Re: Anyone know how Hubble could be very wrong?
- From: "guskz@xxxxxxxxxxx" <guskz@xxxxxxxxxxx>
- Date: Tue, 03 Jul 2007 04:39:35 -0700
On Jul 2, 3:52 pm, PD <TheDraperFam...@xxxxxxxxx> wrote:
On Jul 2, 2:13 pm, "g...@xxxxxxxxxxx" <g...@xxxxxxxxxxx> wrote:Say the light is leaving a train(instead of a star), the more redshift
On Jul 2, 1:00 pm, Randy Poe <poespam-t...@xxxxxxxxx> wrote:
On Jul 2, 9:23 am, "g...@xxxxxxxxxxx" <g...@xxxxxxxxxxx> wrote:
If we skip progressive observation, Hubble ***AT LEAST*** could
identify between very close and very far objects....NO???
You have very badly misinterpreted an article you have
read (big surprise: all of your posts are the result
of very serious misinterpretations).
In this case, the observation in 1998, since confirmed,
is that the straight-line relationship of Hubble doesn't
hold out to the most extreme objects. The slope at which
redshift increases with distance seems to be less out
at the extreme distances.
You have somehow garbled "the slope is less for these
objects than for closer objects" to be "the RED-SHIFT
is less for these objects than for closer objects".
And the very far objects are more redshifted??
Yes, very much so.
Yet this disagrees with the 1998 observation that farther Supernova's
are less redshifted?
No. Farther supernovas are more redshifted.
Here's some more recent data:
http://www.astro.ucla.edu/~wright/sne_cosmology.html
Notice on the first chart that the data points
still show a general increase in speed (y-axis)
with distance (x-axis), and therefore an increase in
red-shift with distance.
- Randy
http://www.msnbc.msn.com/id/3077857
Quote:"The universe is not only expanding, but that expansion appears
to be speeding up."
The above statement is impossible unless the close objects are also
more redshifted (not only the in between objects)?
No, that is incorrect.
Find a plot of y=x and a plot of y=1-exp(-x).
You will find that at large values of x, the slope of the latter is
less than the slope of the former, but it is STILL true that both are
monotonically increasing functions and that y is still smaller for
smaller values of x for both functions.
A slight downturn of the Hubble curve at high values of z in no way
indicates that the redshift is higher for nearer objects than it is
for farther objects.
the faster the train WITH RESPECT TO YOU (to your observation).
According to the 1998 report on supernova stars, Train at 12 GPC (12
billion years ago) has LESS redshift then say 6GPC therefore the 6GPC
train is moving **faster** than 12GPC train....correct?
Then Randy said closer objects (1GPC) observed in 1998 are consitant
with Hubble's (the person) observation thus they both have the same
redshift ,thus to remain consistant: 1GPC train has less redshift than
both 12GPC and 6GPC trains....correct?
For the 1GPC to have less redshift it needs to be moving less faster
than both 12GPC and 6GPC trains and thus this train's speed has
decelerated (not accelerated) from the two other train speeds in the
past?.....correct?
Space expanding as light travels through it should not affect the
redshifting, only the speed of the object(at the time of light's
departure) relative to our present speed should affect the
redshifting?
(Same as a train's sound at 200 versus 2000 feet from you the doppler
pitch will be the same the only difference is that the sound volume
will be different.)- Hide quoted text -
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