Thread: Why does everyone assume the speed of light is the fastest we can go?

1. Originally Posted by Kryos
No, I could not imagine. It would be billion times the energy of the biggest H-bombs ever created.
Black Hole inc

2. Originally Posted by Kryos
No, I could not imagine. It would be billion times the energy of the biggest H-bombs ever created.
Oh, it will be a billion times a billion times a billion times a billion times more.

3. Originally Posted by mahananaka
Even with the general scientific consensus around the limitations of regular speed in the universe there are some known issues. I believe they have observed particles that come from our sun that have such a quick half-life that in the time it takes light to get to earth they shouldn't be observable. Thus somehow these particles travel faster than light. Additionally this limitation around the speed of light is based on your velocity equaling the speed of light. That is why in science fiction currently all means involve side stepping this. Like a warp drive. You're not moving, space around you is moving. Or using a technique to warp space time to fold it and create a worm-hole that you travel between (turn your 4 year journey into a 4 mile trip). Some are currently more far fetched than others. In the mass effect franchise the mass effect relay's creates a bubble around your ship and the bubble lowers the mass of things inside the bubble to zero thus avoiding the E=MC^2 issue.
If you apply force to a massless object, how quickly does it accelerate? F = ma, but if m = 0, shouldn't that make it impossible to exert a force upon it, since at any acceleration, F would equal 0 as well?

4. Semaphore as much as I hate to admit it you were right.

From: "Lawrence Krauss" <[email protected]>
Date: Jan 7, 2013 12:43 PM
Subject: Re: An embarrassingly trivial question i still hope you will answer.
To:
Cc:

spatial curvature... and it is just portion of space we can observe

On Jan 7, 2013, at 8:41 AM, wrote:

Dr Krauss,
A friend and I were having a discussion regarding cosmology. Specifically, it was related to the (flat) shape of the Universe (as told in your "A Universe From Nothing" lecture re: the possibility of a zero total energy universe.).

The question came up, "Well which part of the Universe is he talking about?". Is the entirety of spacetime flat? Or is it just space by itself? It has been my understanding to this point that, when discussing the universe in the cosmological sense, it complicated things to separate space from time while my friend believed (based on wording in papers) that it was merely the spatial portion of the continuum being referenced.

Lawrence M. Krauss
Foundation Professor
Director, The ASU Origins Project
Co-Director, Cosmology Initiative
Assoc. Dir, Beyond Center
ARIZONA STATE UNIVERSITY
College of Liberal Arts and Sciences
School of Earth and Space Exploration
PO Box 871404 | Tempe AZ 85287-1404

5. Lawrence Krauss answers random emails? That's pretty fucking awesome of him.

Lawrence Krauss answers random emails? That's pretty fucking awesome of him.
Indeed it is. Didn't even take him that long.

7. Typical professor email; succinct.

8. Originally Posted by Rukentuts
Typical professor email; succinct.
That's exactly why I like it.

I'm actually pretty stoked to be told I was wrong in this case.

9. Originally Posted by Laize
Semaphore as much as I hate to admit it you were right.
Of course I am :3

Originally Posted by Rukentuts
Typical professor email; succinct.
Hehe I was just thinking that.

Also I think I just found my new signature.

10. Originally Posted by semaphore
Of course I am :3
Don't get too comfortable there :P

11. This is kinda cute tbh.

12. Originally Posted by Kurioxan
This is kinda cute tbh.
Who are you calling cute!? :mad:

Also it better be me!

13. Originally Posted by semaphore
Who are you calling cute!? :mad:

Also it better be me!
Oh boy you are just... totally reveling in this "Lawrence Krauss says I'm right" thing, aren't you?

14. Originally Posted by Laize
Oh boy you are just... totally reveling in this "Lawrence Krauss says I'm right" thing, aren't you?
Wouldn't you?

15. Originally Posted by Laize
Oh boy you are just... totally reveling in this "Lawrence Krauss says I'm right" thing, aren't you?
Who wouldn't?

16. Originally Posted by Rukentuts
Wouldn't you?
I think that's hardly the point, sir.

The point is god dammit.

17. Originally Posted by Laize
I think that's hardly the point, sir.

The point is god dammit.
There there...it's all gonna be okay.

If your shame is too great, you can always commit.....sudoku.

18. Originally Posted by Rukentuts
There there...it's all gonna be okay.

If your shame is too great, you can always commit.....sudoku.
There's always someone wrong on the internet...

It's just never me

WHAT ARE THESE FEELINGS I AM FEELING?

19. What is this, I came in here expecting to see people still trying to explain stuff to people that would clearly never get it and instead I see Semaphore's victory dance and Laize admitting he's wrong? Did this thread enter an alternate reality?

20. Originally Posted by Xanjori
What is this, I came in here expecting to see people still trying to explain stuff to people that would clearly never get it and instead I see Semaphore's victory dance and Laize admitting he's wrong? Did this thread enter an alternate reality?
This is what happens when you fire three tachyon pulses from three different time periods and they converge at one point in space.

+1 to anyone who gets the reference.

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