Showing posts with label Spacetime. Show all posts
Showing posts with label Spacetime. 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
 
 

Tuesday, 14 August 2012

Einsteins field equation explained



I just recieved an email from a blog reader asking me to explain this equation;





This equation is Einsteins field equation's and put simply it is explaining that the structure of geometry is deterimed by the distribution of energy (which is a really weird idea). And it also tells's us that gravity can serve as it's own energy source (as gravity is a type of energy form in itself).

This equation once you get your head around it is really simple, what first got me when I was trying to understand this equation was that gravity was it's own energy source, but don't let that fuck you up just as long as you approach Einsteins equations with an open mind you can wrap your head around them.

(My awesome art again)

So now you know both the meaning and the what the left hand and right hand side in the equation. Now if your a guy you can go and impress your girlfriend with your new knowledge of Einsteins field equation's because I hear chicks really dig that :)

Monday, 13 August 2012

What was there before the big bang?

The 'what was there before the Big Bang' Bullshit


Despite what your school teacher said about there being rocks and dust and shit before the big bang, there was nothing before the big bang, your teacher was either an idiot or was high on the gas fumes in the science lab.


Remember in a previous post when I said 'there was no before'. Kinda explains it. You see, time did not exist before the big bang. Time is a result of the expansion of the universe itself and without a Bang or God or whatever it is you believe created the wonderful place in which we inhabit to set off the expansion of the universe there would be no time. And without time there is no 'before'.