IS TIME TRAVEL ACTUALLY POSSIBLE? – Just imagine how many of us would love the opportunity to whizz back in time and change a few of the mistakes we’d made; or even changed a few numbers on a lottery ticket.
It all seems like pure fantasy but Professor Brain Cox recently made a claim at the British Science Festival that time travel is actually possible.
Before you go off chomping at the bit to built your time machine you ought to be aware that there’s a catch.
According to Professor Cox time travel is indeed theoretically possible but one would not be able to travel into the past only more forward into the future.
“It’s to do with building these things called wormholes; shortcuts through space and time. But most physicists doubt it.
Professor Stephen Hawking came up with the ‘chronology protection conjecture’ – physics we don’t yet understand that means wormholes are not stable.” Professor Brian Cox
Wait a minute because there’s another catch; for according to Professor Cox anyone achieving such a feat would not be able to return.
Now that actually makes perfect sense for if you can’t travel back in time you certainly wouldn’t be able to return from whence you came.
Confused? It’s quite simple really… you can go forward in time but not backwards and theoretically a person could travel into the future by as much as 10,000 years.
So how does time travel, in theory, work? Professor Cox explains that the calculations are quite complex but in theory people would need to travel at the speed of light to achieve it for the closer one travels to the speed of light the more time slows down.
If a person could slow down time by a significant amount then that person could be transported thousands of years into the future.
I know you’re probably wondering where on earth you can buy a De Loren but wait a minute, just slow down; there’s more.
During Professor Cox’s speech a member of the audience asked him if a time machine could be built; to which he responded ‘yes’; but it would only be possible to move forward and there would be no return.
Professor Cox also astounded the audience when he declared that time travel had already been achieved; albeit on a very small scale.
Professor Cox also believes that with the ongoing advancements of technology it would one day be possible for people to travel into the future.
According to Einstein’s Special Relativity time travel is based on two principles. The principles include the principle of relativity in which states that the laws of physics do not change; even when objects move at a constant speed relative to each other.
Once established the principle of the ‘speed of light’ must be examined; which is the same for everyone, regardless of how their movements related to the light source.
The principle is that if two objects are moving through space and wants to compare what they can see, the only things that matters and helps determine this comparison is how fast the two objects are moving relative to each other.
Did you get all of that? The special theory specifically includes movement in a straight or uniformed line at a constant speed. If any object starts travelling faster, curves or veers off course, then special relativity no long exists or applies.
So there you have it; in theory you can time travel but only to the future and then you’ll be stuck there. I guess I’ll just have to go back and cover up my De Loren until the scientists come up with something a little more appealing.