. But we don’t need a spaceship

10. A regular passenger jet will do

11. Or even just a tower!Note: All The concept On that ppt are concesion to NASA & Stefan Hawking Theory

13. Going back is much harder

14. But Einstein’s theory of general relativity seems to allow it

15. It depends just how much space-time can curveNote: All The concept On that ppt are concesion to NASA & Stefan Hawking Theory

17. Not just some replica of it

18. It’s all relative

19. For me to time travel, there would need to be a difference between the speed time passes for me and the speed time passes for someone or everyone else Note: All The concept On that ppt are concesion to NASA & Stefan Hawking Theory

22. 1-Width

23. 2-Height

24. 3-Length

25. 4-Time Example The laws of physics actually accommodate the notion of time travel, through portals known as wormholes. Note: All The concept On that ppt are concesion to NASA & Stefan Hawking Theory

26. Special Relativity * If we could Travel faster than light ,One could also go Back in time Note: All The concept On that ppt are concesion to NASA & Stefan Hawking Theory

27. V Thanks'

30. Not just some replica of it

31. It’s all relative

33. That the past no longer exists

34. That the future doesn’t exist yet

35. That only the present time exists

37. Physicists say that it is… but what about the logical contradictions that would result?