Jaime Rudas's latest activity

The speed of expansion of the length of an elastic band certainly does. You could measure the stress or the strain in the band.

For example, if I have an elastic band that is one centimeter long and I stretch it for one hundredth of a second, its final length will...

I don't know how to determine whether something has physical meaning or not. For example, I can't understand why the speed at which an...

Once again: I made a mistake

Once again: I made a mistake when I said I was referring to the distance traveled by the photon.

As I understand it, the peculiar speed is relative to a comoving observer, that is, with respect to an observer whose peculiar speed is...

The fact that the peculiar speed of light is c is something I took from Davis & Lineweaver, and my knowledge of the subject isn't...

I agree

Yes, that's the case I was referring to.

What I meant is that time inside the bubble flows at the same rate as outside (and far away from) the bubble.

I don't understand what you mean, nor do I see how it relates to what I posted.

Yes, it seems we're having problems with the issue of relative simultaneity.

It doesn't seem weird to me because spacetime at the center of the bubble is flat. The extremely curved spacetime is that of the "walls"...

It seems to me that this applies to distances inside the bubble, but not to distances along a path going through the bubble.

I agree. I'm not entirely clear on the relationship of this to what I mentioned about peculiar velocity, but it seems to me that the...