Time Travel ... is it really possible?

I would so so so love to do this... !!

So, where do we start? How about time? What is time? The Oxford English Dictionary defines time as "a limited stretch or space of continued existence”, or “as the interval between two successive events". We glance at our wristwatches and notice the second hand slowly counting the passing seconds. We are in our own time machines: Our hearts are pumping blood, we're breathing; we are existing through time (at least until our own personal time machines seriously malfunction).

What are the possibilities of moving through time at a rate different to one day per day? Common sense tells us that it's all nonsense - time travel is impossible. However, common sense is not always such a good guide. Some hundred years ago common sense said man could never fly; now we travel all over the world.

The commonest objections to time travel are the so-called paradoxes. For example, if we could travel through time, imagine what would happen to a time traveller if he (or she) travelled back in time and killed their own grandmother at birth. In theory the time traveller will therefore never be born, so the journey could never have been made in the first place; but if the journey never occurred then the grandmother would be born which means the time traveller would have been born and could make the journey ... and so on and so on. This is a paradox.There are two possibilities to resolve this paradox.

The first is that the past is totally defined, i.e. everything that has happened or must happen, including the time traveller’s attempt to kill his grandmother, cannot be altered and so nothing will change the course of history. In other words, the time traveller will experience endless "mishaps" in trying to kill their grandmother and will never achieve the murder, thus keeping time (or at least events) intact.

The second possibility is more complex and involves the quantum rules which govern the subatomic level of the universe. Put simply, when the time traveller kills their grandmother they immediately create a new quantum universe, in essence a parallel universe where the young grandmother never existed and where the time traveller is never born. The original universe still remains. Stephen hawking believes he can explain the origin of our universe as a variation of this parallel worlds theme.

Having explained these paradoxes how does one travel through time? The secret is to travel at speeds close to the speed of light. The main text of the web site explains this in greater detail. The obvious problem with travelling very near the speed of light is that as you approach C (the speed of light) time slows down until at C time stops. How can you go faster if time has stopped? The answer involves a complex process called quantum tunnelling and is discussed at length in the main text of this web site. Then once the velocity becomes greater than C time moves backwards and the traveller has entered the realms of negative time.

Now I'll show you what a Nerd I am....

This was tested & proven by Einstein!!!

Albert Einstein was the first to show in his Theory of Relativity that time was not, in fact, a smooth river, constant in its flow, but something that could be affected by motion and by gravity - an effect known as time dilation.

Einstein did not consider time and the three spatial dimensions as being separate, but as being linked to form a four-dimensional quantity known as space-time. Einstein's theories of relativity have been proved by numerous experiments, including one in 1971 in which highly accurate atomic clocks were placed aboard two high-speed aircraft, with another one at an airbase.

Despite staying in the same location, the ground clock was not stationary, since it was travelling at the same rate as the Earth spins. One aircraft flew eastwards from the base, travelling in the rotational direction of the earth and so moving faster than the ground clock, while the other flew westwards and so moved relatively slower. After the flight, the eastbound aircraft's clock had lost time relative to a ground-based atomic clock, while the opposite was true of the westbound aircraft's timepiece. Amazing eh?

Yeah I know, I need to go find a Delorean & look for Doc Brown.. Wish me Luck !!


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