A Space & astronomy forum. SpaceBanter.com

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics » Astronomy Misc
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

THEORICAL-PRACTICAL huge QUESTION



 
 
Thread Tools Display Modes
  #1  
Old March 21st 17, 10:08 AM posted to sci.astro
[email protected]
external usenet poster
 
Posts: 73
Default THEORICAL-PRACTICAL huge QUESTION

...the theorical acceleration is the change of speed and this measure is given in the SI ( international with m/s^2 ... or m/s/s
... the anomal misterious acceleration of Pioneer 10-11 is given with 8.7*10^-8 cm/s^2
... the acceleration of the BigBang ( Hubble Constant ) is given with 67 Km/s /Mpc or 20 Km/s/My.l. ...
NB.: why the change of speed in BB has the Mpc , that is not a time quantity the distance made by the light in 3.2 Millions years ?
PS.: the anomal acceleration of Pioneers and the BB' acceleration are , in absoute value , very similar ?
  #2  
Old March 21st 17, 03:46 PM posted to sci.astro
dlzc
external usenet poster
 
Posts: 1,426
Default THEORICAL-PRACTICAL huge QUESTION

Dear old...:

On Tuesday, March 21, 2017 at 2:08:19 AM UTC-7, wrote:
..the theorical acceleration is the change of speed
and this measure is given in the SI ( international
with m/s^2 ... or m/s/s


Sure. Units, ignoring the vector component.

.. the anomal misterious acceleration of Pioneer
10-11 is given with 8.7*10^-8 cm/s^2


Yes, "vector component" is "Sunward", or anti-Universal-expansion, since the Earth is also "Sunward".

.. the acceleration of the BigBang ( Hubble Constant)
is given with 67 Km/s /Mpc or 20 Km/s/My.l. ...


Also 1 part in 10^18, with each passing second... either distance increase, or duration decrease (each second is missing 1 part, then 2 parts, then 3 parts, then...).

NB.: why the change of speed in BB has the Mpc,
that is not a time quantity the distance made by
the light in 3.2 Millions years ?


Because the "Hubble constant" is a velocity, and does not address the acceleration that began 1.1 billion years ago.

PS.: the anomal acceleration of Pioneers and the
BB' acceleration are , in absoute value , very
similar ?


Ignoring the sign / vector, and ignoring one is an acceleration and the other a speed, not really.

So is the lunar recession rate (which at least has the correct sign and units), but it is about double the magnitude of expansion, and is ENTIRELY due to momentum transfer from Earth.

Expansion is not detectable within bound systems, the largest bound system being (for us) the Virgo Supercluster.

http://www.astro.ucla.edu/~wright/cosmology_faq.html#SS

David A. Smith
  #3  
Old March 22nd 17, 10:18 AM posted to sci.astro
[email protected]
external usenet poster
 
Posts: 73
Default THEORICAL-PRACTICAL huge QUESTION

Il giorno martedì 21 marzo 2017 15:46:10 UTC+1, dlzc ha scritto:
Dear old...:

On Tuesday, March 21, 2017 at 2:08:19 AM UTC-7, wrote:
..the theorical acceleration is the change of speed
and this measure is given in the SI ( international
with m/s^2 ... or m/s/s


Sure. Units, ignoring the vector component.

.. the anomal misterious acceleration of Pioneer
10-11 is given with 8.7*10^-8 cm/s^2


Yes, "vector component" is "Sunward", or anti-Universal-expansion, since the Earth is also "Sunward".

.. the acceleration of the BigBang ( Hubble Constant)
is given with 67 Km/s /Mpc or 20 Km/s/My.l. ...


Also 1 part in 10^18, with each passing second... either distance increase, or duration decrease (each second is missing 1 part, then 2 parts, then 3 parts, then...).

NB.: why the change of speed in BB has the Mpc,
that is not a time quantity the distance made by
the light in 3.2 Millions years ?


Because the "Hubble constant" is a velocity, and does not address the acceleration that began 1.1 billion years ago.

PS.: the anomal acceleration of Pioneers and the
BB' acceleration are , in absoute value , very
similar ?


Ignoring the sign / vector, and ignoring one is an acceleration and the other a speed, not really.

So is the lunar recession rate (which at least has the correct sign and units), but it is about double the magnitude of expansion, and is ENTIRELY due to momentum transfer from Earth.

Expansion is not detectable within bound systems, the largest bound system being (for us) the Virgo Supercluster.

http://www.astro.ucla.edu/~wright/cosmology_faq.html#SS

David A. Smith


...thanks for your specifications ...so i modify ,a little , the second part of premises .. : supposed that the evidence of the increasing speed (connected to the increasing universal distances ) could come from a kind of acceleration ... Has that acceleration the same absolute value of the misterious (?) acceleration of Pioneer 10-11 ?
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
black man with huge dicks,blow huge dick,deep throating huge dicks [email protected] Amateur Astronomy 0 March 13th 08 07:44 PM
huge latin dicks,cum shot huge dick,how to make my dick huge [email protected] Amateur Astronomy 0 March 13th 08 07:41 PM
huge cock big dicks,riding huge dick,free huge dick video [email protected] Amateur Astronomy 0 March 13th 08 07:40 PM
huge tit movie,huge tit cum,huge anime tit [email protected] Amateur Astronomy 0 March 13th 08 09:58 AM
Serious question from a skeptic - practical realities of taking clearvideo/stills of UFO's? Doc[_2_] Astronomy Misc 44 February 26th 08 08:49 PM


All times are GMT +1. The time now is 05:48 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 SpaceBanter.com.
The comments are property of their posters.