Showing posts with label arrow of time. Show all posts
Showing posts with label arrow of time. Show all posts

Thursday, 23 August 2012

Can time travel be done?

As it just so turns out...



I have a theory. As with all my truly terrible theory's, it is very rough around the edges, but it's not like anyone's gonna actually be stupid enough to try it so whats the harm done in sharing?  (Unless of course you do try it, so in that case WhatTheJunk blog is not responsible for your stupid ass.)



So, for years people have always wanted to go back in time to correct mistakes they have made in the past or meet their future relatives 60 years in the future. (Oh and you can't change anything in the past, but I'll explain later.) It's been one of human kinds desires to be able to jump any where in time for a while now.

Why we can't leap frog through time yet.

It is theorised that to be able to time travel we would have to travel at the speed of light which is 3x10^8 m/s (that's very fast) but travelling at this speed would cause a very painful and permanent case of death. And the reason you would be dead is because of the amount of energy used to propel you at this speed and the energy that would be created by you being propelled at this speed would most likely burn and disintegrate you alive. Sounds like a fun past time. But I have been thinking and I thought a Faraway mesh cage maybe able to solve this small problem of death.

A Faraway cage was invented by a dude called Micheal Faraway in 1836 and it creates a shield and blocks external and non-static fields. I hypothesise you would need a Faraway cage/mesh to conduct the energy that would be produced when travelling at such a high speed. I'm not sure of the in's and out's of this and I know a Faraway cage or mesh would not be able to protect you against the thermal energy that would be created when you do a 'time jump' but its a start nonetheless.

 

But how would we be able to travel at the speed of light?

I have no idea. But these guys came pretty close to doing so...
 
But please don't do this to your sleeping friend.
 

Lets say Hypothetically this was correct. What would happen when we time jump?


Lets say hypothetically you found something that could allow you to travel at the speed of light (and no a giant slingshot will not do) and hypothetically the Faraway mesh enabled you to time travel without being vapourised and conducted the energy. It is theorised  that when travelling at the speed of light, you would see time bend. And when two folds bend, a tremendous amount of energy is required to absorb the jump. As energy is like a bank, when you overdraw you need to pay it back. But because no one that we know of (other than Doctor Who) has travelled to the past, we don't know how to 'pay back' the energy that we have used to travel to the past. So it could kill you, the people around you or take the energy from surrounding electrical equipment when it 'withdraws' its energy back. Who knows? But it all sounds too scary for me and Im quite content in the time that I live now. What about you?





'Once confined to fantasy and science fiction, time travel is now simply an engineering problem.'


-MICHIO KAKU, Wired Magazine, Aug. 2003
 
 

Monday, 13 August 2012

Why does smoke never go back into the chimney?






Why does smoke never go back into the chimney? Why does a drop of water never reform?

These are a few of the common examples of a thing called dissipation and is the principle of entropy. It is the tendency of our universe to evolve to a state of dissipation (to become increasingly disordered) and this is related to the direction of time, a result of the expansion of the universe.

You see when the Big Bang happened (if you believe in this theory) it caused everything to just blow the fuck away and is why our universe is as big as it is. Because of expansion and it is because of this expansion that we red shift. (If you don't know what red shift is look it up because it is now 9:44pm where I am, but you shouldn't need to because its not related as such to dissipation).

But what will happen if the energy of the quantum void becomes to weak? Or if the gravitational forces outweigh the forces of expansion? Well, according to some scientists, alike to a rubber band our universe will snap back when the forces of expansion prove to weak to the forces of gravity, and it will be that moment that the universe will end its phase of contraction. Also called the Big Crunch which is predicted to be in 2092.

 But what will become of time? Will it reverse?



I dont think anyone know's the answer.