Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Time Travel

No description

Ashley Hong

on 21 May 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Time Travel

How Time Works
-New Oxford American Dictionary defines time as the indefinite continued progress of existence and events in the past, present, and future regarded as a whole
-We can’t see it or feel it. We have come up with ways to measure time that are totally arbitrary (clocks, calendars, etc.)

-Newton believed in absolute time (separate from space)
-Einstein suggests time and space are intertwined in his Theory of Relativity—known as space-time
-Space-time is warped by matter and energy
-Large bodies warp space-time “blanket”
-Someone will experience space-time differently at various points
-Time is affected by gravity, velocity, energy, momentum

Gravitational Time Dilation
-Difference of time passed between two events measured by observers in different areas of gravitational force
-Time passes slower when the atomic clock is closer to the source of gravity (lower gravitational pull)
-Einstein predicted this in his theory of relativity
-Has been confirmed by general relativity tests
-clocks on trains, planes, satellites
-Twin Paradox (E=mc^2)

Gravitational Time Dilation (cont.)

-Was confirmed directly by Pound-Rebka experiment—gravitational redshift experiment (running clocks)
-Gravitational lensing effect-mass bends light and causes it to refocus somewhere else
-Strong-visible distortions
-Weak-only detected by analysis
*changes velocity of light by bending
*light follows curvature of spacetime
*may result in multiple images
-Shapiro delay
Time Travel
Ashley Hong
Nicole Lee
Sue Park

Time Travel
Moving between different points in time
H.G. Wells
-Born on September 21, 1866, in England
-Accident in 1874 left his leg broken; devoted himself to reading books
-Attended various schools, such as Thomas Morley's Commercial Academy, National School, Midhurst Grammar School,  and the Royal College of Science 
-Wrote many books;  The Time Machine, The Island of Doctor Moreau, The Invisible Man, The War of the Worlds, When the Sleeper Wakes, and more

Space-Time Continuum
- Three dimensions: length, width, depth
- Time is fourth
- Time can't exist without space, & vice versa
- Object in motion experiences time at a slower rate than one at rest

Time Travel Into the Past
-All methods of time travel back onto the past is all theoretical
-White holes
-Black holes

Time Machines
- A machine capable of transporting a person backward or forward in time
- Black Holes, White Holes, Cosmic String
- Wormholes
- Grandfather Paradox

1. Who wrote the Time Machine?
2. What was Einstein's theory about spacetime called?
3. What is time affected by?
4. Explain the twin paradox.
5. Explain E=mc^2
6. Is time travel possible?
-Coined the term “time machine”
-Considered one of the first fathers of science fiction
-One of the first authors to integrate science and logic (or “evidence”) in time travel stories
-The method of time traveling depicted in The Time Machine is the most commonly thought method.
-Thought time as a fourth dimension ten years before Einstein’s theory of relativity was published

H.G. Wells and Time Travel
Time Travel into the Future
-Everyone time travels into the absolute future
-To travel into the distant future
-exploit space-time (gravitational time dilation)
-travel at the speed of light (186,000 miles/s)

Traveling at the Speed of Light
- Speed of light: 700 million miles/ hour
- E=mc^2
- E=energy, m=mass, c=speed of light (constant)
- Faster object moves, greater its mass
- Time dilation
- Time runs more slowly for rapidly moving objects
- High acceleration = high gravitational mass

1. H.G. Wells
2. Theory of Relativity
3. Gravity, velocity, energy, momentum
4. The twin closer to the source of gravity ages slower
5. E=energy; m=mass; c=speed of light. Energy is directly proportional to mass
6. theoretically by traveling faster than the speed of light; worm holes, black holes, etc.
Full transcript