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and Time Travel!
Oh My! A Presentation
On the Did you know... Black Holes! Why should we study the possibility of Time Travel? Worm Holes! Work Cited By: Marissa Ambrosio
Period:2 Were time traveling right now! We travel through time at a rate of 1 hour per hour. So, technically, we are always traveling through time. To travel faster than 1 hour per hour would be traveling quicker through time, This is Albert Einstein's Theory of Relativity. Black holes are places where gravity has become so intense that even light can't escape it's pull. In fact, it's pull can overwhelm all other forces in the universe! But how do black holes relate to time travel? Worm Holes are shortcuts connecting two regions of spacetime. But, before you think you can just jump in any worm hole for a quick trip, theres the problem of even keeping one open long enough to get through. Despite that minor roadblock, we believe if we find or create a specific type of matter (called exotic matter, negative energy) than can keep a worm hole open, then we can travel anywhere and anywhen! If all of this stuff relating to traveling through time is so theoretical, then why are scientists wasting their time on a project that may be impossible? Well, through studying the possibility of time travel, we are able to research the very foundation of physics and the way we perceive the world. By studying something like worm holes, we are trying to understand not only time travel, but also Einsteins theory of relativity. (2000). Time travel. Retrieved from
Harris , W. (2011). What if you traveled faster than the speed of light?. Retrieved from http://www.howstuffworks.com/science-vs-myth/what-if/what-if-faster-than-speed-of-light.htm
Rappaport, H. (2011). 5 time travel theories from science fiction that could still be possible. Retrieved from http://www.dvice.com/archives/2011/09/5-time-travel-t.php
Lovgren, S. (2010). Are worm holes tunnels for time travel?. Retrieved from http://news.nationalgeographic.com/news/2005/09/0916_050916_timetravel_2.html
(2010). Is time travel possible?. Retrieved from http://spaceplace.nasa.gov/review/dr-marc-space/time-travel.html
Whitlock, L. (1997). Con humans go back and forward in time?. Retrieved from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970326a3.html
Del Monte, L. (2013). Time travel to the future is real!. Retrieved from http://www.huffingtonpost.com/louis-a-del-monte/time-travel_b_2972750.html Possibility of time travel! Albert Einstein's Theory of Relativity states that space and time are really different aspects of the same thing- spacetime. This theory states that time goes slower for you than those you've left behind when you travel closer to the speed of light. Einstein came up with this idea after examining simple, day to day occurrences that didn't add up. The Speed of Light!
The speed of light is a key factor to the concept of time travel. Light travels at a constant, finite speed of 186,000 mi/sec. Since space and time are the same thing, the faster you move through space, the faster you move through time. Example of the Theory of Relativity:
Everyday Occurrences: For instance, a person with a clock on a train would notice that the hands n their clock moved slower than the hands of a clock that is stationary. Hence, the person is traveling a minuscule amount into the future. Because Einstein noticed small, and seemingly unimportant things like this, he came up with his theory of relativity. Theory of relativity example: If you were 15 and decided to leave Earth traveling 99.5% the speed of light (impossible due to our current technology, but follow me for a second), and spent 5 birthdays in space; when you return home all of your classmates would be 65. Time has passed more slowly for you as you were traveling faster in space; If you started your journey in 2003, it would have taken you 5 years to travel to 2053! The Theory Of General Relativity
Einstein also came up with a theory relating to black holes, his theory of general relativity. This theory states that time passes slower for objects in gravitational fields (like Earth), then objects farther. There are distortions in spacetime near black holes, where gravity is intense. Those distortions can be used another idea involving time travel, worm holes! Kerr Black Holes
If you were to travel into a black hole, what would happen to you? Based on the information we have, you'd be crushed by the force of gravity inside of the black hole. Though, maybe not, if it's a Kerr black hole. This theory, which is shaky at best, explains that a Kerr black hole, or a rotating black hole, is created by a collapsed neuron star maintaining singularity. This, supposedly, would stop anything entering the black hole from being crushed like a grape. But where would you end up after exiting the black hole? Theoretically you'd exit at a white hole, which is a hypothetical region of spacetime that is the exact opposite of a traditional black hole; it pushes things out! When you exit the white hole, you would be in a completely different area of space and time. Unlike Einsteins theory of Relativity, which strictly says that if we were to travel in time it could only be to the future; or anything involving black holes, which is extremely theoretical, worm holes seem to be somewhere in the middle. The theory of travel by worm hole is accepted as possible with a dash of science fiction. It creates the possibility of travel into the past and future, depending on the worm hole. As it is just a shortcut between two areas in spacetime, you could end up any where and when! Many prominent physicists, such as Steven Hawking, have researched travel by worm hole extensively. Time travel through worm hole is considered possible because you would be traveling between two places in spacetime faster than the speed of light, which, as always, opens the possibly of time travel. This a diagram depicting travel through a worm hole. Why we can't jump to light speed just yet...
There is one key factor in all of these ideas: traveling at (or near) the speed of light. But, we lack both the technology and funds it would take to build a ship capable of traveling at that speed. It can be explained using Einsteins famous equation, E = mc², where E is energy, m is mass and c is the speed of light. So, with this equation in mind, you can see that to travel at the speed of light the mass and energy used to travel would be incredibly increased. Untill we figure out how to control that, jumping to light speed isn't feasible. Science Fiction and time travel There is plenty of media that demonstrate what imagination and a spark of science can bring to life! Here are a few popular ones:
H.G. Wells "The Time Machine"
Back to the Future
Bill and Ted
While the ideas presented on these shows, movies, and books seem unorthodox, even including all I've talked about, there are small pieces that have the potential to be true. Media like this shows younger generations that there are cool and interesting things to be found when studying science, and it opens there minds to possibilities they've only imagined. Is time actually linear? Or is it, as the Doctor just said, a big ball of timey-wimey stuff? Well, we perceive time as linear, because while we can move slower or faster through our time line, we still have to stay in our own time line. But, even though we have to stay in our time line, time is indeed relative. This is explained further through the theory of relativity. http://www.pinkraygun.com/2010/08/13/7-sci-fi-fantasy-accessories-to-love/time-turner-2/comment-page-1/ http://www.google.com/url?sa=i&rct=j&q=delorean+back+to+the+future&source=images&cd=&docid=HL8u_6JpjWkcQM&tbnid=mwZbOec2mM2-xM:&ved=0CAQQjB0&url=http%3A%2F%2Fwww.nonstophits.co.uk%2Fback-to-the-futures-delorean-made-into-electric-car%2F&ei= ambient-lullaby.deviantart.com www.yourcollegeplanners.com - georgexlin.com www.vinylonthego.com ladygeekgirl.wordpress.com scifi.stackexchange.com pbs.com www.ign.com - www.jacobboyle.com