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TIME DILATION

TIME DILATION. A presentation by Nipun Sharma. What is time dilation?. Time dilation is difficult to explain simply, and has different explanations according to the setting. Best put, it is the slowing of time experienced by someone as they near the speed of light.

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TIME DILATION

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  1. TIME DILATION A presentation by Nipun Sharma

  2. What is time dilation? Time dilation is difficult to explain simply, and has different explanations according to the setting. Best put, it is the slowing of time experienced by someone as they near the speed of light. As your rate of speed gets closer to the speed of light (roughly 186,000 miles per second), the conception of time actually speeds down. If one was to observe you getting closer to the speed of light, it would appear that your actions were slowing down.

  3. An example of time dilation Guy on airplane Guy on earth

  4. What just happened?! Well, there are some things we must take into consideration. Since the airplane was moving faster than the little geek on earth, time actually slightly slowed down on the plane. “But why don’t I come out 50 years younger than what I should be when I get off a plane after a trip?” Because the airplane isn’t moving nearly fast enough for someone to actually sense the slowing of time. In fact, you’d have to reach half the speed of light to merely experience a slowdown of 15%! However, with the atomic clocks, we are able to detect the extremely small difference in time.

  5. Further Explanation As you near the speed of light, time slows down. If you’re going at 10% of the speed of light, time slows down a mere .5%. Likewise, if you’re going at 50% of the speed of light, time slows down 15% (a 3000 percent increase). If you’re going at 90% of the speed of light, time slows down nearly 60%! And going at 99% of the speed of light slows down time about 85%! You probably noticed that the increase of the slowing of time is quadratic, rather than a steady, linear increase. For example, look at the graph to the left. Notice how the line at the beginning drops only steadily, then takes a huge dive near the end (a quadratic slope).

  6. Freezing Time Why not? Because, like said, the graph is quadratic. This means that while the faster you go and the closer you obtain to freezing time, you can’t freeze time because you would have to be traveling at the speed of light itself. According to modern theory, objects with a mass cannot reach the speed of light. Because the “slope” of time dilation is quadratic, there are two things that are certain: • The closer you are to the speed of light, the more time slows down to a certain degree. • With our current knowledge, time can not be totally frozen.

  7. So, what's the big deal?? Time dilation is actually a very big deal: it holds some of the thousands of keys to unlocking time travel. A man could go on a super-fast ship for 50 years, and come back only 1 year older, also feeling as if he was only on the ship for 1 earth year. Scientists are looking into how this works and how it could be used to our advantage. It is obviously not that simple. Before actually attempting this first-hand, scientists would need to find a way for humans to travel close to the speed of light, whether it be on a ship, or somehow through a wave that is nearly as fast as light, such as cosmic rays.

  8. The Discovery Of Time Dilation Albert Einstein (born 1879, died 1955) is credited with the creation of the Theories of Relativity. Within this theory, Einstein says that time changes with motion, like how time changes from in an airplane, to on the earth. Previous scientists thought similarly as well.

  9. Future Uses If scientists are actually able to find a way to get a human travel close to the speed of light, we would be able to do several things in the future. We would be able to preserve humans to live longer than their counterparts on earth. When they come back to earth, several years, decades, or even centuries could have passed, and the human would be only a few years older than when they left.

  10. CONCLUSION Time dilation could very well be the ultimate way for humans to “live longer”. It is one way to unlock the secret of time travel, as well as get a more familiar feeling of time. As humans continue to make advances in the field of time and science, we will continue to find out more and more about time and its mysteries. Perhaps one day, we’ll find a way to actually freeze time, or even go back in time.

  11. Special Thanks GRAPHICS: http://sprott.physics.wisc.edu/fractals/collect/1998/?plain http://nces.ed.gov/nceskids/graphing/ http://en.wikipedia.org/wiki/Time_dilation http://r.office.microsoft.com/r/rlidAppFolder?clid=1033&p1=powerpoint www.goodexperience.com/broken/i/04/01/ MUSIC: http://share.studio.adobe.com/axBrowseSubmit.asp?c=183

  12. Bibliography

  13. The End I hope you enjoyed my presentation, and learned something valuable from it as well!

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