This is my theory, but its not really a theory since scientist have proven that this could work. OK. there is 2 ways to time travel. 1: objects that have mass drags on time. OK you go to the center of the milky way and you find a black hole. the black hole is so massive and its gravity is so powerful it drags on time. pretend humans created a spaceship that was extremely fast. the spaceship could orbit the black hole in 14 days, in the spaceship,but on earth the people watching would see it take 7 days. the closer you are to the black hole the more it drags you down on to time. but earth is so far away it doesn't get inflicted in this. OK pretend you were 30 when you were orbiting the black hole. after 5 years you come back you only aged 5 years, but the people on earth aged 10 years because the black hole dragged you with it on time.
The second theory is more confusing please watch the show:
Stephen Hawkins, into the universe (time) on national geographic for the second theory.
I allege one simple impossibility: move with acceleration of X2.
'Time travel' as most understand it is based on Einstein's theory of relativity. Basically, an object in motion experiences time 'slower' in comparison to an object at rest. Provided that a universal notion of time exists, an object at rest will experience time at the same rate. But, if the object starts to move (i.e. are sitting in the park reading a book vs. running around the park), time will appear to pass quicker around the object than it would from the perspective of the object.
Now, the speed of humans is so slow this effect is infinitesimally small. Say you had a supercar that could move at 0.9 times the speed of light, though. Now the effect is very observable. If I drove my supercar for 1 minute at 0.9 times the speed of light, Einstein showed that in my 1 minute of experience, roughly 2.29 minutes will have gone by to a stationary observer. If I drove in my supercar for a week, 16 days will have gone by at the local Burger King.
If you could get very close to the speed of light, then perhaps 1 minute of your experience would be equivalent to 100 years on Earth. Effectively, this is time travel (to the future, anyways). There is no possible way to even come close to these speeds with current technology, though.
Time travel to the past is a somewhat different process, involving a thing called a wormhole. Basically, you have to find a black hole in space that is a sister black hole on the other end. The 'fabric' of the universe is made of stuff called 'space-time' (so called because bending it effects both space and time. Its like calling a bed a matress-blanket). Imagine space-time as a backyard trampoline. When your baby brother stands on the trampoline, it doesn't bend much. When the local college quarterback stands on the trampoline, it bends a lot more. The same thing happens with gravity and space-time - an object with more gravity implies a greater bend in space-time. When space-time bends, space and time are both experienced differently (interestingly enough, time appears to go by faster on the planet Mercury than it would here on Earth)
A black hole is when gravity becomes so much, the fabric tears. A sumo wrestler just fell through the trampoline. Now, space and time no longer function correctly. As to what really happens, no one knows - Stephen Hawking made some progress, but all research is far from definitive. Say the trampoline was really big - 50' by 50'. If this 'hole' in the trampoline were to connect to another hole in the same trampoline, then its possible that you could go down one hole and come back up the other.
Thats how a wormhole works - going down one trampoline hole and up another. Because the universe is made of space-time, going off-grid and coming back on could drastically change the place and time you end up. In theory it would be possible to end up in a time period earlier than when you started, thus 'time traveling' to the past.
Time machine doesn't work, but in the movies the machine has these engine and these gears that pushes the machine into space so it can reverse the time and or goes forward.
It takes you from place to place
a time machine travels trough time
You don't, its fiction.
The work done by a machine is called work output
we can save our time by using machines and a machine can perform the work of hundred men.
Machine work
the work a machine does is the work output what it takes to do the work is the work input
The energy that is used to make the machine work.
Force is the ratio of the amount of work the machine can do over the amount of time it takes to do the work.
The newest revision of Apple's AirPort extreme, with the latest firmware updates applied, will work with Apple's Time Machine.
No instruction manual has ever been printed, because no time machine has ever been built yet.
Machine B will use more power.
there is no way too, because time is irrelevent.
The work done by a machine is called work output
we can save our time by using machines and a machine can perform the work of hundred men.
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New inventions such as the washing machine benefited women because it enabled them to have less work and more free time.
Make sure you make the right number of sacrifices
They make your work easy in less time
It doesn't it's a fictional movie.