Recent content by wilgory

Is there anyone that doesn't like this song?

BoomBoom, I think the idea that we see back in time is misleading. What we see when looking through a telescope is an image of what a galaxy looked like when it emitted the light. We don't really see "back in time". Not being a cosmologist I can't say for sure but I think the models of the...

madphysics, This link will help sort through the different theories on the web. http://www.math.ucr.edu/home/baez/RelWWW/HTML/wrong.html The other links on this thread are excellent places to expand your understanding of what is "known" about the universe. I may be able to help with...

BoomBoom and madphysics, If you consider that space-time is what is expanding, you can imagine the "center" you refer to also expanded with the rest of the universe so the "center" is everywhere. We know this because the cosmic background radiation is uniform in all directions. If there was a...

BoomBoom, It may help if you consider the raisinbread analogy. Think of a loaf of raisinbread as it cooks. It expands in all directions with the raisins moving away from each other. Think of each raisin as a galaxy. An observer on one raisin sees the others moving away. While an observer on a...

edit due to duplicate post

Whatever happened to the term "continuum". If universe means "everything that is", then multiverse would imply "multiple everythings" which is contradictory. We may never know if there is anything beyond our space-time continuum. If there is, then it should be considered part of the...

Wallace, Thanks for the response. You first say the question is unanswerable but then give the answer, No. This is confusing. For the sake of discussion, let's say in the same way we determined the rotation of the Milky Way, We were able to observe a rotation of the continuum. Would this...

The simple answer is that there is only one path for the current to flow through. The total resistance is what would regulate the current. It would be the voltage drop by each resistor that would vary according to the value of the resistors.

I understand that motion is relative and that everything is in motion. My Questions are : Is there such a thing as universal motion? In other words, is the space-time continuum rotating or moving in any way as a whole entity? Can this be determined using the cosmic background radiation...

A point isn't really an object. It represents a position in space or on a grid. It is dimensionless because it does not exist. Since it doesn't exist, to call it infinite would not be correct.

Physics-Learner, Yes, I accept General Relativity as a valid theory that has passed all test to date. Since the space-time continuim is a basic part of that theory I see no reason to doubt it. In a couple of weeks we will get the preliminary results of the Gravity Probe B experiment which will...

Talks, There are none so blind as those that will not see!

Talks, This is from the Wiki page on Special Relativity. The discussion given above has been confined to what is known as "flat space-time". The general, differential form of the space-time interval is given in the article Special relativity. The modern description of the universe uses the...

Talks, It appears to me that you are still thinking of the expansion as a 3D explosion. I don't know how well you understand the math required to fully understand a 4D expansion. I personally have to rely on the cosmologist due to my ignorance when it comes to the higher levels. I know of...