What is time? Is time travel possible?

MindYerBeak · 6 May 2003 at 23:38

Originally posted by AlphaNumeric
Its impossible for something to have no thermal radiation. Nothing can attain absolute zero.

I can. Ask my ex wives.

Fusion · 6 May 2003 at 23:42

Originally posted by AlphaNumeric
Theoretically their max would be a wavelength of 1 plank length, the quantum of length. Thats equivalent to about 0.001g IIRC and a lot more than the value you said.

I quoted that figure from here

http://www.aip.org/enews/physnews/2003/split/625-2.html

MindYerBeak · 6 May 2003 at 23:44

Originally posted by woo yay

The problem with travelling at the speed of light is that you would have infinite mass, requiring infinite energy to accelerate.

Meaning to say, as Einstein would differentiate it, you would become a big, fat, bloated human being so heavy who would require so much energy to move him it would be an impossiblity. Even an Infinity Engine couldn't cope. There wouldn't be enough energy in the universe to move him.

Fusion · 6 May 2003 at 23:52

I dunno I only work here

growse · 7 May 2003 at 00:01

Who leat MYB in?

own up

pyro · 7 May 2003 at 00:20

ok, fare enough, nothing can reach the speed of light. light has the speed of light therefore light doesnt exist!

ehm, seriously now, if light can go that fast, can it eve go faster?

Fusion · 7 May 2003 at 00:27

Originally posted by pyro
ok, fare enough, nothing can reach the speed of light. light has the speed of light therefore light doesnt exist!

ehm, seriously now, if light can go that fast, can it eve go faster?

Eh! to the first bit

Nope it can't go faster otherwise I'm sure it would

Rich_L · 7 May 2003 at 00:29

Ah thats an interesting one actually,

Some physicists believe that it appears that the speed of light has been changing....

growse · 7 May 2003 at 00:39

The theory doesn't say nothing can go at the speed of light, it says that nothing with a non-zero rest mass cannot go at the speed of light. And why would light ever go faster? Makes no sense to me.

The theory about the changning speed of light is that the speed has been on the slow decline (possibly exponential decay) since the start of the universe and has pretty much levelled off now.