On Jul 6, 2:53 pm, " wrote:
On Jul 6, 11:15 am, Randy Poe wrote:



On Jul 6, 3:13 am, " wrote:

On Jul 5, 4:43 pm, Randy Poe wrote:

On Jul 4, 6:41 am, " wrote:

It is confusing and error prone

What is? Did you mean to have a link in your post?

- Randy

The very same link that you gave about redshift versus distance.

I guess you mean this one:

http://www.astro.ucla.edu/~wright/sne_cosmology.html

yes

It was irritating to make me dig for it. So I don't start
this post in a good mood.

Sorry, thought you knew it off hand cause it's the only one you gave
me about redshift I think?

I was
wondering if that chart was modified in the following way below what
it would mean:

(linear means a chart with a linear straight slope increasing
gradually as it is plotted from present to past distances)

No, "linear" does not mean slope is "increasing gradually".
"Linear" means slope is constant.

Correct....what I ment was as opposed to a straight horizontal line on
the chart.

If that original chart was modified:

1. What would a decelerating chart of the expansion rate look like?

Do you mean what would the curve look like if expansion
rate (slope) were higher for older, more distant
observations? It would curve upward, having higher
slope at the larger distances.

ok



2. What if the past distance is curved above the linear and the
present distance is curved below the linear?

Depends on the shape you mean. Easier to describe in
terms of slope. I could imagine a curve matching your
description in which slope smallest in the middle,
and larger at both ends.

3. What if both past and present are curved above the linear?

4. What if past is curved below and present curved above?

All your questions are better asked in terms of slope.
As it is, I don't know exactly what you have in
mind. But the answers will all be based on this:
Large slope = large expansion rate, small slope =
small expansion rate.

ok but if both large and small slope represent an expansion

They do. You haven't read what I said?

Large slope = large expansion rate.
Small slope = small expansion rate.

I just said that. Look up two lines. Both are
expansions.


so then
what kind of slope would reprent a contraction instead of expansion?

A negative slope in redshift would indicate objects that
are getting farther from us, but closer to each other.

If they were getting closer to us, then there would be
a blueshift.

- Randy

On Jul 8, 4:05 pm, Randy Poe wrote:
On Jul 6, 2:53 pm, " wrote:





On Jul 6, 11:15 am, Randy Poe wrote:

On Jul 6, 3:13 am, " wrote:

On Jul 5, 4:43 pm, Randy Poe wrote:

On Jul 4, 6:41 am, " wrote:

It is confusing and error prone

What is? Did you mean to have a link in your post?

- Randy

The very same link that you gave about redshift versus distance.

I guess you mean this one:

http://www.astro.ucla.edu/~wright/sne_cosmology.html

yes

It was irritating to make me dig for it. So I don't start
this post in a good mood.

Sorry, thought you knew it off hand cause it's the only one you gave
me about redshift I think?

I was
wondering if that chart was modified in the following way below what
it would mean:

(linear means a chart with a linear straight slope increasing
gradually as it is plotted from present to past distances)

No, "linear" does not mean slope is "increasing gradually".
"Linear" means slope is constant.

Correct....what I ment was as opposed to a straight horizontal line on
the chart.

If that original chart was modified:

1. What would a decelerating chart of the expansion rate look like?

Do you mean what would the curve look like if expansion
rate (slope) were higher for older, more distant
observations? It would curve upward, having higher
slope at the larger distances.

ok

2. What if the past distance is curved above the linear and the
present distance is curved below the linear?

Depends on the shape you mean. Easier to describe in
terms of slope. I could imagine a curve matching your
description in which slope smallest in the middle,
and larger at both ends.

3. What if both past and present are curved above the linear?

4. What if past is curved below and present curved above?

All your questions are better asked in terms of slope.
As it is, I don't know exactly what you have in
mind. But the answers will all be based on this:
Large slope = large expansion rate, small slope =
small expansion rate.

ok but if both large and small slope represent an expansion

They do. You haven't read what I said?

Large slope = large expansion rate.
Small slope = small expansion rate.

I just said that. Look up two lines. Both are
expansions.

so then
what kind of slope would reprent a contraction instead of expansion?

A negative slope in redshift would indicate objects that
are getting farther from us, but closer to each other.


Oh my mistake I thought the slope was dipping down towards the end
where as it's only bending less.




If they were getting closer to us, then there would be
a blueshift.

- Randy- Hide quoted text -

- Show quoted text -