The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » sci.math.* » sci.math

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: where's the center?
Replies: 1   Last Post: Jun 21, 2013 4:19 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Rich Delaney

Posts: 392
Registered: 12/13/04
where's the center?
Posted: Jun 20, 2013 10:22 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

An expanding balloon is the standard picture/analogy
to elucidate the expanding universe. OK, let's go
with that; an analogy ostensibly represents an ANALOG
to the subject, right?

The balloon is a 2-D surface, but in 3-D space,
there's a center. Inhabitants of Balloon World
are stuck within that surface. They cannot point
toward the center, but we can see it.

Now, extend to our universe, expanding space, yadada.
By analogy - remember that one? - there must be a
point in some 4-D space, surrounding us, which
constitutes the center. So, the question is, can
we 'point' to it, through some 4-D mathematical
abstraction, derived from our measurements?


Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.