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time travel

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Maddy Chad

on 13 June 2013

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Transcript of time travel

By; Nadia H. and Maddy C.
Time Travel, Black Holes and Space
To Become a Physicist
After a Ph.D.
Recent advancements in time travel
How math makes the job easier
How Math is used in Time Travel
What the Job Would be like Without the use of Math
To study Time travel, first you need to become a physicist and study the sub-topic of space , black holes and worm holes.

You need to major in physics in university
first year: mechanics and electricity and calculus
second year: Second year mechanics and EM theory
Third year: a selection from thermodynamics, statistical mechanics, beginning atomic and nuclear theory (and astronomy if you are going to study time travel)
Fourth year: elementary quantum mechanics
To become a physicist after a Ph.D: there are three sources
government
the industry
a university
Government work would involve setting standards at government facility. Government jobs pay well, but you will never become affluent working for the government.

Working for the industry has it's ups and down and you will never have much job security, but the pay is quite good and there are alot of jobs in the field.

Working at a university is probaly the best option and you can work on anything you want, but jobs are scarce.
Physics, a branch subject of science, studies forces and the impact they make on the environment. It also studies energy and matter in space and time and how they are affiliated with each other.

Physics is also a form of measurement, using mass, length, time and electric current. There are also three other forms of measurement: moles, which measure the quantity of matter, candelas, which measure the power of light, and the kelvin, which measures temperature
Time travel is a controversial topic in the science community because most do no think it is possible to be able to jump through the past, present and future. But some scientists think it will happen, maybe not in our lifetime, but one day.

Scientists from Hong Kong have proven that a photon cannot travel faster than the speed of light, going along with Einstein's theory of the latter. And because nothing can travel faster than the speed of light, they believe one cannot time travel.
There are many equations that are involved in time travel. The original proposition of actual time travel was by Einstein and his theory of general relativity. He based the latter of of Isaac Newton's law of universal gravitation.

Einstein's theory of General Relativity:
There would be no job without math. All it would be is a bunch of intellectuals sitting around wondering how things work. Trying to figure out how time and light work without the use of math is like a cat trying to tie shoe laces.
Einstein's theory of General relativity
Conceding to general relativity, the observed gravitational effect between masses results from their warping of the space time continuum.

General relativity has refined into a fundamental tool in modern astrophysics. It helps astrophysicists understand black holes.

General relativity is also part of the structure of the standard big bang model of cosmology

In simpler words, It is Einstein`s theory of how gravity works. He based his theory off of Newton`s idea.
Black Holes
A black hole is dominion of the space time continuum in which gravity hinders everything, so that not even light can escape. The theory of general relativity predicts that an adequate mass will cripple the space time continuum to form a black hole. Around a black hole there is an area named in mathematical terms, an "event horizon" AKA the point of no return. Once you are in, there is no coming out, unless you live in a comic book. Black holes of cosmic mass are said to form when stars of monumental size start to deteriorate at the end of their life cycle. You can determine the size of a black hole by the stars that orbit said black hole. Black Holes are said to be at the center of every universe.
Worm Holes
Also known as an Einstein-Rosen bridge, named after Einstein and his long time partner Nathan Rosen, a worm hole is a topological aspect of the space time continuum, essentially, a short cut through the space time continuum. A worm hole is, in method, a tunnel between two different points in time and space. There is no pragmatic evidence of actual wormholes, but on an analytical level there are credible solutions to the equations of the theory of general relativity which include worm holes.

There are two types of worm holes. The first is the Schwarzchild worm hole in the Schwarzchild metric representing an eternal black hole, but it would close to quickly for anything to go through. Second, would be a traversable wormhole, which could be used from both ends, but would only work if exotic matter with a negative energy density could stabilize it.
Space
Space: the three-dimensional extent in which objects and events have related reference and direction.

Outer Space: the vacant space between celestial bodies.

Outer space is not entirely empty, but contains a hard vacuum small body of other particles such as hydrogen and helium as well as electromagnetic radiation and magnetic fields. The main temperature in space is around 2.7 kelvin which is about -270.45 degrees Celsius, so the human body would immediately shut down and freeze. Basically the human body in space is a bad idea, Your lungs would rupture and your eardrums would explode. Because of the lack of oxygen in space , all the oxygen in your body would travel to your lungs and you would fall unconscious and you would proceed to die of hypoxia.
What's Else is Out There?
Aliens have been popular in science fiction for quite a while. Today alien's are talked about in everything from books to movies to video-games. The infamous little green guys from far off planets have never been proven to be real but that has never stopped people from looking. The U.S. government has three ways of looking for life out there. Earth and the rest of our solar system rotate within the milky way. Our milky way is about 100,000-120,000 light years in diameter ( 1 light year is equal to about 10 trillion kilometers) and contains 100-400 billion stars. But we are not the only galaxy out there. There are so many galaxies out there it's not even funny.
Time Travel
Time travel could hypothetically entail moving back wards in time to a moment prior, as well as en route to a moment in your future.

To travel into the past you would need to travel faster than the speed of light, have help from the use of cosmic string or with a worm hole and Alcubierre drive .
To travel into the future one could use time dilation under special relativity or using time dilation under general relativity or not even using relativity at all. You could hibernate for long periods of time or by using suspended animation.
Traveling into the past
Traveling into the past is difficult. If you travel into the past you could create a paradox in which you were never born if you go back to far or if change some thing that happened a few years ago, you could come back to an entirely different reality. That might be a good thing, it might be a bad thing. The Novikov self-consistency principal states that a traveler into the past cannot change the past, he was always apart of it.
Traveling Into the Future
Currently people can travel into the future and have done it already have succeeded at doing this a handful of times. Every time a spaceship blasts off into our atmosphere, the travel into the future just a fraction of a millisecond. But if you wanted to travel off into the future, say five years, you need a device that can defy gravity as well as travel faster than the speed of light
Time Travel in Fiction
Time travel and the exploration of other world is very popular in modern television, movies and literature. In television the 50 year long television show, Doctor Who , focuses on a time traveling alien from a far off galaxy who has a soft spot for British Humans and Futurama an animated series about ,a kid from 2000 who accidentally gets cryogenically frozen ends wakes up on New Year`s eve in 2999. In movies, there are the ever so popular E.T., a cute little alien with glow stick fingers who is far from from home, Back to the Future, which stars a teenager who travels back 30 years to unfortunately attract his mother's attention in a bad way, and the terminator, where a cyborg from the year 2029 goes back into time to 1984 to kill the mother of the future man who will save the world over run by artificial intelligence. In literature , The story of Rip Van Winkle who falls asleep and wakes up 20 years later and A Wrinkle in Time, where a girl and her brother travel to a parallel universe.
Fin
Time
Time: A dimension in which events can be ordered From past, present and future and also the duration of events

Time Travel: the concept of traveling between two different points in time and space
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